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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 /ˈɪmɪˌteɪtər/

imitator

Nachahmer
Meaning
a person who copies the behavior, style, or actions of others
Example
He became famous as an imitator of popular singers.
Er wurde als Nachahmer beliebter Sänger berühmt.
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.
C2 noun /ˌɪnədˈvɜːrtəns/

inadvertence

Unachtsamkeit
Meaning
Failure to pay attention; carelessness.
Example
The error happened through sheer inadvertence.
Der Fehler geschah durch reine Unachtsamkeit.
C2 noun /ɪmˌprɒb.əˈbɪl.ə.ti/

Improbability

Unwahrscheinlichkeit
Meaning
the quality or state of being improbable; unlikely to be true or to happen
Example
The improbability of winning the lottery twice didn't stop her from buying tickets.
Die Unwahrscheinlichkeit, zweimal die Lotterie zu gewinnen, hielt sie nicht davon ab, Tickets zu kaufen.
B2 verb /ˈɪnəveɪt/

innovate

innovieren
Meaning
To introduce new methods, ideas, or products.
Example
The company must innovate to stay ahead of its competitors.
Das Unternehmen muss innovieren, um seinen Konkurrenten voraus zu bleiben.
B1 adjective /ɪmˈpres.ɪv/

Impressive

beeindruckend
Meaning
striking; remarkable; having the ability to impress
Example
Her impressive performance earned her a standing ovation.
Ihre beeindruckende Darbietung brachte ihr eine Standing Ovation.
C1 noun ˌɪn.fɪlˈtreɪ.ʃən

infiltration

Infiltration, heimlicher Zugang
Meaning
The process of entering or gaining access to an organization or place surreptitiously.
Example
Cybersecurity prevents infiltration into sensitive data.
Cybersicherheit verhindert die Infiltration in sensible Daten.
B2 noun /ˌɪntəˈrʌpʃən/

interruption

Unterbrechung
Meaning
the act of stopping or breaking the continuity of something; a pause caused by an external action
Example
The meeting was delayed due to an unexpected interruption.
Das Treffen wurde wegen einer unerwarteten Unterbrechung verschoben.
B2 noun ˌɪr.ɪˈɡeɪ.ʃən

irrigation

bewässerung
Meaning
The artificial application of water to land or soil.
Example
Irrigation systems improve crop yields in dry regions.
Bewässerungssysteme verbessern die Erträge in trockenen Regionen.
C2 noun /ˈɪnˌɡreɪt/

ingrate

Undankbarer
Meaning
An ungrateful person; someone who shows no appreciation.
Example
He worked hard for his friend, but the ingrate never thanked him.
Er arbeitete hart für seinen Freund, aber der Undankbare hat ihm nie gedankt.
C1 adjective /ˌaɪdiəˈlɪstɪk/

Idealistic

idealistisch
Meaning
pursuing high principles or ideals; unrealistically optimistic
Example
She has an idealistic view of changing the world.
Sie hat eine idealistische Sicht darauf, die Welt zu verändern.
C2 noun (compound/erroneous entry) /ɪnˈɛksərəbl ɑːrmi/

inexorableinexorablearmy

unaufhaltsame Armee
Meaning
This appears to be a corrupted or concatenated form; interpreted as 'inexorable army' — an unstoppable or relentless force.
Example
The rebels feared the inexorable army approaching their stronghold.
Die Rebellen fürchteten die unaufhaltsame Armee, die sich ihrer Festung näherte.
C2 verb /ɪnˈhjuːm/

inhume

begraben
Meaning
to bury a dead body in the ground
Example
They inhumed the warrior with full honors.
Sie begruben den Krieger mit voller Ehre.
C1 adjective /ɪnˈfæləbl̩/

infallible

unfehlbar
Meaning
incapable of making mistakes or being wrong
Example
Her judgment seemed infallible in matters of finance.
Ihr Urteil schien in finanziellen Angelegenheiten unfehlbar.
B2 noun /ˌɪnəˈbɪləti/

inability

unfähigkeit
Meaning
the state of being unable to do something
Example
His inability to make decisions affected his career.
Seine Unfähigkeit, Entscheidungen zu treffen, beeinträchtigte seine Karriere.
C1 noun /ˈɪmɪdʒəri/

