illicit
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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.
C2 noun /ˈɪn.dɪ.dʒəns/

indigence

Armut
Meaning
a state of extreme poverty or destitution
Example
The charity was founded to help people living in indigence.
Die Wohltätigkeitsorganisation wurde gegründet, um Menschen zu helfen, die in Armut leben.
B2 noun /ɪmˈpɒlɪtnəs/

impoliteness

Unhöflichkeit
Meaning
lack of good manners or courtesy; rude behavior
Example
His impoliteness towards the guests shocked everyone.
Seine Unhöflichkeit gegenüber den Gästen schockierte alle.
C2 adjective /ˌɪmpəˈmɪsəbl/

impermissible

unzulässig
Meaning
Not permitted or allowed.
Example
Such behavior is impermissible in the workplace.
Solches Verhalten ist am Arbeitsplatz unzulässig.
B1 adjective /ɪnkəˈrɛkt/

incorrect

falsch
Meaning
not correct or accurate
Example
The information you provided was incorrect.
Die Informationen, die du gegeben hast, waren falsch.
B1 noun ɪnˈven.ʃən

invention

Erfindung
Meaning
The action of inventing something, typically a process or device.
Example
The invention revolutionized communication.
Die Erfindung revolutionierte die Kommunikation.
C2 adjective /ɪnˈklɛmɛnt/

inclement

unbeständiges Wetter
Meaning
unpleasantly cold, wet, or stormy (usually weather)
Example
The match was canceled due to inclement weather.
Das Spiel wurde wegen des schlechten Wetters abgesagt.
B1 noun /ˈɪn.flu.əns/

Influence

Einfluss; Macht
Meaning
the capacity to have an effect on the character, development, or behavior of someone or something
Example
The teacher's positive influence helped the student overcome his learning difficulties.
Der positive Einfluss des Lehrers half dem Schüler, seine Lernschwierigkeiten zu überwinden.
B2 noun /ˌɪm.ɪˈteɪ.ʃən/

Imitation

Imitation; Nachahmung; Kopie
Meaning
the action of using someone or something as a model; a copy of something original
Example
His imitation of the famous actor was so good that everyone burst into laughter.
seine Imitation des berühmten Schauspielers war so gut, dass alle in Lachen ausbrachen.
C1 adjective /ˈɪndɪɡoʊ bluː/

Indigo-blue

indigoblau
Meaning
a deep blue color with a purplish tinge
Example
The indigo-blue sky looked magnificent at twilight.
Der indigoblaue Himmel sah bei Dämmerung wunderschön aus.
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.
B2 adverb /ɪnˈɛvɪtəbli/

inevitably

unvermeidlich
Meaning
in a way that cannot be avoided or prevented
Example
Inevitably, the team faced challenges during the project.
Unvermeidlich stand das Team während des Projekts vor Herausforderungen.
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.
C2 verb /aɪˈtɪnəˌreɪt/

itinerate

reisen
Meaning
To travel from place to place, usually for the purpose of work or preaching.
Example
The missionary itinerated throughout the region to spread the message.
Der Missionar reiste durch die Region, um die Botschaft zu verbreiten.
C2 adjective /ˌɪlˈneɪ.tʃəd/

ill-natured

von schlechter Natur
Meaning
Having a bad or unpleasant character; unkind or malicious.
Example
He made an ill-natured remark about his colleague.
Er machte eine Bemerkung von schlechter Natur über seinen Kollegen.
B1 noun ˈɪmpækt

impact

Einfluss
Meaning
A strong effect or influence; the action of one object coming forcibly into contact with another.
Example
The decision had great impact.
Die Entscheidung hatte großen Einfluss.
B2 noun /ɪnˈvɛstɪˌɡeɪtər/

investigator

Glück
Meaning
a person who carries out a formal inquiry or investigation
Example
The investigator gathered evidence from the crime scene.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
C1 noun /ɪnˈfɜːrnoʊ/

inferno

Brand
Meaning
a large, intense fire that is dangerously out of control
Example
The building turned into an inferno within minutes.
Das Gebäude verwandelte sich in ein Inferno innerhalb von Minuten.
C2 adjective /ɪnˈsɛnseɪt/

insensate

gefühllos
Meaning
lacking physical sensation or empathy; without feeling or sensitivity
Example
The dictator's insensate cruelty shocked the world.
Die gefühllose Grausamkeit des Diktators schockierte die Welt.
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 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.
B2 noun, verb /ɪntʃ/

inch

Zoll / langsam bewegen
Meaning
A unit of length equal to 2.54 centimeters; or to move slowly and carefully in small amounts.
Example
She inched closer to the edge of the stage.
Sie rutschte langsam näher an den Rand der Bühne.
C2 verb /ɪnˈɡreɪʃiˌeɪt/

