Informal
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B1 adjective /ɪnˈfɔːrməl/

Informal

informell; entspannt; locker
Meaning
relaxed and friendly; not official or ceremonial; casual
Example
The meeting was informal and relaxed.
Das Treffen war informell und entspannt.
C2 noun /aɪˈdɒlətri/

idolatry

Götzenverehrung
Meaning
The worship of idols or extreme admiration for someone or something.
Example
The priest condemned the idolatry practiced in the village.
Der Priester verurteilte die im Dorf praktizierte Götzenverehrung.
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.
B1 verb /ɪnˈstɔːl/

install

installieren
Meaning
To place or fix equipment or software so it is ready for use.
Example
He installed the new software on his computer.
Er hat die neue Software auf seinem Computer installiert.
C2 noun /ɪmˈprɑːvɪdəns/

improvidence

Vorsehenslosigkeit
Meaning
Lack of foresight or care for future needs.
Example
His improvidence led to financial difficulties.
Seine Vorsehenslosigkeit führte zu finanziellen Schwierigkeiten.
B2 adjective /ɪnˈfɪə.ri.ər/

inferior

minderwertig
Meaning
Of lower quality, rank, or status.
Example
This material is inferior to the one we used before.
Dieses Material ist minderwertiger als das, das wir vorher verwendet haben.
B2 adjective /ˌɪntəˈpɜːsənl/

interpersonal

zwischenmenschlich
Meaning
Relating to relationships or communication between people.
Example
He has excellent interpersonal skills and gets along well with others.
Er hat ausgezeichnete zwischenmenschliche Fähigkeiten und kommt gut mit anderen aus.
C2 adjective /ˌɪnkəˈməʊdiəs/

incommodious

ungemütlich
Meaning
Uncomfortably small, cramped, or inconvenient.
Example
We had to stay in an incommodious room during the trip.
Wir mussten während der Reise in einem ungemütlichen Zimmer bleiben.
B2 noun /ˈɪnfənt/

infant

Säugling
Meaning
A very young child or baby.
Example
The infant was sleeping peacefully in the cradle.
Der Säugling schlief friedlich im Kinderbett.
C2 noun /ɪmˌpɜːrtərbəˈbɪləti/

imperturbability

Unerschütterlichkeit
Meaning
The quality of being calm and not easily disturbed or upset.
Example
Her imperturbability during the crisis impressed everyone.
Ihre Unerschütterlichkeit während der Krise beeindruckte alle.
C2 noun /ˌɪnkrɪˈdjuːləti/

incredulity

Unglauben
Meaning
the state of being unwilling or unable to believe something
Example
She looked at him with incredulity after hearing the strange story.
Sie sah ihn mit Unglauben an, nachdem sie die seltsame Geschichte gehört hatte.
C2 verb /ˌɪmpɔːrˈtuːn/

importune

beständig bitten
Meaning
To ask someone persistently or pressingly for something
Example
The child importuned his mother for a new toy.
Das Kind beständigte seine Mutter um ein neues Spielzeug.
B2 adjective /ˈaɪsi/

Icy

eisig; extrem kalt; feindlich
Meaning
extremely cold; covered with ice; unfriendly or hostile
Example
The icy wind made everyone shiver.
Der eisige Wind ließ alle zittern.
C1 adjective /ɪnˈsɪdiəs/

insidious

heimtückisch
Meaning
Proceeding in a gradual, subtle way but with harmful effects.
Example
The insidious spread of misinformation can damage trust.
Die heimtückische Verbreitung von Fehlinformationen kann das Vertrauen schädigen.
C2 adjective /ɪˈmɪsəbl/

immiscible

unlöslich
Meaning
Describes liquids that do not mix together.
Example
Oil and water are immiscible liquids.
Öl und Wasser sind unlösliche Flüssigkeiten.
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 adjective /ɪˈnɛpt/

inept

ungeschickt
Meaning
lacking skill or ability; clumsy or incompetent
Example
His inept handling of the situation made it worse.
Sein ungeschicktes Handling der Situation machte sie schlimmer.
C2 noun /ˌɪnsəˈrɛkʃən/

insurrection

aufstand
Meaning
A violent uprising against an authority or government.
Example
The army was called in to suppress the insurrection.
Die Armee wurde gerufen, um den Aufstand zu unterdrücken.
C2 adjective ɪˈnɛfəbl

ineffable

unbeschreiblich
Meaning
Too great or extreme to be expressed or described in words.
Example
The beauty of the landscape was ineffable.
Die Schönheit der Landschaft war unbeschreiblich.
C1 adjective /ɪnˈedəbəl/