imagery

Bildsprache
Meaning
visually descriptive or figurative language, especially in a literary work
Example
The poet's use of imagery brought the scene to life.
Der Einsatz von Bildsprache des Dichters erweckte die Szene zum Leben.
B1 adjective /ɪnˈvɑːlvd/

involved

beteiligt
Meaning
complicated or engaged in something
Example
She was deeply involved in community service.
Sie war tief in den Gemeinschaftsdiensten beteiligt.
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 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 /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.
C2 noun /ɪnˈɡrætɪˌtjuːd/

ingratitude

Undankbarkeit
Meaning
Lack of gratitude; failure to show thanks or appreciation.
Example
His ingratitude hurt her feelings after all she had done for him.
Seine Undankbarkeit tat ihr weh, nachdem sie so viel für ihn getan hatte.
A2 noun /ˈɪndʒəri/

injury

Verletzung
Meaning
Harm or damage to a person’s body caused by an accident or attack.
Example
He suffered a serious injury during the football match.
Er erlitt eine schwere Verletzung während des Fußballspiels.
B2 noun ˌɪn.təˈven.ʃən

intervention

Eingreifen
Meaning
The action or process of intervening; involvement in a situation to improve or help it.
Example
The intervention of the UN was crucial in resolving the conflict.
Das Eingreifen der UNO war entscheidend für die Beilegung des Konflikts.
B2 noun /ˌɪmɪˈɡreɪʃən/

immigration

Einwanderung
Meaning
the action of coming to live permanently in a foreign country
Example
Immigration policies vary from country to country.
Die Immigrationspolitik variiert von Land zu Land.
C1 noun /ˌɪmpɔːrˈteɪʃən/

importation

Import
Meaning
The act of bringing goods or services into a country from abroad
Example
The importation of luxury goods is strictly regulated.
Die Import von Luxusgütern ist streng reguliert.
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.
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 noun /ˌɪdiəˈsɪŋkrəsi/

idiosyncrasy

Idiosynkrasie
Meaning
A distinctive or peculiar characteristic, habit, or mannerism unique to an individual.
Example
One of her idiosyncrasies was humming while working.
Eine ihrer Idiosynkrasien war es, beim Arbeiten zu summen.
B2 verb ɪmˈpoʊz

imposes

auferlegen
Meaning
To establish or apply by authority; to force something unwelcome or unfamiliar to be accepted or put in place.
Example
Pollution imposes harmful effects on the environment.
Verschmutzung auferlegt schädliche Auswirkungen auf die Umwelt.
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.
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 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 /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.
C2 adjective /ɪmˈpɒndərəbl̩/

imponderable

unermesslich
Meaning
Something difficult or impossible to estimate, assess, or understand
Example
The outcome of the election depends on many imponderable factors.
Das Ergebnis der Wahl hängt von vielen unermesslichen Faktoren ab.
C2 adjective /ɪmˈpɔːrtʃənət/

importunate

aufdringlich
Meaning
Persistent to the point of annoyance or intrusion
Example
The importunate salesman kept calling despite repeated refusals.
Der aufdringliche Verkäufer rief immer wieder an, trotz wiederholter Ablehnungen.
A1 pronoun /aɪ/

i

ich
Meaning
used by a speaker to refer to himself or herself
Example
I am learning English every day.
Ich lerne jeden Tag Englisch.
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

Untreue
Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
Ihre Ehe endete wegen seiner Untreue.
C2 adjective /ˈɪnfəntaɪl/

infantile

kindlich
Meaning
characteristic of an infant; childish
Example
His infantile behavior embarrassed everyone at the meeting.
Sein kindliches Verhalten peinigte alle in der Besprechung.
C1 noun /ˌɪmɔːrˈtæləti/

immortality

Unsterblichkeit
Meaning
the state of living forever; eternal life or lasting fame beyond death
Example
Many ancient cultures believed that heroes could achieve immortality through great deeds.
Viele alte Kulturen glaubten, dass Helden durch große Taten Unsterblichkeit erlangen können.
B2 adjective ˈɪn.tɪ.ɡreɪ.tɪd

integrated

integriert
Meaning
Combining or coordinating separate elements so as to provide a harmonious, interrelated whole.
Example
Integrated systems optimize efficiency.
Integrierte Systeme optimieren die Effizienz.
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.
A2 adverb /ɪˈmiːdiətli/

