Insomnia
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C1 noun /ɪnˈsɒm.ni.ə/

Insomnia

Insomnie
Meaning
habitual sleeplessness; inability to sleep; the condition of being unable to sleep
Example
Her chronic insomnia made it difficult for her to concentrate during work hours.
Ihre chronische Insomnie erschwerte es ihr, sich während der Arbeitszeit zu konzentrieren.
C1 noun /ˌɪnsəˈfɪʃənsi/

insufficiency

Unzulänglichkeit
Meaning
The state of not being enough or not being adequate.
Example
The project failed due to the insufficiency of funds.
Das Projekt scheiterte aufgrund der Unzulänglichkeit von Mitteln.
C1 adjective /ˈɪmpətənt/

impotent

machtlos
Meaning
Lacking power, ability, or strength to take effective action.
Example
The citizens felt impotent against the corrupt system.
Die Bürger fühlten sich machtlos gegen das korrupte System.
C1 adjective /ɪmˈpɛndɪŋ/

impending

bevorstehend
Meaning
about to happen soon, usually something unpleasant or threatening
Example
The villagers were worried about the impending flood.
Die Dorfbewohner waren besorgt über die bevorstehende Flut.
C1 noun /ɪmˈpjʊərəti/

impurity

Unreinheit
Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
Der Wissenschaftler entfernte jede Unreinheit aus der Wasserprobe.
C1 noun ˈɪm.pɪ.təs

impetus

Antrieb
Meaning
The force or motivation that drives something forward; momentum.
Example
The new policy provided an impetus for economic growth.
Die neue Politik gab einen Antrieb für das wirtschaftliche Wachstum.
C1 verb /ˈɪnfɪltreɪt/

infiltrate

infiltrieren
Meaning
to secretly enter or gain access to a place or group
Example
The spies managed to infiltrate the enemy base.
Die Spione schafften es, die feindliche Basis zu infiltrieren.
C1 adjective /ˌɪnkənˈsiːvəbl̩/

inconceivable

unvorstellbar
Meaning
Impossible to imagine or believe; beyond comprehension.
Example
It seemed inconceivable that she could finish the marathon after such little training.
Es schien unvorstellbar, dass sie den Marathon nach so wenig Training beenden könnte.
C1 adjective /ɪˈrɛvərənt/

irreverent

respektlos
Meaning
showing a lack of respect for people or things that are usually respected
Example
The comedian’s irreverent jokes offended some of the audience.
Die respektlosen Witze des Komikers haben einige Zuschauer beleidigt.
C1 adjective /ɪˈrɛvəkəbl/

irrevocable

unwiderruflich
Meaning
Not able to be revoked, changed, or undone.
Example
She made an irrevocable decision to leave the company.
Sie traf eine unwiderrufliche Entscheidung, das Unternehmen zu verlassen.
C1 verb /ɪnˈfɛst/

infest

befallen
Meaning
to overrun in large numbers, especially so as to cause damage or discomfort
Example
The old house was infested with rats.
Das alte Haus war von Ratten befallen.
C1 verb /ɪmˈbɛd/

imbed

einbetten
Meaning
To fix firmly or deeply in a surrounding mass.
Example
The journalist imbedded himself with the troops to report firsthand.
Der Journalist hat sich mit den Truppen eingebettet, um aus erster Hand zu berichten.
C1 adjective /ˈɪnsjələr/

insular

engstirnig, inselbezogen
Meaning
Narrow-minded, isolated, or relating to an island.
Example
The community was criticized for its insular attitudes toward outsiders.
Die Gemeinschaft wurde für ihre insularen Einstellungen gegenüber Außenseitern kritisiert.
C1 verb ɪˈnɔː.ɡjə.reɪ.tɪd

inaugurated

eingeweiht
Meaning
Begin or introduce (a system, policy, or period) formally.
Example
The organization was inaugurated officially.
Die Organisation wurde offiziell eingeweiht.
C1 noun /ˈɪrɪtənt/

irritant

reizstoff
Meaning
something that causes irritation or discomfort
Example
Dust is a common irritant for people with allergies.
Staub ist ein häufiger Reizstoff für Menschen mit Allergien.
C1 noun /ˌɪnkəmˈpliːtnəs/