Inedible

ungenießbar
Meaning
not suitable or safe for eating; not edible
Example
The mushrooms were poisonous and completely inedible.
Die Pilze waren giftig und völlig ungenießbar.
B1 noun /ɪnˌvɛs.tɪˈɡeɪ.ʃən/

investigation

untersuchung
Meaning
the process of inquiring into or examining something carefully to find the truth
Example
The investigation revealed new evidence about the fraud.
Die Untersuchung enthüllte neue Beweise für den Betrug.
B2 noun /ɪˈluː.ʒən/

Illusion

Illusion
Meaning
a thing that is or is likely to be wrongly perceived or interpreted; a false idea or belief
Example
The magician created a spectacular illusion that made the elephant appear to vanish.
Der Magier erschuf eine spektakuläre Illusion, die den Elefanten verschwinden ließ.
B2 adjective /ɪˈmædʒɪnəbl/

imaginable

vorstellbar
Meaning
Capable of being imagined or conceived.
Example
They offered every imaginable type of food at the festival.
Sie boten auf dem Festival jede erdenkliche Art von Essen an.
C2 adjective /ɪnˈvɛtərət/

inveterate

eingefleischt
Meaning
having a long-established habit, activity, or interest that is unlikely to change
Example
He is an inveterate reader who spends hours in the library every day.
Er ist ein eingefleischter Leser, der jeden Tag Stunden in der Bibliothek verbringt.
C2 verb /ɪˈreɪdieɪt/

irradiate

irradieren
Meaning
to shine light on something; to expose to radiation; to illuminate or brighten
Example
The scientist used a lamp to irradiate the sample.
Der Wissenschaftler verwendete eine Lampe, um die Probe zu irradieren.
C2 noun /ˈɪntərˌveɪl/

intervale

niedriges Land entlang eines Flusses, normalerweise fruchtbar und flach
Meaning
A low-lying tract of land along a river, usually fertile and flat.
Example
The farmers cultivated crops on the lush intervale by the river.
Die Bauern bauten Ernten auf dem fruchtbaren Intervallland am Fluss an.
C1 adjective /ɪmˈpæsɪv/

impassive

passiv
Meaning
Not showing or feeling emotion; expressionless.
Example
Despite the shocking news, she remained impassive.
Trotz der schockierenden Nachrichten blieb sie passiv.
B2 noun /ˌɪntərˈfɪərəns/

interference

Störung
Meaning
the action of interfering with something
Example
The radio signal was disrupted due to interference from nearby electronics.
Das Radiosignal wurde durch Störungen von nahegelegenen Elektronikgeräten unterbrochen.
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 adjective /aɪˈreɪt/

irate

zornig
Meaning
Extremely angry.
Example
The customer became irate after waiting for hours.
Der Kunde wurde zornig, nachdem er stundenlang gewartet hatte.
B2 adjective ˌɪnɪˈfɛktɪv

ineffective

ineffektiv
Meaning
Not producing any significant or desired effect; not achieving the intended result.
Example
Rote learning often proves to be ineffective.
Auswendiglernen erweist sich oft als ineffektiv.
C1 noun /ˌɪn.dʒəˈnjuː.ɪ.ti/

ingenuity

genialität
Meaning
The quality of being clever, original, and inventive.
Example
His ingenuity led to groundbreaking innovations.
Seine Ingenuität führte zu bahnbrechenden Innovationen.
C2 adjective /ˌɪnɪˈsɛnʃəl/

inessential

unwesentlich
Meaning
not necessary or important; not essential
Example
The report removes all inessential details to stay focused.
Der Bericht entfernt alle unwesentlichen Details, um fokussiert zu bleiben.
C1 noun /ɪnˈsek.tɪ.saɪd/