immediately

sofort
Meaning
at once; without delay
Example
She responded immediately to the emergency call.
Sie antwortete sofort auf den Notruf.
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 /ɪnˈsɜːrdʒənt/

insurgent

Aufständischer
Meaning
A person who rises in revolt against authority or government.
Example
The army arrested several insurgents after the attack.
Die Armee verhaftete mehrere Aufständische nach dem Angriff.
B2 noun /ɪnˈventər/

inventor

Erfinder
Meaning
a person who creates or designs something new, especially a device, method, or process
Example
The inventor patented her new medical device.
Der Erfinder ließ sein neues medizinisches Gerät patentieren.
C1 adjective ˌɪdiəsɪnˈkrætɪk

idiosyncratic

eigenartig und individuell
Meaning
Relating to idiosyncrasy; peculiar or individual.
Example
His idiosyncratic behavior set him apart from his colleagues.
Sein idiosynkratisches Verhalten unterschied ihn von seinen Kollegen.
B1 noun /ˈɪnsɪdənt/

incident

vorfall
Meaning
an event or occurrence, often unpleasant or unusual
Example
The police quickly responded to the incident in the park.
Die Polizei reagierte schnell auf den Vorfall im Park.
B2 verb /ɪtʃ/

itch

Juckreiz
Meaning
to feel an urge to scratch; to have a restless desire
Example
My skin itches from the mosquito bites.
Meine Haut juckt wegen der Mückenstiche.
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.
C1 noun /ˌɪnækˈtɪvɪti/

inactivity

Inaktivität
Meaning
the state of not being active physically or mentally; lack of action
Example
Prolonged inactivity can negatively affect both physical and mental health.
Längere Inaktivität kann die körperliche und geistige Gesundheit beeinträchtigen.
C2 noun /ˈɪndələns/

indolence

Indolenz
Meaning
Avoidance of activity or exertion; laziness.
Example
His indolence kept him from finishing the project on time.
Seine Indolenz hinderte ihn daran, das Projekt rechtzeitig abzuschließen.
C1 adjective /ˌɪrɪˈprɛsəbl̩/

irrepressible

unaufhaltsam
Meaning
Impossible to control or restrain.
Example
She had an irrepressible urge to laugh during the speech.
Sie konnte ihre unaufhaltsame Lust zu lachen während der Rede nicht verbergen.
A2 verb /ɪnˈvaɪtɪd/

invited

eingeladen
Meaning
asked someone formally or politely to go somewhere or do something
Example
She was invited to the party.
Sie wurde zur Party eingeladen.
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.
B2 noun /ɪnˈveɪʒən/

invasion

Invasion
Meaning
An instance of invading a country, region, or personal space with armed force or unwelcome presence.
Example
The army prepared for the possibility of an invasion.
Die Armee bereitete sich auf die Möglichkeit einer Invasion vor.
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 adjective /ˈɪnsələnt/

insolent

unverschämt, arrogant
Meaning
showing a rude and arrogant lack of respect
Example
The insolent student refused to follow the teacher's instructions.
Der unverschämte Schüler weigerte sich, den Anweisungen des Lehrers zu folgen.
C1 adjective /ɪnˈhɛrənt/

inherent

innehrent
Meaning
Existing in something as a natural, permanent, or essential quality.
Example
There are inherent risks in extreme sports.
Es gibt inhärente Risiken bei Extremsportarten.
B2 adjective ˌɪnstrəˈmɛntl

instrumental

instrumentell
Meaning
Serving as a crucial means, agent, or tool; having a part in bringing about a result.
Example
Children can be instrumental in building a better society.
Kinder können bei der Schaffung einer besseren Gesellschaft eine wichtige Rolle spielen.
C2 adjective /ɪnˈdʒɛnjuəs/

ingenuous

gutgläubig
Meaning
Innocent, naive, and unsuspecting; showing childlike simplicity and sincerity.
Example
Her ingenuous smile revealed her genuine kindness.
Ihr gutgläubiges Lächeln zeigte ihre wahre Freundlichkeit.
C1 adjective ˌɪn.krəˈmen.təl

incremental

inkrementell
Meaning
Relating to or denoting an increase or addition, especially one of a series on a fixed scale; proceeding in small stages.
Example
Incremental changes ensure sustainability.
Inkrementelle Veränderungen gewährleisten Nachhaltigkeit.
B1 adverb /ˈɪnstəntli/

instantly

sofort
Meaning
immediately, without any delay
Example
He replied instantly to the message.
Er antwortete sofort auf die Nachricht.
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.
B1 adjective /ˌɪnɪkˈspɛnsɪv/