ingratiate

Meaning
To gain favor or approval by deliberate effort, often in a flattering way.
Example
She tried to ingratiate herself with her boss by complimenting him often.
B2 noun /ɪnˌtɜːrprəˈteɪʃən/

interpretation

Interpretation
Meaning
the action of explaining the meaning of something
Example
The teacher gave her own interpretation of the poem.
Die Lehrerin gab ihre eigene Interpretation des Gedichts.
C2 adjective /ɪnˈdɛkərəs/

indecorous

indekorös
Meaning
Not in keeping with good taste and propriety; improper.
Example
His indecorous behavior shocked the audience.
Sein indekoröses Verhalten schockierte das Publikum.
C2 adjective /ˌɪrɪˈdɛsənt/

iridescent

irisierend
Meaning
showing luminous colors that seem to change when seen from different angles
Example
She wore an iridescent dress that sparkled in the light.
Sie trug ein irisierendes Kleid, das im Licht funkelte.
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 /ɪˈmoʊbəl/

immobile

unbeweglich
Meaning
unable to move or be moved
Example
After the accident, he was immobile for weeks.
Nach dem Unfall war er wochenlang unbeweglich.
C1 noun /ɪmˈpɜː.mə.nəns/

impermanence

Vergänglichkeit
Meaning
The state or fact of lasting for only a limited period of time.
Example
The philosophy of Buddhism emphasizes the impermanence of life.
Die buddhistische Philosophie betont die Vergänglichkeit des Lebens.
C2 adjective /ɪmˈprɛɡnəbl̩/

impregnable

uneinnehmbar
Meaning
Unable to be captured, broken into, or defeated.
Example
The fortress was considered impregnable by the enemy.
Die Festung wurde vom Feind als uneinnehmbar angesehen.
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.
C2 adjective /ɪmˈpɛn.ɪ.tənt/

impenitent

unbußfertig
Meaning
Not feeling regret or shame about one's actions.
Example
The criminal remained impenitent after the trial.
Der Kriminelle blieb unbußfertig nach dem Prozess.
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.
C1 noun /ˈɪnlɛt/

inlet

Einlass
Meaning
A small arm of the sea, a lake, or a river; an opening or passage for entry.
Example
The boat entered a narrow inlet along the coast.
Das Boot fuhr in einen engen Einlass entlang der Küste.
B2 noun /ˈɪm.pʌls/

Impulse

Impuls; plötzlicher Drang
Meaning
a sudden strong and unreflective urge or desire to act; a driving force or motivation
Example
She bought the expensive dress on impulse and later regretted the purchase.
Sie kaufte das teure Kleid im Impuls und bereute später den Kauf.
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.
A2 adjective /ɪnˈtɛlɪdʒənt/

intelligent

intelligent
Meaning
Having or showing high mental capacity, quick to learn and understand.
Example
She is one of the most intelligent students in the class.
Sie ist eine der intelligentesten Schülerinnen in der Klasse.
C2 adjective /ɪˈrɛzəluːt/

irresolute

unentschlossen
Meaning
uncertain or indecisive; lacking determination
Example
He stood irresolute at the crossroads, unsure which path to take.
Er stand unentschlossen an der Kreuzung und wusste nicht, welchen Weg er nehmen sollte.
C1 noun /ˈɪnkwest/

inquest

Untersuchung
Meaning
A legal or official inquiry, especially into the cause of a death.
Example
The inquest revealed the cause of the accident.
Die Untersuchung enthüllte die Ursache des Unfalls.
C1 noun /ɪˌreɡjəˈlærɪti/

irregularity

Unregelmäßigkeit
Meaning
lack of regularity or consistency; a deviation from what is normal, expected, or orderly
Example
The audit revealed several financial irregularities in the company’s records.
Die Prüfung deckte mehrere finanzielle Unregelmäßigkeiten in den Unterlagen des Unternehmens auf.
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.
B2 adjective /ˌɪrɪˈzɪstəbəl/