Insecticide

Insektizid
Meaning
a substance used for killing insects; a chemical pesticide that targets insects
Example
The farmer sprayed insecticide on his crops to protect them from harmful bugs.
Der Bauer sprühte Insektizid auf seine Ernte, um sie vor schädlichen Insekten zu schützen.
B2 noun /ɪnˈsaɪdə/

insider

Insider
Meaning
a person within a group or organization who has access to confidential information
Example
He was an insider who knew all the company's secrets.
Er war ein Insider, der alle Geheimnisse der Firma kannte.
B1 adjective /ɪˈmiːdiət/

immediate

sofort
Meaning
happening or done without delay
Example
The doctor gave her immediate attention.
Der Arzt gab ihr sofortige Aufmerksamkeit.
C1 noun /ˈɪn.floʊ/

inflow

Zufluss
Meaning
The movement of things such as money, people, or water into a place.
Example
The inflow of tourists boosted the local economy.
Der Zufluss von Touristen hat die lokale Wirtschaft angekurbelt.
C2 adjective /ɪnˈtɛsteɪt/

intestate

ohne Testament gestorben
Meaning
Having died without leaving a valid will.
Example
She died intestate, so her assets were distributed by law.
Sie ist ohne Testament gestorben, daher wurde ihr Vermögen nach dem Gesetz verteilt.
C2 adjective /ɪnˈkɒŋɡruənt/

incongruent

inkongruent
Meaning
Not in harmony or keeping with the surroundings or other aspects.
Example
His casual outfit looked incongruent at the formal dinner.
Sein lässiges Outfit sah bei dem formellen Abendessen inkongruent aus.
C2 adjective /ˌɪnɪkˈsprɛsəbl/

inexpressible

unaussprechlich
Meaning
Too strong or extreme to be expressed in words.
Example
She felt inexpressible joy at the news of her success.
Sie fühlte unaussprechliche Freude, als sie von ihrem Erfolg erfuhr.
B1 noun /ˈɪnpʊt/

input

Eingabe, bereitgestellte Informationen
Meaning
information, advice, or data that is put into a system, device, or process
Example
The manager asked for everyone's input on the new project.
Der Manager bat um die Meinung aller zum neuen Projekt.
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 adverb, adjective /ˌɪnkɑːɡˈniːtoʊ/

incognito

inkognito
Meaning
In disguise or with one's identity concealed.
Example
The celebrity traveled incognito to avoid the paparazzi.
Der Promi reiste inkognito, um den Paparazzi zu entkommen.
B2 adjective ɪnˈev.ɪ.tə.bəl

inevitable

unvermeidlich
Meaning
Certain to happen; unavoidable.
Example
Death is an inevitable part of life.
Der Tod ist ein unvermeidlicher Teil des Lebens.
C1 adjective, noun /ɪnˈdɪkətɪv/

indicative

indikativ
Meaning
Serving as a sign or expression of something; in grammar, a mood used to make factual statements.
Example
His tone was indicative of his frustration.
Sein Ton war indikativ für seine Frustration.
C1 adjective /ɪˈlɒdʒ.ɪ.kəl/

Illogical

Illogisch
Meaning
not reasonable or sensible; lacking logic
Example
It would be illogical to go swimming in such cold weather.
Es wäre illogisch, bei solch kaltem Wetter schwimmen zu gehen.
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.
C2 noun /ɪnˈvaɪtər/

invitor

Einladender
Meaning
a person who invites someone to an event, meeting, or place
Example
The invitor greeted all the guests warmly at the entrance.
Der Einladende begrüßte die Gäste am Eingang.
C2 adjective /ɪˈrædɪkəbəl/

irradicable

irradikabel
Meaning
not able to be eradicated; impossible to destroy or remove completely
Example
The love of a mother for her child is irradicable.
Die Liebe einer Mutter zu ihrem Kind ist irradikabel.
B2 adjective /aɪˈrɒnɪk/

ironic

ironisch, sarkastisch
Meaning
happening in the opposite way to what is expected, often amusing or sarcastic
Example
It is ironic that the fire station burned down.
Es ist ironisch, dass die Feuerwehrstation abgebrannt ist.
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.
C2 adjective /ˌɪrɪˈtriːvəbl/

irretrievable

unwiederbringlich
Meaning
impossible to recover or regain
Example
The documents were lost in an irretrievable way after the fire.
Die Dokumente wurden nach dem Brand auf unwiederbringliche Weise verloren.
C1 adjective /ɪnˈkɒmpɪtənt/