Inexpensive

günstig; preiswert; erschwinglich
Meaning
not costing a lot of money; affordable; budget-friendly
Example
This restaurant offers delicious and inexpensive meals for students.
Dieses Restaurant bietet köstliche und günstige Mahlzeiten für Studenten an.
C2 verb /ɪnˈsɪnəˌreɪt/

incinerate

verbrennen
Meaning
to burn something completely until it is reduced to ashes
Example
The city decided to incinerate the medical waste for safety.
Die Stadt beschloss, den medizinischen Müll aus Sicherheitsgründen zu verbrennen.
B1 noun /ɪnˈstrʌkʃənz/

instructions

Anweisungen
Meaning
Detailed information on how something should be done or operated.
Example
Please follow the instructions on the box.
Bitte folgen Sie den Anweisungen auf der Box.
C1 noun /ˌɪntəkəˈnɛktɪvɪti/

interconnectivity

Interkonnektivität
Meaning
The state of being interconnected or the degree of connectivity between components
Example
The rise of interconnectivity has transformed global communication.
Der Aufstieg der Interkonnektivität hat die weltweite Kommunikation verändert.
C1 noun /ɪnˈɛk.wɪ.ti/

inequity

Ungerechtigkeit
Meaning
Lack of fairness or justice; unequal distribution or treatment.
Example
Social inequity continues to be a global issue.
Soziale Ungerechtigkeit bleibt ein globales Problem.
C2 adjective /ˌɪndɪˈsɜːrnəbl/

indiscernible

undurchsichtig
Meaning
Impossible or difficult to see, notice, or distinguish.
Example
The difference between the two shades was almost indiscernible.
Der Unterschied zwischen den beiden Farbtönen war fast undurchsichtig.
B1 noun aɪˈdɛntɪti

identity

Identität
Meaning
The fact of being who or what a person or thing is; the characteristics determining who or what a person or thing is.
Example
The day reinforces our national identity.
Der Tag stärkt unsere nationale Identität.
C1 noun /ˌɪntərˈdʒɛkʃən/

interjection

Interjektion
Meaning
a word or phrase used to express sudden emotion or reaction, often standing alone
Example
Words like 'wow' and 'ouch' are common interjections in English.
Wörter wie 'wow' und 'au' sind häufige Interjektionen im Englischen.
B2 adjective /ɪnˈtɛns/

intense

intensiv
Meaning
Of extreme force, degree, or strength.
Example
She felt intense pain after the accident.
Sie fühlte nach dem Unfall intensive Schmerzen.
B2 adjective /ɪˈmædʒ.ɪ.nər.i/

Imaginary

imaginär; fiktiv; nicht real
Meaning
existing only in imagination; not real; fictional
Example
The child had an imaginary friend who she talked to every day.
Das Kind hatte einen imaginären Freund, mit dem es jeden Tag sprach.
C2 adjective /ɪmˈperɪʃəbəl/

Imperishable

unvergänglich; ewig; unsterblich
Meaning
not subject to decay; lasting forever; eternal
Example
The imperishable beauty of classical art continues to inspire generations.
Die unvergängliche Schönheit der klassischen Kunst inspiriert weiterhin Generationen.
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.
C2 noun /ˌɪnkænˈdɛsəns/

incandescence

Infrarotstrahlung
Meaning
the emission of light from a hot object; brilliance
Example
The incandescence of the candle filled the dark room.
Die Infrarotstrahlung der Kerze füllte den dunklen Raum.
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.
C2 noun /ɪˈluːmɪnənt/

illuminant

Beleuchtung
Meaning
A substance or device that produces light.
Example
The lamp acted as an illuminant in the dark cave.
Die Lampe fungierte als Beleuchtung in der dunklen Höhle.
B2 noun /ˈɪntərvəl/

interval

intervall
Meaning
a period of time between two events or points; a pause or break in activity
Example
There was a short interval between the two performances.
Es gab ein kurzes Intervall zwischen den beiden Aufführungen.
C1 noun ˌɪm.pʌlˈsɪv.ɪ.ti