incompleteness

Unvollständigkeit
Meaning
the state of not being complete or whole; lack of necessary parts or fullness
Example
The incompleteness of the report caused delays in the project.
Die Unvollständigkeit des Berichts verursachte Verzögerungen im Projekt.
C1 noun /ˌɪn.trəˈvɜːr.ʒən/

introversion

Introversion
Meaning
The tendency to be inward-looking and shy, preferring solitary activities.
Example
Her introversion made it difficult for her to enjoy large parties.
Ihre Introversion machte es ihr schwer, große Partys zu genießen.
C1 noun ˌɪn.toʊˈneɪ.ʃən

intonation

Intonation
Meaning
The rise and fall of tone in speech and pronunciation.
Example
Proper intonation enhances the clarity of a speech.
Die richtige Intonation verbessert die Klarheit einer Rede.
C1 adjective /ˌɪnkəmˈpætəbl/

incompatible

unvereinbar
Meaning
Not able to exist or work together without conflict.
Example
Their personalities were completely incompatible.
Ihre Persönlichkeiten waren völlig unvereinbar.
C1 verb /ˈɪnstɪˌɡeɪt/

instigate

anstiften
Meaning
To bring about or initiate an action, often something negative.
Example
He was accused of instigating the riot.
Er wurde beschuldigt, den Aufstand anzustiften.
C1 adjective /ɪˈlɪsɪt/

illicit

illegal
Meaning
Forbidden by law, rules, or custom.
Example
The police shut down the illicit drug operation.
Die Polizei hat den illegalen Drogenhandel gestoppt.
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

sofortig
Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
Die Temperaturänderung war fast sofortig.
C1 noun/verb /ˈɪmprɪnt/

imprint

Prägung
Meaning
A mark or impression made by pressure; to establish or fix firmly in someone's mind.
Example
The event left an indelible imprint on the city's history.
Das Ereignis hinterließ eine unauslöschliche Prägung in der Geschichte der Stadt.
C1 adverb /ˌɪn.ədˈvɜːr.tənt.li/

Inadvertently

unbeabsichtigt; versehentlich; aus Versehen
Meaning
without being aware of what you are doing; unintentionally; by mistake
Example
She inadvertently deleted the important file while cleaning her computer.
Sie hat versehentlich die wichtige Datei gelöscht, während sie ihren Computer gereinigt hat.
C1 adjective /ɪˈnɒkjuəs/

innocuous

harmlos
Meaning
Not harmful or offensive.
Example
His remark was completely innocuous and not meant to offend anyone.
Seine Bemerkung war völlig harmlos und nicht dazu gedacht, jemanden zu beleidigen.
C1 adjective /ɪnˈsteɪbəl/

instable

instabil
Meaning
not stable; liable to change, collapse, or fail; lacking firmness or reliability
Example
The instable political situation worried foreign investors.
Die instabile politische Lage beunruhigte ausländische Investoren.
C1 adjective /ɪmˈpæʃənd/

impassioned

leidenschaftlich
Meaning
Filled with or showing great emotion.
Example
She gave an impassioned speech about human rights.
Sie hielt eine leidenschaftliche Rede über Menschenrechte.
C1 verb /ɪmˈpɛl/

impel

bewegen
Meaning
to drive, force, or urge someone to do something
Example
Her curiosity impelled her to open the mysterious box.
Ihre Neugier trieb sie dazu, die mysteriöse Kiste zu öffnen.
C1 verb /ɪnˈfleɪt/

inflate

aufblasen; künstlich erhöhen
Meaning
to fill with air or gas so it expands; to increase excessively or artificially
Example
The mechanic inflated the tire to the correct pressure.
Der Mechaniker blies den Reifen auf den richtigen Druck auf.
C1 noun /ˈɪnstɪˌɡeɪtər/

instigator

Anstifter
Meaning
A person who brings about or initiates something, usually something bad.
Example
The police identified him as the instigator of the violence.
Die Polizei identifizierte ihn als den Anstifter der Gewalt.
C1 noun /ˌɪn.dɪˈsɪʒ.ən/