incompetent

inkompetent
Meaning
Lacking the necessary ability or skills to do something successfully.
Example
He was fired because he was incompetent at his job.
Er wurde entlassen, weil er in seinem Job unfähig war.
B1 verb /ɪnˈvɛs.tɪ.ɡeɪt/

investigate

untersuchen
Meaning
to carry out a systematic inquiry to discover facts or information
Example
The police will investigate the incident thoroughly.
Die Polizei wird den Vorfall gründlich untersuchen.
C2 verb /ɪnˈdʒɛst/

ingest

einnehmen
Meaning
To take food, drink, or another substance into the body, usually by swallowing.
Example
The patient must ingest the medicine with water.
Der Patient muss das Medikament mit Wasser einnehmen.
B2 noun /ˈɪmɪɡrənt/

immigrant

Einwanderer
Meaning
a person who comes to live permanently in a foreign country
Example
The city has welcomed many new immigrants this year.
Die Stadt hat in diesem Jahr viele neue Einwanderer willkommen geheißen.
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.
C2 adverb /ˈaɪsɪli/

icily

kalt
Meaning
In a very cold, unfriendly, or hostile manner.
Example
She replied icily to his question.
Sie antwortete kalt auf seine Frage.
C2 noun /ˈɪndɪkənt/

indicant

anzeiger
Meaning
Something that indicates or points to a fact or condition.
Example
High fever is often an indicant of infection.
Hoher Fieber ist oft ein Anzeiger für eine Infektion.
B2 noun ˌɪn.tɪˈɡreɪ.ʃən

integration

Integration. Vereinigung.
Meaning
The action or process of integrating; the process of combining or adding parts to make a unified whole.
Example
Integration of networks will improve global communication.
Die Integration von Netzwerken wird die globale Kommunikation verbessern.
B2 noun ɪnˈtɛɡrɪti

integrity

integrität
Meaning
The quality of being honest and having strong moral principles; moral uprightness.
Example
Teachers' integrity fosters a positive learning environment.
Die Integrität der Lehrer fördert ein positives Lernumfeld.
C1 noun ˌɪnfrəˈstrʌktʃərəl dɪˈveləpmənt

infrastructural development

infrastrukturelle Entwicklung
Meaning
The process of building and improving the basic physical and organizational structures and facilities needed for the operation of a society or enterprise.
Example
Infrastructural development is necessary for efficient recycling.
Infrastrukturelle Entwicklung ist notwendig für effizientes Recycling.
B2 noun ɪˈlɪtərəsi

illiteracy

Illiteralismus
Meaning
The inability to read and write; lack of education or knowledge in a particular area.
Example
Illiteracy often leads to poverty and unemployment.
Illiteralismus führt oft zu Armut und Arbeitslosigkeit.
C2 noun /ɪmˈpɒs.tʃər/

Imposture

Betrug; Täuschung; Schwindel
Meaning
the practice of deceiving others by pretending to be someone else; fraudulent deception
Example
The elaborate imposture lasted for months before investigators uncovered the truth.
Der aufwendige Betrug dauerte Monate, bevor die Ermittler die Wahrheit entdeckten.
B2 adjective /ɪmˈpɜːrfɪkt/

imperfect

unvollkommen
Meaning
Not perfect; having faults or flaws.
Example
The painting was beautiful despite being imperfect.
Das Gemälde war schön, obwohl es unvollkommen war.
C1 verb /ɪmˈploʊd/

implode

implodieren
Meaning
To collapse or burst inward violently.
Example
The old building imploded during the demolition.
Das alte Gebäude implodierte während der Abrissarbeiten.
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.
C2 noun /ˌɪntərˈsɛʃən/

intercession

Fürbitte
Meaning
the act of intervening or pleading on behalf of another person
Example
The prisoner was released due to the intercession of influential leaders.
Der Gefangene wurde aufgrund der Fürbitte einflussreicher Führer freigelassen.
C2 noun /ɪnˈtɛmpərəns/

intemperance

Intemperanz
Meaning
Lack of moderation or self-control, especially with drinking or eating.
Example
His intemperance in drinking ruined his health.
Seine Intemperanz beim Trinken ruinierte seine Gesundheit.
C2 verb /ˈɪndjʊˌreɪt/

indurate

verhärten
Meaning
To harden or make something physically or emotionally tough.
Example
Years of hardship indurated his spirit.
Jahre der Schwierigkeiten härteten seinen Geist.
A2 noun /ɪŋk/