impulsivity

Impulsivität
Meaning
The tendency to act quickly and without thought or care; lack of self-control.
Example
His impulsivity led him to make reckless choices.
Seine Impulsivität führte ihn dazu, unüberlegte Entscheidungen zu treffen.
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 verb /ˌɪnstɪˈtjuːʃənəlaɪz/

institutionalize

institutionalisieren
Meaning
to establish something as a formal institution, custom, or practice
Example
The government seeks to institutionalize environmental protection.
Die Regierung strebt danach, den Umweltschutz zu institutionalisieren.
B2 adjective + noun aɪˈdiːəl ɪnˈvaɪrənmənt

ideal environment

ideale Umgebung
Meaning
Perfect or most suitable conditions for growth or development
Example
Winter creates an ideal environment for vegetable growth.
Der Winter schafft eine ideale Umgebung für das Wachstum von Gemüse.
B2 adjective /ɪnˈkluːsɪv/

inclusive

inklusiv
Meaning
Including all the services, facilities, or items normally expected or required; not excluding any section of society or any party involved.
Example
Inclusive growth benefits all sections of society.
Inklusives Wachstum kommt allen gesellschaftlichen Bereichen zugute.
C2 adjective /ˌɪnˈekspɜːrt/

inexpert

unerfahren
Meaning
not skilled or experienced; lacking expertise
Example
The inexpert handling of the machine caused several mistakes.
Die unerfahrene Bedienung der Maschine verursachte mehrere Fehler.
B2 adjective /ɪˈmætʃʊr/

Immature

unreif; nicht vollständig entwickelt; kindlich
Meaning
not fully developed; lacking emotional or intellectual development; childish
Example
His immature behavior during the meeting disappointed everyone.
Sein unreifes Verhalten während des Treffens enttäuschte alle.
C1 noun ɪmˈpɛə(r)mənt

impairment

Schaden, Behinderung
Meaning
The state of being damaged or weakened; a disability or handicap.
Example
Hearing impairment can be caused by long-term exposure to loud noise.
Hörverlust kann durch längere Exposition gegenüber lauten Geräuschen verursacht werden.
C2 noun /ˌɪnjuːˈɛndəʊ/

innuendo

Andeutung
Meaning
An allusive or oblique remark or hint, typically a suggestive or disparaging one.
Example
The manager's innuendo was directed towards his competitor.
Die Andeutung des Managers war an seinen Konkurrenten gerichtet.
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.
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.
B2 noun ɪˈmjuː.nɪ.ti

immunity

immunität
Meaning
The ability of an organism to resist a particular infection or toxin by the action of specific antibodies.
Example
A strong immunity protects against infections.
Eine starke Immunität schützt vor Infektionen.
A2 adjective, noun /ɪˈtæliən/

italian

Glück
Meaning
relating to Italy, its people, or its language; a person from Italy
Example
She loves Italian food.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
C2 adjective /ɪnˈkɒnstənt/

inconstant

unbeständig
Meaning
frequently changing; not consistent or dependable
Example
His inconstant moods made it difficult to work with him.
Seine unbeständigen Launen machten es schwierig, mit ihm zu arbeiten.
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.
C1 adjective ɪmˈpɛkəbl

impeccable

makellos
Meaning
In accordance with the highest standards; faultless.
Example
His impeccable taste in fashion was admired by all his peers.
Sein makelloser Geschmack in der Mode wurde von allen seinen Kollegen bewundert.
C1 verb /ɪmˈpɑːrt/

impart

vermitteln
Meaning
to make information known; to bestow or communicate
Example
The teacher imparted valuable knowledge to her students.
Der Lehrer vermittelte wertvolles Wissen an seine Schüler.
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.
A1 preposition /ˈɪntuː/

into

hinein
Meaning
expressing movement or direction to the inside of something
Example
She walked into the room quietly.
Sie ging leise in das Zimmer.
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

Einzug
Meaning
A space left at the beginning of a line of text; a notch or deep recess on a surface.
Example
The teacher asked the students to use proper indentation in their essays.
Der Lehrer bat die Schüler, die richtige Einrückung in ihren Aufsätzen zu verwenden.
C1 adjective /ɪnˈtɛlɪdʒəbl/

intelligible

verständlich
Meaning
Able to be understood; clear enough to be comprehended.
Example
Her speech was barely intelligible over the noise.
Durch den Lärm war ihre Rede kaum verständlich.
B2 adjective ɪnˈdɪdʒɪnəs

indigenous

einheimisch
Meaning
Originating or occurring naturally in a particular place; native.
Example
Indigenous plants are well adapted to the local environment.
Einheimische Pflanzen sind gut an die lokale Umgebung angepasst.
B2 noun /ɪnˈdʌstriəl ˌrɛvəˈluːʃən/