Indecision

Unentschlossenheit; Zweifel; Zögern
Meaning
the inability to make decisions quickly; uncertainty about what to do
Example
Her indecision about which job offer to accept caused her to miss both opportunities.
Ihre Unentschlossenheit, welches Jobangebot sie annehmen sollte, führte dazu, dass sie beide Gelegenheiten verpasste.
C1 adjective /ˈɪntrɪkət/

intricate

komplex
Meaning
very detailed, complex, and difficult to understand
Example
The artist created an intricate pattern on the wall.
Der Künstler hat ein komplexes Muster an die Wand gemalt.
C1 adjective ɪnˈdel.ə.bəl

indelible

unvergesslich
Meaning
Making marks that cannot be removed; impossible to forget or remove.
Example
Her speech left an indelible mark on the audience.
Ihre Rede hinterließ einen unvergesslichen Eindruck beim Publikum.
C1 verb /ˈaɪdəlaɪz/

idolize

verehren
Meaning
To admire or worship someone excessively.
Example
Fans often idolize celebrities for their talent and lifestyle.
Fans verehren oft Prominente für ihr Talent und ihren Lebensstil.
C1 adjective ˈɪn.tər.ɪm

interim

interimistisch
Meaning
In or for the intervening period; provisional or temporary.
Example
Interim governments manage transitional phases.
Interim-Regierungen verwalten Übergangsphasen.
C1 noun /ɪnˈtruː.ʒən/

intrusion

unbefugtes Eindringen
Meaning
Unauthorized entry into a system or place without permission
Example
The company detected an intrusion in its server.
Das Unternehmen hat eine Intrusion in seinem Server erkannt.
C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

instinktiv, natürlich, automatisch
Meaning
Based on instinct; done without conscious thought; natural and automatic.
Example
His instinctive reaction saved his life.
Seine instinktive Reaktion rettete sein Leben.
C1 adjective /ˌɪndɪˈsaɪsɪv/

Indecisive

unentschlossen
Meaning
unable to make decisions quickly; hesitant; wavering
Example
She was indecisive about which university to attend.
Sie war unentschlossen, welche Universität sie besuchen sollte.
C1 noun ˌɪntədɪˈpɛndənsi

interdependency

Interdependenz
Meaning
The dependence of two or more people or things on each other.
Example
The interdependency of the countries led to greater cooperation.
Die Interdependenz der Länder führte zu mehr Zusammenarbeit.
C1 adjective /ɪˈrɛpərəbəl/

Irreparable

irreparabel
Meaning
impossible to repair or fix; permanent damage that cannot be undone
Example
The accident caused irreparable damage to his spine.
Der Unfall verursachte irreparable Schäden an seiner Wirbelsäule.
C1 adjective /ɪnˈtjuː.ɪ.tɪv/

intuitive

intuitiv
Meaning
Based on instinctive understanding rather than reasoning.
Example
The software has an intuitive design that makes it easy to use.
Die Software hat ein intuitives Design, das die Nutzung einfach macht.
C1 adjective /ɪnˈdiːsənt/

indecent

unanständig
Meaning
not conforming to accepted standards of behavior or morality; improper or offensive
Example
He was warned for making an indecent remark during the meeting.
Er wurde wegen einer unanständigen Bemerkung verwarnt.
C1 adjective, noun /ˈɪnvəlɪd/ (adjective), /ɪnˈvælɪd/ (noun)

invalid

ungültig
Meaning
Not valid; having no force or effect. Also refers to a person too weak or ill to care for themselves.
Example
The court declared the contract invalid.
Das Gericht erklärte den Vertrag für ungültig.
C1 adjective /ˌɪndɪˈvɪzəbl/

indivisible

unteilbar
Meaning
Not able to be divided or separated.
Example
The country's unity was indivisible despite differences.
Die Einheit des Landes war trotz der Unterschiede unteilbar.
C1 adjective /ˌɪlɪˈdʒɪtɪmət/

illegitimate

illegitim
Meaning
Not authorized by law, rules, or standards; not recognized as valid.
Example
The court ruled the contract to be illegitimate.
Das Gericht entschied, dass der Vertrag illegitim war.
C1 verb /ɪnˈklaɪn/

incline

neigen
Meaning
to feel willing or favorably disposed toward something; to bend or tilt
Example
She is inclined to agree with the proposal.
Sie ist geneigt, dem Vorschlag zuzustimmen.
C1 noun /aɪˈdiː.ə.lɪ.zəm/