Ink

Tinte
Meaning
a colored fluid used for writing, drawing, or printing; a dark liquid ejected by cuttlefish
Example
The old fountain pen leaked ink all over his white shirt during the meeting.
Der alte Füller hat Tinte auf sein weißes Hemd während des Treffens verschüttet.
C2 adjective /aɪˈdɒlətrəs/

idolatrous

idolatär
Meaning
Excessively admiring or worshipping someone or something as an idol.
Example
The king was criticized for his idolatrous devotion to wealth.
Der König wurde wegen seiner idolatären Hingabe an den Reichtum kritisiert.
C1 adjective /ɪnˈsʌf.ər.ə.bəl/

insufferable

unerträglich
Meaning
Too extreme to bear; intolerable.
Example
The heat during the summer was insufferable.
Die Hitze im Sommer war unerträglich.
B1 adjective /ˈɪnər/

inner

inner
Meaning
Located inside or closer to the center; relating to one’s thoughts or feelings.
Example
She shared her inner thoughts with her best friend.
Sie teilte ihre inneren Gedanken mit ihrer besten Freundin.
B2 adjective /ˌɪnəˈproʊpriət/

inappropriate

unangemessen
Meaning
not suitable or proper in the circumstances
Example
It was inappropriate to talk loudly in the library.
Es war unangemessen, in der Bibliothek laut zu sprechen.
C2 noun /ˈɪntərˌloʊpər/

interloper

Störenfried
Meaning
A person who becomes involved in a situation or place where they are not wanted.
Example
He felt like an interloper at the private family gathering.
Er fühlte sich wie ein Störenfried bei der privaten Familienversammlung.
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 /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.
C2 noun /ˈɪɡ.nəˌmɪn.i/

ignominy

Ignominie
Meaning
Public shame, disgrace, or dishonor.
Example
He lived the rest of his life in ignominy after the scandal.
Er lebte den Rest seines Lebens in Ignominie nach dem Skandal.
C1 adjective /ɪnˈflæməbəl/

Inflammable

entzündlich; brennbar
Meaning
easily set on fire; flammable; combustible
Example
The inflammable material caught fire quickly.
Das entzündliche Material brannte schnell.
C1 adjective /ˌɪmprɪˈsaɪs/

imprecise

ungenau
Meaning
Not exact or accurate; vague.
Example
His explanation was too imprecise to be helpful.
Seine Erklärung war zu ungenau, um hilfreich zu sein.
C1 adjective /ɪnˈsɒlvənt/

insolvent

zahlungsunfähig
Meaning
unable to pay debts owed
Example
The insolvent firm could not meet its financial obligations.
Das zahlungsunfähige Unternehmen konnte seinen finanziellen Verpflichtungen nicht nachkommen.
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.
A2 adjective/noun /ˈaɪrɪʃ/

irish

Glück
Meaning
relating to Ireland, its people, or its language
Example
The Irish countryside is very beautiful.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
C1 noun /ˌɪməˈrælɪti/

immorality

Unmoral
Meaning
the quality of being immoral; behavior that violates accepted moral standards
Example
The community condemned the immorality of the corrupt officials.
Die Gemeinschaft verurteilte die Unmoral der korrupten Beamten.
B2 noun /ˈaɪkɒn/

icon

Ikone, Symbol
Meaning
A person or thing regarded as a symbol of something, or a graphic symbol on a screen.
Example
The singer became a cultural icon.
Der Sänger wurde zu einer kulturellen Ikone.
B1 verb ɪnˈvɛst

invest

investieren
Meaning
To put money, effort, time, etc. into something to make a profit or get an advantage.
Example
Investing in intellectual property can generate passive income.
In geistiges Eigentum zu investieren kann passives Einkommen generieren.
C1 adjective /ˌɪndɪˈskriːt/

indiscreet

unbedacht
Meaning
Not careful in what one says or does, likely to reveal secrets or offend.
Example
It was indiscreet of him to mention the plan in public.
Es war unbedacht von ihm, den Plan in der Öffentlichkeit zu erwähnen.
B2 adjective /ɪnˈstrʌkʃənəl/