Irresistible

unwiderstehlich
Meaning
too attractive and tempting to be resisted; impossible to resist
Example
The chocolate cake was absolutely irresistible.
Der Schokoladenkuchen war absolut unwiderstehlich.
B2 adjective, noun /ˌɪn.təlˈɛk.tʃu.əl/

intellectual

intellektuell
Meaning
Relating to the intellect; a person who engages in critical thinking and study.
Example
She enjoys intellectual discussions about philosophy.
Sie genießt intellektuelle Diskussionen über Philosophie.
B2 noun ˌɪmplɪmenˈteɪʃən

implementation

Umsetzung
Meaning
The process of putting a decision or plan into effect; execution.
Example
Proper implementation of policies is crucial.
Die ordnungsgemäße Umsetzung von Richtlinien ist entscheidend.
B2 verb /ɪˈnɪʃieɪt/

initiate

einleiten
Meaning
to begin or start; to introduce someone to a new activity
Example
The company will initiate a new training program.
Das Unternehmen wird ein neues Schulungsprogramm einleiten.
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.
B1 noun ˌɪndɪˈpendəns

independence

Unabhängigkeit
Meaning
The fact or state of being independent; freedom from outside control; not being subject to another's authority.
Example
Independence inspired the movement.
Die Unabhängigkeit inspirierte die Bewegung.
B1 noun ˈɪn.də.stri

industry

Industrie
Meaning
Economic activity concerned with the processing of raw materials and manufacture of goods in factories.
Example
The industry focuses on luxury experiences.
Die Industrie konzentriert sich auf Luxus-Erlebnisse.
B2 adjective /ˌɪn.trəˈdʌk.tər.i/

introductory

einführend
Meaning
Serving as an introduction; preliminary or preparatory.
Example
The professor gave an introductory lecture on economics.
Der Professor hielt einen einführenden Vortrag über Wirtschaft.
B2 verb ˈɪmplɪmentɪd

implemented

umgesetzt
Meaning
Put a decision or plan into effect; carried out or executed.
Example
The master plans were partially implemented.
Die Masterpläne wurden teilweise umgesetzt.
C1 adverb /ˈɪnwərdli/

inwardly

innerlich
Meaning
In the mind or spirit; not outwardly visible.
Example
She smiled outwardly but inwardly she was worried.
Sie lächelte äußerlich, aber innerlich war sie besorgt.
B2 adjective /ɪˈmjuːn/

immune

immunisiert
Meaning
protected from disease or from the effects of something
Example
Children who are vaccinated are immune to many diseases.
Kinder, die geimpft sind, sind gegen viele Krankheiten immun.
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.
C1 adjective /ɪˈmækjələt/

immaculate

makellos
Meaning
perfectly clean, neat, or free from flaws
Example
Her room was immaculate, with everything in its place.
Ihr Zimmer war makellos, alles war an seinem Platz.
C1 adjective /ˌɪrɪˈspɛktɪv/

Irrespective

unabhängig; ohne Berücksichtigung
Meaning
without taking something into account; regardless of
Example
All students will be treated equally, irrespective of their background.
Alle Studenten werden gleich behandelt, unabhängig von ihrem Hintergrund.
C2 adjective /ˌɪrɪˈprəʊtʃəbl̩/

irreproachable

tadellos
Meaning
Beyond criticism; faultless.
Example
The judge was known for his irreproachable integrity.
Der Richter war bekannt für seine tadellose Integrität.
B2 adjective /ˌɪnkəmˈpliːt/

incomplete

unvollständig
Meaning
Not finished, lacking some parts or not whole.
Example
Her report was incomplete and needed further details.
Ihr Bericht war unvollständig und brauchte weitere Details.
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.
B2 verb /ɪnˈdʌldʒ/

indulge

sich hingeben
Meaning
to allow oneself to enjoy something enjoyable, often excessively
Example
He indulged in a piece of chocolate cake after dinner.
Er hat nach dem Abendessen ein Stück Schokoladenkuchen genossen.
B2 adjective ɪˈmɜː.sɪv

immersive

immersiv
Meaning
Providing, involving, or characterized by deep absorption or immersion in something.
Example
Virtual reality creates an immersive learning environment.
Virtuelle Realität schafft eine immersive Lernumgebung.
A2 adjective /ɪmˈpɑːsəbl/

impossible

unmöglich
Meaning
not able to occur, exist, or be done
Example
It is impossible to finish this work in one day.
Es ist unmöglich, diese Arbeit an einem Tag zu beenden.
B2 verb /ɪnˈkwaɪər/

inquire

fragen
Meaning
to ask; to investigate
Example
She inquired about the job opening.
Sie fragte nach der Stellenanzeige.
B2 adjective /ˌɪnkənˈviːniənt/