Idealism

Idealismus
Meaning
the pursuit of high principles and noble goals; unrealistic pursuit of perfection
Example
His youthful idealism motivated him to join various social justice movements.
Sein jugendlicher Idealismus motivierte ihn, sich verschiedenen sozialen Gerechtigkeitsbewegungen anzuschließen.
C1 verb /ɪˈmɔːrtəlaɪz/

immortalize

verewigen
Meaning
to preserve the memory of someone or something forever
Example
The statue was built to immortalize the hero’s sacrifice.
Die Statue wurde gebaut, um das Opfer des Helden zu verewigen.
C1 verb /ɪnˈsɪnjueɪt/

insinuate

insinuieren
Meaning
To suggest or hint something indirectly and often unpleasantly.
Example
He insinuated that she had lied about her qualifications.
Er insinuierte, dass sie über ihre Qualifikationen gelogen hatte.
C1 adjective /ɪˈrɛfjʊtəbəl/

Irrefutable

unwiderlegbar
Meaning
impossible to deny or disprove; undeniable
Example
The evidence against him was irrefutable.
Der Beweis gegen ihn war unwiderlegbar.
C1 noun /ɪnˌkɑːsəˈreɪʃən/

incarceration

Inhaftierung
Meaning
the state of being imprisoned or confined
Example
The criminal faced years of incarceration for his crimes.
Der Kriminelle verbrachte Jahre der Inhaftierung für seine Verbrechen.
C1 adjective /ˈɪmpjəd(ə)nt/

impudent

frech, unverschämt
Meaning
not showing due respect for another person; rude
Example
The impudent child talked back to the teacher.
Das freche Kind antwortete dem Lehrer.
C1 verb /ˈɪnsjuleɪt/

insulate

isolieren
Meaning
To protect something by covering it, especially to prevent heat, sound, or electricity from escaping or entering.
Example
The house was insulated to reduce heating costs.
Das Haus wurde isoliert, um die Heizkosten zu senken.
C1 verb /ɪmˈpɛrɪl/

imperil

in Gefahr bringen
Meaning
To put in danger or at risk.
Example
Reckless driving can imperil the lives of others.
Rücksichtsloses Fahren kann das Leben anderer gefährden.
C1 noun /ɪnˈfjuːʒən/

infusion

Infusion
Meaning
the act of introducing something into another; a drink made by steeping leaves or herbs in liquid
Example
She prepared a calming infusion of chamomile tea.
Sie bereitete eine beruhigende Infusion aus Kamillentee zu.
C1 noun ˌɪrɪˈvɜːrsəbl ˈdæmɪdʒ

irreversible damage

unwiederbringlicher Schaden
Meaning
Harm or injury that cannot be undone or repaired.
Example
Climate change causes irreversible damage to ecosystems.
Der Klimawandel verursacht unwiederbringlichen Schaden an Ökosystemen.
C1 verb /ɪnˈdʌkt/

induct

jemanden formell in eine Position, Organisation oder ein Amt aufnehmen
Meaning
to formally admit someone into a position, organization, or office
Example
She was inducted into the university's honor society.
Sie wurde in die Ehrenvereinigung der Universität aufgenommen.
C1 noun ˌɪnfɛsˈteɪʃən

infestation

befall, das Vorhandensein einer ungewöhnlich großen Anzahl von Insekten oder Tieren an einem Ort
Meaning
The presence of an unusually large number of insects or animals in a place, causing damage or disease.
Example
The infestation of ants in the kitchen led to immediate pest control measures.
Die Insektenplage in der Küche führte zu sofortigen Maßnahmen zur Schädlingsbekämpfung.
C1 adjective /ɪnˈtrɛpɪd/

intrepid

unerschrocken
Meaning
fearless and adventurous, often used humorously
Example
The intrepid traveler explored the jungle alone.
Der unerschrockene Reisende erkundete den Dschungel alleine.
C1 adjective /ɪnˈdetɪd/