instructional

lehrreich
Meaning
providing knowledge or information; intended to teach
Example
The website offers many instructional videos for beginners.
Die Website bietet viele lehrreiche Videos für Anfänger an.
C2 noun /ɪnˈkɒnstənsi/

inconstancy

Inkonstanz
Meaning
The quality of changing frequently or being unreliable.
Example
The inconstancy of the weather makes planning difficult.
Die Inkonstanz des Wetters erschwert die Planung.
C2 verb /ˌɪn.trəˈmɪt/

intromit

einführen
Meaning
To insert or introduce something into a place or body.
Example
The doctor carefully intromitted the instrument into the wound.
Der Arzt führte das Instrument vorsichtig in die Wunde ein.
B2 adjective /ˈɪmɪnənt/

imminent

unmittelbar
Meaning
About to happen; likely to occur very soon.
Example
Dark clouds signaled that a storm was imminent.
Dunkle Wolken signalisierten, dass ein Sturm unmittelbar bevorstand.
C1 adjective /ˌɪnɔːrˈɡænɪk/

inorganic

anorganisch
Meaning
relating to substances that are not derived from living organisms; lacking organic structure or growth
Example
Inorganic compounds are commonly studied in chemistry labs.
Anorganische Verbindungen sind wichtig in der Chemie.
B1 verb /aɪˈdentɪfaɪ/

identify

identifizieren
Meaning
to recognize; to establish who someone is
Example
Can you identify the suspect?
Können Sie den Verdächtigen identifizieren?
C2 noun /aɪˈkɒnəklæst/

iconoclast

Ikonoklast
Meaning
A person who attacks or criticizes cherished beliefs, traditions, or institutions.
Example
He was known as an iconoclast who challenged old traditions.
Er war als Ikonoklast bekannt, der alte Traditionen herausforderte.
C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

Interregnum
Meaning
A period between rulers or governments when normal leadership is suspended.
Example
The country faced instability during the interregnum after the king’s death.
Das Land erlebte Instabilität während des Interregnums nach dem Tod des Königs.
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 /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.
A1 adjective /ɪmˈpɔː.tənt/

important

wichtig
Meaning
Of great significance or value; likely to have a profound effect on success, survival, or well-being.
Example
Important steps must be taken to address pollution.
Wichtige Schritte müssen unternommen werden, um die Verschmutzung zu bekämpfen.
C2 adjective /ɪnˈkɒrɪdʒəbəl/

incorrigible

unverbesserlich
Meaning
incapable of being corrected, improved, or reformed
Example
He is an incorrigible optimist who never loses hope.
Er ist ein unverbesserlicher Optimist, der niemals die Hoffnung verliert.
C1 adjective /ɪnˈsɪstənt/

insistent

nachdrücklich
Meaning
demanding something firmly and refusing to accept no
Example
The child was insistent on getting a new toy.
Das Kind war nachdrücklich, ein neues Spielzeug zu bekommen.
C1 noun /ˌɪndɪˈdʒɛstʃən/

indigestion

Verdauungsstörung
Meaning
Discomfort or pain in the stomach associated with difficulty in digesting food.
Example
He avoided spicy food because it often gave him indigestion.
Er vermied scharfes Essen, weil es ihm oft Verdauungsstörungen verursachte.
C2 adjective /ˌɪndaɪˈdʒestəbəl/

Indigestible

indigest; schwer zu verdauen
Meaning
difficult or impossible to digest; hard to process in the stomach
Example
The old bread became hard and indigestible.
Das alte Brot wurde hart und ungenießbar.
C1 noun /ɪmˈprɪzənmənt/

imprisonment

Inhaftierung
Meaning
the act of putting someone in prison; the state of being confined as punishment
Example
He faced imprisonment for violating the court order.
Er musste wegen Missachtung der Gerichtsordnung mit Inhaftierung rechnen.
C2 adverb /ˌɪnəzˈmʌtʃ/

inasmuch

insofern
Meaning
To the extent that; considering that.
Example
Inasmuch as you are their teacher, you should guide them carefully.
Insofern du ihr Lehrer bist, solltest du sie sorgfältig anleiten.
C2 noun /ˌɪnvəˈlɪdɪti/