Inconvenient

unbequem; störend; problematisch
Meaning
causing trouble, difficulties, or discomfort; awkward; troublesome
Example
The broken elevator made it inconvenient to reach the top floor.
Der kaputte Aufzug machte es unbequem, den obersten Stock zu erreichen.
C2 noun /ˈɪrɪɡənt/

irrigant

Bewässerungsflüssigkeit
Meaning
A liquid used for irrigation, especially in medical or agricultural contexts.
Example
The doctor used a sterile irrigant during the procedure.
Der Arzt verwendete während des Verfahrens ein steriles Bewässerungsflüssigkeit.
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 noun ˌɪn.ɪˈfɪʃ.ən.si

inefficiency

Ineffizienz
Meaning
The state or quality of not achieving maximum productivity; failure to make the best use of time or resources.
Example
Government inefficiency leads to slow project completion.
Regierungsineffizienz führt zu langsamer Projektfertigstellung.
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.
C2 verb /ɪnˈsteɪt/

instate

einsetzen
Meaning
To set up in position, office, or authority.
Example
The board decided to instate her as the new director.
Der Vorstand entschied, sie als neue Direktorin zu installieren.
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 adjective /ɪmˈprɒvɪdənt/

improvident

unbedacht
Meaning
Not having or showing foresight; spending wastefully or without thought for the future.
Example
His improvident habits left him with no savings.
Seine unbedachten Gewohnheiten ließen ihn ohne Ersparnisse zurück.
B2 verb /ɪmˈprɪzən/

imprison

einsperren
Meaning
to put someone in prison; to confine or restrict someone's freedom
Example
The judge imprisoned the criminal for five years.
Der Richter hat den Verbrecher für fünf Jahre eingesperrt.
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.
C2 noun /ɪnˈsɪpiəns/

incipience

beginn
Meaning
the beginning or initial stage of something
Example
The project was still in its incipience when funding was approved.
Das Projekt war noch in seinem Beginn, als die Finanzierung genehmigt wurde.
B2 adjective ˌɪn.təˈræk.tɪv

interactive

interaktiv
Meaning
Allowing a two-way flow of information between it and a user, responding to the user's input.
Example
Interactive learning keeps students engaged in lessons.
Interaktives Lernen hält die Schüler in den Lektionen engagiert.
C1 adjective ɪˈluː.sər.i

illusory

illusorisch
Meaning
Based on illusion; not real although seeming to be.
Example
His sense of security was entirely illusory.
Sein Gefühl der Sicherheit war völlig illusorisch.
C2 adjective /ɪmˈpæsɪbəl/

impassible

unempfindlich
Meaning
Incapable of suffering or feeling pain (used mainly in theological or philosophical contexts).
Example
Some philosophers argue that God is impassible and cannot experience human emotions.
Einige Philosophen argumentieren, dass Gott unempfindlich ist und keine menschlichen Emotionen erfahren kann.
C2 adjective /ˌɪn.ɪˈlʌk.tə.bəl/

ineluctable

unvermeidlich
Meaning
Impossible to avoid or escape; inevitable.
Example
Death is an ineluctable part of human existence.
Der Tod ist ein unvermeidlicher Bestandteil der menschlichen Existenz.
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.
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.
C2 adjective /ɪnˈsɪpiənt/

incipient

incipient
Meaning
in an initial stage; beginning to develop
Example
The incipient storm made the sky turn dark and heavy.
Der incipiente Sturm ließ den Himmel dunkel und schwer werden.
B2 adjective /ɪnˈklaɪnd/

inclined

geneigt
Meaning
having a tendency or disposition toward something
Example
He is inclined to help those in need.
Er ist geneigt, den Bedürftigen zu helfen.
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.
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 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.
B2 noun /ɪnˈvɒlvmənt/

involvement

Beteiligung
Meaning
the act of taking part in something
Example
His involvement in the project was crucial.
Seine Beteiligung am Projekt war entscheidend.
B2 adjective /ɪmˈprɒp.ər/

Improper

unangemessen; inkorrekt; ungeeignet
Meaning
inappropriate; incorrect; not suitable
Example
It would be improper to discuss personal matters in a business meeting.
Es wäre unangemessen, in einer Geschäftssitzung persönliche Angelegenheiten zu besprechen.
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 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.
B2 adjective, noun /ɪzˈreɪli/

israeli

israelisch
Meaning
relating to Israel or its people; a person from Israel
Example
She works for an Israeli company.
Sie arbeitet für ein israelisches Unternehmen.
C2 adjective /ɪnˈtræn.sɪ.dʒənt/

intransigent

unversöhnlich, stur, hartnäckig
Meaning
Unwilling or refusing to change one's views or to agree about something.
Example
His intransigent stance delayed the agreement.
Seine intransigente Haltung verzögerte die Vereinbarung.
C2 noun /ˈɪrɪtənsi/

irritancy

Reizbarkeit
Meaning
the quality or state of causing irritation; legal or formal invalidation
Example
The constant noise became an irritancy to the neighbors.
Der ständige Lärm wurde zu einer Reizbarkeit für die Nachbarn.
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 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.
B2 verb /ɪnˈtɜːrprət/