Indebted

verschuldet; dankbar
Meaning
owing money or gratitude to someone; obligated; grateful
Example
I am deeply indebted to my teacher for all her guidance.
Ich bin meiner Lehrerin tief verbunden für ihre ganze Führung.
C1 noun /ˌɪntərˈmiːdiˌɛri/

intermediary

Vermittler
Meaning
A person who acts as a link between people in order to try to bring about an agreement; a mediator.
Example
The diplomat served as an intermediary between the two conflicting nations.
Der Diplomat fungierte als Vermittler zwischen den beiden konfliktierenden Nationen.
C1 noun /ˈɪntərˌluːd/

interlude

Zwischenakt
Meaning
A short period of time that comes between two events; an interval.
Example
There was a brief musical interlude between the two acts of the play.
Es gab ein kurzes musikalisches Intermezzo zwischen den beiden Akten des Stücks.
C1 noun /ˌɪntərˈmɪʃən/

intermission

Pause
Meaning
A pause or break, especially during a performance or event.
Example
The play had a twenty-minute intermission.
Das Stück hatte eine zwanzigminütige Pause.
C1 verb /ɪˈnɔːɡjʊreɪt/

inaugurate

einweihen
Meaning
To formally begin or introduce something, especially with a ceremony.
Example
The mayor will inaugurate the new bridge tomorrow.
Der Bürgermeister wird morgen die neue Brücke einweihen.
C1 noun ˌɪnˈsaɪtfʊlnɪs

insightfulness

Einsicht, Analysefähigkeit
Meaning
The capacity to gain an accurate and deep intuitive understanding of a person or thing.
Example
His insightfulness helped solve the complex problem.
Seine Einsicht half, das komplexe Problem zu lösen.
C1 verb /ɪmˈpɒvərɪʃ/

impoverish

verarmen
Meaning
To make someone poor or reduce the quality or richness of something.
Example
The long war impoverished the entire nation.
Der lange Krieg hat die ganze Nation verarmt.
C1 noun ɪnˈflɛk.ʃən

inflection

Intonation
Meaning
The change in pitch or tone of voice when speaking for emphasis.
Example
His inflection kept the audience engaged.
Seine Intonation hielt das Publikum gebannt.
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

Brutschrank
Meaning
a device or environment that provides suitable conditions for eggs, cells, or infants to develop
Example
The premature baby was placed in an incubator for care.
Das frühgeborene Baby wurde zur Pflege in einen Brutkasten gelegt.
C1 noun /ɪˈrɛlɪvənsi/

irrelevancy

Irrelevanz
Meaning
the state of being unrelated or unimportant to the matter at hand
Example
The judge dismissed the argument because of its irrelevancy to the case.
Der Richter wies das Argument wegen seiner Irrelevanz für den Fall zurück.
C1 adjective /ɪnˈstrʌktɪv/

instructive

instruktiv
Meaning
useful and informative; providing knowledge or instruction
Example
The lecture was highly instructive and engaging.
Der Vortrag war sehr lehrreich und fesselnd.
C1 adjective /ˌɪndɪˈskraɪbəbəl/

Indescribable

unbeschreiblich
Meaning
impossible to describe or express in words; beyond description
Example
The beauty of the sunset was indescribable.
Die Schönheit des Sonnenuntergangs war unbeschreiblich.
C1 noun /ˌɪnkwɪˈzɪʃən/

inquisition

Inquisition
Meaning
A prolonged and intense questioning or investigation, often harsh in nature.
Example
The journalist faced an inquisition from the panel about his sources.
Der Journalist wurde einem harten Verhör durch das Panel über seine Quellen unterzogen.
C1 noun /ˈɪnsɪdəns/

incidence

inzidenz
Meaning
the occurrence, rate, or frequency of something
Example
The incidence of road accidents has decreased this year.
Die Inzidenz von Straßenunfällen ist in diesem Jahr gesenkt worden.
C1 adjective /ɪmˈprɒmp.tjuː/

impromptu

spontan
Meaning
Done without being planned, organized, or rehearsed; spontaneous.
Example
He gave an impromptu speech at the event.
Er hielt eine spontane Rede bei der Veranstaltung.
C1 noun /ˌɪm.pəˈzɪʃ.ən/