invalidity

Ungültigkeit
Meaning
the state of being invalid, legally void, or lacking force or validity
Example
The court ruled that the contract suffered from invalidity.
Das Gericht entschied, dass der Vertrag ungültig war.
C1 noun ɪnˌɛv.ɪ.təˈbɪl.ɪ.ti

inevitability

Unvermeidbarkeit
Meaning
The quality of being certain to happen and impossible to avoid or prevent.
Example
The inevitability of change is a part of life.
Die Unvermeidbarkeit des Wandels ist ein Teil des Lebens.
C1 adjective /ˌɪn.səˈbɔːr.dɪ.nət/

insubordinate

aufsässig
Meaning
Defiant of authority; disobedient to orders.
Example
The insubordinate employee refused to follow the manager's instructions.
Der aufsässige Mitarbeiter weigerte sich, den Anweisungen des Managers zu folgen.
C1 adjective /aɪˈdɪlɪk/

idyllic

idyllisch und schön
Meaning
Like an idyll; extremely happy, peaceful, or picturesque.
Example
They enjoyed an idyllic vacation by the sea.
Sie genossen einen idyllischen Urlaub am Meer.
C2 adjective /ɪmˈpræktɪkəbl/

impracticable

unpraktisch
Meaning
Not capable of being carried out or put into practice.
Example
The plan seemed impracticable due to limited resources.
Der Plan schien aufgrund begrenzter Ressourcen unpraktisch zu sein.
C2 verb /ɪˈniː.bri.eɪt/

inebriate

betrinken
Meaning
to intoxicate; to make someone drunk
Example
The strong wine was enough to inebriate even the most experienced drinker.
Der starke Wein war genug, um sogar den erfahrensten Trinker zu betrunken.
C1 noun ˌɪnsjʊˈleɪʃən

insulation

Isolierung
Meaning
Material used to prevent heat, sound, or electricity from being transmitted from one area to another.
Example
Insulation of food storage areas can prevent pests from entering.
Die Isolierung von Lebensmittel-Lagerbereichen kann verhindern, dass Schädlinge eindringen.
C2 noun /ˈɪl.i.æd/

iliad

Ilias
Meaning
An ancient Greek epic poem attributed to Homer, describing the events of the Trojan War.
Example
Students studied the Iliad to understand Greek mythology and heroism.
Die Studenten studierten die Ilias, um die griechische Mythologie und den Heroismus zu verstehen.
B2 verb /ˌɪntərˈfɪər/

interfere

Glück
Meaning
to become involved in something that is not your concern; to hinder or obstruct
Example
Parents should not interfere in their children’s personal choices.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
C2 adjective /ɪmˌpɜːrˈsweɪdəbl/

impersuadable

unüberzeugbar
Meaning
not able to be convinced or persuaded
Example
She remained impersuadable despite all our arguments.
Sie blieb unüberzeugbar trotz all unserer Argumente.
B1 adverb /ɪnˈkrɛdɪbli/

incredibly

unglaublich
Meaning
to a great degree; extremely or unbelievably
Example
The view from the top of the mountain was incredibly beautiful.
Der Blick vom Gipfel des Berges war unglaublich schön.
C1 adjective /ɪmˈpɛtʃ.u.əs/

impetuous

impulsiv
Meaning
Acting or done quickly and without thought or care; impulsive.
Example
His impetuous decision led to unexpected consequences.
Seine impulsive Entscheidung führte zu unerwarteten Konsequenzen.
C1 adjective /ˈɪnərmoʊst/

Innermost

am tiefsten; persönlichster
Meaning
most private and secret; deepest; most personal
Example
She shared her innermost feelings with her closest friend.
Sie teilte ihre tiefsten Gefühle mit ihrem engsten Freund.
C1 adjective /ɪmˈpʌlsɪv/

impulsive

impulsiv, spontan
Meaning
acting suddenly without careful thought
Example
She made an impulsive decision to buy the car.
Sie traf eine impulsive Entscheidung, das Auto zu kaufen.
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.
C2 noun /ɪmˈpjuːɪsəns/

impuissance

Ohnmacht, Unfähigkeit
Meaning
inability to take effective action; helplessness
Example
The government’s impuissance in the face of crisis frustrated the people.
Die Ohnmacht der Regierung angesichts der Krise frustrierte die Bevölkerung.