Industrial Revolution

Industrielle Revolution
Meaning
The rapid development of industry that occurred in Britain in the late 18th and 19th centuries, brought about by the introduction of machinery and characterized by the use of steam power and the growth of factories.
Example
The Industrial Revolution marked a shift in production processes.
Die industrielle Revolution markierte einen Wandel in den Produktionsprozessen.
C1 adjective /ˌɪnˌkɒnsɪˈkwɛnʃəl/

inconsequential

unbedeutend
Meaning
Not important or significant; too small to matter.
Example
The mistake was minor and inconsequential.
Der Fehler war geringfügig und unbedeutend.
C2 adjective /ɪɡˈnoʊ.bəl/

Ignoble

ehrenlos; niederträchtig; gemein
Meaning
dishonorable; not noble in character; base or mean
Example
His ignoble actions betrayed his friends' trust.
Seine ehrenlosen Taten verrieten das Vertrauen seiner Freunde.
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.
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.
C2 adjective /ˌɪm.pəˈfɛk.tə.bəl/

imperfectible

unperfektibel
Meaning
Incapable of being made perfect or complete.
Example
Some human qualities are considered imperfectible.
Einige menschliche Eigenschaften gelten als unperfektibel.
C1 noun /ɪˈmɜː.ʃən/

immersion

Eintauchen
Meaning
Complete engagement in an environment or experience.
Example
Immersion in VR games makes users feel like they are inside the virtual world.
Das Eintauchen in VR-Spiele lässt die Benutzer das Gefühl haben, als wären sie in der virtuellen Welt.
C2 adjective /ɪnˈsuːpərəbl/

insuperable

unüberwindbar
Meaning
Impossible to overcome or surpass.
Example
The team faced insuperable challenges during the expedition.
Das Team stand während der Expedition vor unüberwindbaren Herausforderungen.
B2 noun /ɪnˈfɪnɪti/

infinity

unendlich
Meaning
A concept describing something without any limit or end.
Example
The universe seems to stretch into infinity.
Das Universum scheint sich ins Unendliche auszudehnen.
C1 adverb /ɪnˈdɛfɪnətli/

indefinitely

unbestimmt
Meaning
for an unlimited or unspecified period of time
Example
The project has been postponed indefinitely.
Das Projekt wurde unbestimmt verschoben.
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 adjective /ˌɪnækˈsɛsəbl/

inaccessible

unzugänglich
Meaning
unable to be reached, entered, or understood
Example
The remote village is almost inaccessible during the rainy season.
Das abgelegene Dorf ist während der Regenzeit fast unzugänglich.
B1 noun /ɪnˈɡriːdiənt/

ingredient

Zutat
Meaning
A component part or element of something, especially in a recipe.
Example
Flour is a key ingredient in baking bread.
Mehl ist eine wichtige Zutat beim Brotbacken.
B2 verb /ˈɪl.ə.streɪt/

illustrate

veranschaulichen
Meaning
to explain or make something clear by using examples, pictures, or comparisons
Example
The teacher used diagrams to illustrate the concept.
Der Lehrer hat Diagramme verwendet, um das Konzept zu veranschaulichen.
C2 adjective /ˌɪnɪkˈstrɪkəbl/

inextricable

untrennbar
Meaning
Impossible to separate or escape from.
Example
The two friends shared an inextricable bond.
Die beiden Freunde teilten ein untrennbares Band.
B2 noun ˈɪn.deks

index

Index
Meaning
An alphabetical list of names, subjects, etc. with references to the places where they occur, typically found at the end of a book; a sign or measure of something.
Example
An index organizes critical data.
Ein Index organisiert wichtige Daten.
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 adjective /ɪnˈɛstɪməbl/

inestimable

unermesslich
Meaning
Too great or valuable to be measured or estimated.
Example
Her contribution to the project was of inestimable value.
Ihr Beitrag zum Projekt war von unermesslichem Wert.
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.