Imposition

Auferlegung; Last; ungerechte Forderung
Meaning
the action or process of imposing something or of being imposed; an unfair burden or demand
Example
The imposition of new taxes without consultation angered the citizens greatly.
Die Auferlegung neuer Steuern ohne Beratung verärgerte die Bürger erheblich.
C1 adjective /ɪnˈveɪsɪv/

invasive

invasiv
Meaning
Tending to spread harmfully, intruding aggressively, or encroaching beyond proper boundaries.
Example
The doctor explained that the procedure was minimally invasive.
Der Arzt erklärte, dass das Verfahren minimal invasiv war.
C1 adjective /ˈɪrɪtəbl/

irritable

reizbar
Meaning
easily annoyed or made angry
Example
She became irritable after working long hours without rest.
Sie wurde reizbar, nachdem sie lange Stunden ohne Ruhe gearbeitet hatte.
C1 noun ˈɪn.fər.əns

inference

Schlussfolgerung
Meaning
A conclusion reached on the basis of evidence and reasoning; logical deduction.
Example
Scientists make inferences based on experimental data.
Wissenschaftler ziehen Schlussfolgerungen basierend auf experimentellen Daten.
C1 adjective /ɪnˈvɪnsəbl/

invincible

unbesiegbar
Meaning
too powerful to be defeated or overcome
Example
The team seemed invincible after winning ten matches in a row.
Das Team schien unbesiegbar, nachdem es zehn Spiele hintereinander gewonnen hatte.
C1 adjective ˌɪn.tə.dʒen.əˈreɪ.ʃən.əl

intergenerational

intergenerationell, zwischen verschiedenen Generationen einer Familie
Meaning
Existing or occurring between different generations of a family.
Example
Intergenerational wisdom ensures cultural continuity.
Intergenerationelles Wissen sichert kulturelle Kontinuität.
C1 adjective ˌɪn.təˈstel.ər

interstellar

zwischen den Sternen, interstellar, kosmisch
Meaning
Occurring or situated between stars.
Example
Scientists study interstellar travel possibilities.
Wissenschaftler untersuchen die Möglichkeiten der interstellaren Reisen.
C1 verb /ɪˈluːmɪneɪt/

illuminate

beleuchten
Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
Straßenlaternen beleuchten die Straße in der Nacht.
C1 adjective /ɪnˈkwɪzɪtɪv/

inquisitive

neugierig
Meaning
Curious or eager to learn and ask questions.
Example
The inquisitive child asked endless questions about the stars.
Das neugierige Kind stellte unzählige Fragen über die Sterne.
C1 noun /ɪˈmiːdiəsi/

immediacy

Unmittelbarkeit, Dringlichkeit
Meaning
The quality of bringing one into direct and instant involvement with something, giving rise to a sense of urgency or excitement.
Example
The immediacy of digital communication has reshaped business operations.
Die Unmittelbarkeit der digitalen Kommunikation hat die Geschäftsabläufe verändert.
C1 adjective /ˌɪnɪkˈskjuːzəbl/

inexcusable

unentschuldbar
Meaning
Too bad to be justified or overlooked; unforgivable.
Example
His rude behavior was inexcusable.
Sein unhöfliches Verhalten war unentschuldbar.
C1 adjective /ɪnˈhɪbɪtɪd/

inhibited

gehemmt
Meaning
Unable to act in a relaxed and natural way, especially due to self-consciousness or restraint.
Example
He was too inhibited to express his true feelings.
Er war zu gehemmt, um seine wahren Gefühle auszudrücken.
C1 verb /ɪnˈtɒksɪkeɪt/

intoxicate

Glück
Meaning
to make someone lose control of their faculties or behavior due to alcohol or drugs
Example
The strong drink quickly intoxicated him.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
C1 adjective /ˌɪnkɒmprɪˈhɛnsəbl/

incomprehensible

unverständlich
Meaning
Impossible or very difficult to understand.
Example
The professor’s lecture was so fast it became incomprehensible.
Die Vorlesung des Professors war so schnell, dass sie unverständlich wurde.
C1 noun /ɪnˈdɪɡ.nə.ti/

Indignity

Indignität; Demütigung; Erniedrigung;
Meaning
treatment or circumstances that cause one to feel shame or loss of dignity; humiliation
Example
She refused to suffer the indignity of being searched without proper cause.
Sie weigerte sich, die Indignität zu ertragen, ohne einen triftigen Grund durchsucht zu werden.
C1 adjective /ˌɪntərˈtwaɪnd/

intertwined

Glück
Meaning
closely connected or twisted together
Example
Their lives became deeply intertwined after the accident.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
C1 noun /ɪnˈhɛrɪtər/

inheritor

Erbe
Meaning
a person who receives money, property, or a title when someone dies
Example
She became the inheritor of her family's estate.
Sie wurde die Erbin des Familienvermögens.
C1 adjective /ɪˈmuː.və.bəl/