interpret

interpretieren / übersetzen
Meaning
to explain the meaning of something; to translate orally
Example
She had to interpret the speech for the foreign guests.
Sie musste die Rede für die ausländischen Gäste übersetzen.
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.
C2 noun /ˌɪmpəˈtjuːəsəti/

impetuosity

Impulsivität
Meaning
The quality of being rash or impulsive.
Example
His impetuosity often got him into trouble.
Seine Impetuosität brachte ihn oft in Schwierigkeiten.
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.
C2 verb /ɪnˈfætʃueɪt/

infatuate

verzücken
Meaning
to inspire with an intense but short-lived passion or admiration
Example
He was infatuated with her beauty.
Er war von ihrer Schönheit verzaubert.
B2 adjective /ɪnˈtækt/

intact

intakt
Meaning
Remaining whole, complete, and undamaged.
Example
Despite the storm, the old house remained intact.
Trotz des Sturms blieb das alte Haus intakt.
C1 verb /ɪnˈvɪɡ.ər.eɪt/

invigorate

beleben
Meaning
To give strength or energy to someone or something.
Example
A morning walk can invigorate both body and mind.
Ein morgendlicher Spaziergang kann Körper und Geist beleben.
C2 verb /ɪmˈpjuːt/

impute

zurechnen
Meaning
to attribute a fault or responsibility to someone
Example
They imputed the company's success to good leadership.
Sie imputierten den Erfolg des Unternehmens auf gute Führung.
C1 adjective /ɪnˈses.ənt/

incessant

unaufhörlich
Meaning
Continuing without pause or interruption; constant.
Example
The incessant noise from the construction site made it hard to concentrate.
Der unaufhörliche Lärm von der Baustelle erschwerte es, sich zu konzentrieren.
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 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 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.
B2 adjective /ɪnˈseɪn/

insane

verrückt
Meaning
mentally ill; extremely foolish or unreasonable
Example
The idea of jumping off the cliff seemed insane.
Die Idee, von der Klippe zu springen, schien verrückt.
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.
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.
A2 verb /ɪɡˈnɔːr/

ignore

ignorieren
Meaning
to refuse to take notice of; to disregard intentionally
Example
She decided to ignore the rude comments.
Sie beschloss, die unhöflichen Kommentare zu ignorieren.
B1 adjective ɪnˈdʌs.tri.əl

industrial

industriell
Meaning
Relating to or characterized by industry.
Example
Industrial sectors boost exports.
Industrielle Sektoren steigern den Export.
C2 adjective /ˌɪrɪˈfrændʒɪbəl/

irrefrangible

unverletzlich
Meaning
Not to be broken, violated, or infringed
Example
The constitution guarantees certain irrefrangible rights to every citizen.
Die Verfassung garantiert jedem Bürger bestimmte unverletzliche Rechte.
B2 verb /ɪnˈhæbɪt/

inhabit

bewohnen
Meaning
to live in; to occupy as a dwelling
Example
Many animals inhabit the forest.
Viele Tiere bewohnen den Wald.
C2 noun /ɪnˈtɛnʃən/

intension

innere Bedeutung
Meaning
The internal content of a concept; the set of attributes implied by a word or phrase.
Example
The intension of the word 'dog' includes being a mammal and domesticated.
Die Intension des Wortes 'Hund' umfasst, ein Säugetier und domestiziert zu sein.
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 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 adverb /ɪnˈvɜːrs.li/

Inversely

umgekehrt; entgegengesetzt
Meaning
in a way that is opposite or contrary; in reverse order or manner
Example
The price of goods is inversely related to their availability in the market.
Der Preis von Waren ist umgekehrt mit ihrer Verfügbarkeit auf dem Markt verbunden.
B2 adjective /ɪsˈlɑːmɪk/

islamic

islamisch
Meaning
relating to Islam, its followers, or its teachings
Example
The city has many Islamic cultural centers.
Die Stadt hat viele islamische Kulturzentren.
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.
C2 adjective /ɪmˈplaɪəbl/

impliable

implizierbar
Meaning
Capable of being implied or suggested.
Example
The meaning of the statement is not directly clear but is impliable from the context.
Die Bedeutung der Aussage ist nicht direkt klar, aber sie ist aus dem Kontext implizierbar.
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 adjective /ˌɪnɪkˈsplɪkəbl/

inexplicable

unverständlich
Meaning
Impossible to explain or understand.
Example
The sudden disappearance of the file was inexplicable.
Das plötzliche Verschwinden der Datei war unverständlich.