immovable

unbeweglich
Meaning
Not able to be moved; fixed in position.
Example
Immovable barriers prevent change.
Unbewegliche Barrieren verhindern Veränderungen.
C1 adjective /ɪnˈtændʒəbl/

intangible

immateriell
Meaning
Unable to be touched or grasped; not having a physical presence.
Example
Trust is an intangible quality in relationships.
Vertrauen ist eine immaterielle Eigenschaft in Beziehungen.
C1 verb /ɪnˈvælɪdeɪt/

invalidate

ungültig machen
Meaning
To make something not valid or legally acceptable.
Example
The new evidence may invalidate the previous ruling.
Die neuen Beweise könnten das vorherige Urteil ungültig machen.
C1 adjective /ˌɪrɪˈvɜːrsəbl/

irreversible

irreversibel
Meaning
Not able to be undone, changed, or reversed.
Example
The damage caused by the fire was irreversible.
Der durch das Feuer verursachte Schaden war irreversibel.
C1 noun /ɪnˈædɪkwəsi/

inadequacy

Unzulänglichkeit
Meaning
lack of sufficient ability, quality, or strength; a feeling of not being good enough
Example
She struggled with feelings of inadequacy at work despite her strong qualifications.
Trotz ihrer starken Qualifikationen kämpfte sie bei der Arbeit mit Gefühlen der Unzulänglichkeit.
C1 noun /ˈɪm.pæs/

impasse

Stillstand
Meaning
A situation where no progress is possible.
Example
The negotiations reached an impasse, delaying the agreement.
Die Verhandlungen erreichten einen Stillstand, der die Vereinbarung verzögerte.
C1 adjective /ˈɪɡ.ni.əs/

igneous

magmatisch
Meaning
Formed through the cooling and solidification of magma or lava.
Example
Granite is an igneous rock commonly used in construction.
Granit ist ein magmatisches Gestein, das häufig im Bauwesen verwendet wird.
C1 noun /ˌaɪ.diˈɒl.ə.dʒi/

ideology

Ideologie
Meaning
A system of ideas and ideals, especially one that forms the basis of economic or political theory and policy.
Example
Democracy is based on the ideology of freedom and equality.
Demokratie basiert auf der Ideologie von Freiheit und Gleichheit.
C1 verb /ɪnˈsaɪt/

incite

anstacheln
Meaning
to provoke; to stir up
Example
His speech incited the crowd to violence.
Seine Rede hat die Menge zu Gewalt angestachelt.
C1 adjective /ˌɪndɪˈfɛnsəbl̩/

indefensible

unverteidbar
Meaning
not able to be protected or justified
Example
The minister’s remarks were considered indefensible by the public.
Die Bemerkungen des Ministers wurden von der Öffentlichkeit als unverteidbar angesehen.
C1 verb /ˌɪn.trəˈspekt/

introspect

introspektieren
Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
Er introspektiert oft, bevor er wichtige Entscheidungen trifft.
C1 adjective /ɪˈniː.bri.eɪ.tɪd/

inebriated

betrunken
Meaning
under the influence of alcohol; drunk
Example
He stumbled into the room completely inebriated.
Er stolperte betrunken ins Zimmer.
C1 noun ɪnˈsɒl.vən.si

insolvency

Insolvenz
Meaning
The state of being unable to pay debts owed; bankruptcy.
Example
The company declared insolvency after years of losses.
Das Unternehmen erklärte nach Jahren der Verluste Insolvenz.
C1 adjective /ɪnˈdʌktɪv/

inductive

induktiv
Meaning
characterized by the inference of general laws from particular instances; reasoning from specific cases to general principles
Example
The scientist used inductive reasoning to form a hypothesis.
Der Wissenschaftler verwendete induktives Denken, um eine Hypothese zu formulieren.
C1 verb /ɪmˈpɛər/

impair

beeinträchtigen
Meaning
to weaken or damage something, especially a function or ability
Example
Smoking can impair your lung capacity.
Rauchen kann deine Lungenkapazität beeinträchtigen.
C1 adjective /ˌɪn.ɪˈfɛk.tʃu.əl/

ineffectual

ineffektiv
Meaning
Not producing any or the desired effect; lacking the ability or qualities to achieve a purpose.
Example
The manager’s ineffectual leadership caused the team to lose motivation.
Die ineffektive Führung des Managers führte dazu, dass das Team die Motivation verlor.
C1 verb /ɪmˈpɪndʒ/

impinge

beeinflussen
Meaning
to have an effect or impact on something; to encroach or infringe
Example
The noise from the construction site impinges on our daily activities.
Der Lärm von der Baustelle beeinflusst unsere täglichen Aktivitäten.
C1 noun /ˌɪndɪɡˈneɪʃən/

indignation

Empörung
Meaning
Strong displeasure or anger caused by something unjust, offensive, or insulting.
Example
Public indignation grew after the unfair verdict.
Öffentliche Empörung wuchs nach dem ungerechten Urteil.
C1 verb /ɪnˈstɪl/

instill

einflößen
Meaning
to gradually but firmly establish an idea, attitude, or habit in someone's mind
Example
Parents try to instill good values in their children.
Eltern versuchen, ihren Kindern gute Werte beizubringen.
C1 adjective /ɪnˈfriːkwənt/

infrequent

selten
Meaning
Happening rarely or not often.
Example
He made infrequent visits to his hometown after moving abroad.
Er machte seltene Besuche in seiner Heimatstadt, nachdem er ins Ausland gezogen war.
C1 verb /ɪnˈkrɪmɪˌneɪt/

incriminate

belasten
Meaning
to make someone appear guilty of a crime or wrongdoing
Example
The new evidence could incriminate the suspect in the robbery case.
Die neuen Beweise könnten den Verdächtigen im Raubüberfallfall belasten.
C1 verb ɪmˈbjuː

Imbue

Eine Idee oder ein Gefühl tief in den Geist von jemandem einfließen lassen
Meaning
Mixing some idea or feeling deeply into someone's mind
Example
The teacher tried to imbue students with a love for learning.
Der Lehrer versuchte, den Schülern eine Liebe zum Lernen zu vermitteln.
C1 adverb ɪnˈtrɪn.zɪ.kli

intrinsically

intrinsisch
Meaning
In a way that is naturally or inherently part of something's essential nature.
Example
Some people are intrinsically motivated to learn.
Einige Menschen sind intrinsisch motiviert zu lernen.
C1 noun /ɪˈreləvəns/

irrelevance

Irrelevanz
Meaning
the quality of not being connected to or important for a particular matter; lack of significance
Example
His long explanation only highlighted the irrelevance of the details to the main issue.
Seine lange Erklärung zeigte nur die Irrelevanz der Details für das Hauptthema.
C1 noun /ɪnˈvɜːrʒən/

inversion

Inversion
Meaning
A reversal of the normal order, position, or relationship.
Example
In poetry, inversion is often used to create emphasis.
In der Poesie wird die Inversion oft verwendet, um Nachdruck zu verleihen.
C1 noun /ɪnˈdɪf.ər.əns/

Indifference

indifferenz; gleichgültigkeit; apathie
Meaning
lack of interest, concern, or sympathy; the state of not caring about something
Example
His indifference to his studies resulted in poor grades throughout the semester.
Seine Indifferenz gegenüber seinen Studien führte zu schlechten Noten im gesamten Semester.
C1 adjective /ɪnˈkrɛdjələs/

incredulous

ungläubig
Meaning
unwilling or unable to believe something
Example
He gave her an incredulous look when she claimed she could fly.
Er warf ihr einen ungläubigen Blick zu, als sie behauptete, fliegen zu können.
C1 adjective /ɪnˈdʒʊəriəs/

injurious

schädlich
Meaning
Causing or likely to cause harm or damage.
Example
Smoking is injurious to health.
Rauchen ist schädlich für die Gesundheit.
C1 adjective ɪnˈkʌm.bənt

incumbent

verpflichtend
Meaning
necessary for (someone) as a duty or responsibility.
Example
It is incumbent upon all citizens to obey the law.
Es ist für alle Bürger verpflichtend, das Gesetz zu befolgen.
C1 adjective /ˌɪnsɪˈdɛntəl/

incidental

nebenkosten
Meaning
happening as a minor part or in connection with something else
Example
Incidental expenses like snacks and tips were included in the bill.
Nebenkosten wie Snacks und Trinkgelder wurden in die Rechnung aufgenommen.