irrevocable
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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.
A2 verb /ɪˈmædʒɪn/

imagine

vorstellen
Meaning
to form a mental image of; to believe something unreal to be true
Example
Can you imagine living in a different country?
Kannst du dir vorstellen, in einem anderen Land zu leben?
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.
B1 verb ɪnˈkriːsɪŋ

increasing

steigend
Meaning
Becoming or making greater in size, amount, intensity, or degree; growing.
Example
Increasing awareness about education is necessary.
Das Bewusstsein über Bildung zu steigern ist notwendig.
C2 adjective /ɪˈnɪkwɪtəs/

iniquitous

ungerechts
Meaning
grossly unfair and morally wrong
Example
Slavery was one of the most iniquitous practices in history.
Sklaverei war eine der ungerechtesten Praktiken in der Geschichte.
C2 adjective /ɪnˈvaɪələbl/

inviolable

unverletzlich
Meaning
never to be broken, dishonored, or violated
Example
Human rights are considered inviolable in modern democracies.
Menschenrechte gelten in modernen Demokratien als unverletzlich.
C2 verb /ˈɪmprɪkeɪt/

imprecate

verfluchen
Meaning
To utter a curse or invoke evil upon someone.
Example
The old woman imprecated her enemies with dark words.
Die alte Frau verfluchte ihre Feinde mit dunklen Worten.
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.
C2 noun /ˈɪnroʊd/

inroad

Fortschritt
Meaning
An advance or significant progress, often at the expense of something else.
Example
The company made significant inroads into the mobile market.
Das Unternehmen hat signifikante Fortschritte im Mobilmarkt gemacht.
B2 noun /ˈaɪrəni/

irony

Ironie
Meaning
a situation that is strange or amusing because it is the opposite of what is expected; the use of words to convey the opposite meaning
Example
The irony of the situation was that the winner forgot his own prize.
Die Ironie der Situation war, dass der Gewinner seinen eigenen Preis vergessen hatte.
C1 verb /ɪmˈplɔːr/

implore

bitten
Meaning
To beg someone earnestly or desperately to do something.
Example
She implored him to stay with her.
Sie bat ihn verzweifelt, bei ihr zu bleiben.
B2 noun /ɪnˈhæbɪtənt/

inhabitant

Einwohner
Meaning
a person or animal that lives in a particular place
Example
The inhabitants of the village rely on farming for their livelihood.
Die Einwohner des Dorfes sind auf die Landwirtschaft angewiesen, um ihren Lebensunterhalt zu sichern.
B2 adjective /aɪˈdentɪkəl/

Identical

identisch; genau gleich
Meaning
exactly the same; not different in any way
Example
The twins look completely identical to each other.
Die Zwillinge sehen völlig identisch aus.
A2 verb /ɪnˈvaɪt/

invite

einladen
Meaning
to ask someone to come to an event or to do something
Example
We should invite all our friends to the party.
Wir sollten alle unsere Freunde zur Party einladen.
C1 verb /ɪnˈvoʊk/

invoke

anrufen
Meaning
to call upon a higher power, authority, or principle for help, support, or justification
Example
The lawyer invoked the constitution to defend his client.
Der Anwalt rief die Verfassung an, um seinen Mandanten zu verteidigen.
C2 adjective /ɪnˈvaɪələt/

inviolate

unversehrt
Meaning
free from violation, injury, or desecration; kept safe and untouched
Example
The ancient temple remained inviolate for centuries.
Der alte Tempel blieb über Jahrhunderte unversehrt.
C2 noun /ɪnˈtɒksɪkənt/

intoxicant

Rauschmittel
Meaning
a substance, especially alcohol or a drug, that causes intoxication
Example
Alcohol is the most commonly used intoxicant in many cultures.
Alkohol ist das am häufigsten verwendete Rauschmittel in vielen Kulturen.
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.
B1 noun ɪnˈtel.ɪ.dʒəns

intelligence

Intelligenz
Meaning
The ability to learn, understand, and think in a logical way about things
Example
Intelligence is key in AI development.
Intelligenz ist der Schlüssel zur KI-Entwicklung.
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 adjective /ˌɪndɪˈfætɪɡəbl̩/

indefatigable

unermüdlich
Meaning
persisting tirelessly; incapable of being fatigued
Example
Her indefatigable spirit kept the team motivated during the long project.
Ihr unermüdlicher Geist hielt das Team während des langen Projekts motiviert.
B1 verb /ɪnˈfɔ:m/

inform

informieren
Meaning
to tell someone about something; to give information
Example
Please inform me when you arrive at the airport.
Bitte informieren Sie mich, wenn Sie am Flughafen ankommen.
C1 noun /ɪˌluːmɪˈneɪʃən/

illumination

Beleuchtung
Meaning
the act of lighting something or making something clear
Example
The street was filled with bright illumination from the lamps.
Die Straße war durch die Lampen von hellem Licht erfüllt.
A2 verb /ˌɪntrəˈduːs/

introduce

vorstellen
Meaning
to present someone; to bring in for the first time
Example
Let me introduce you to my friend.
Lass mich dir meinen Freund vorstellen.
C1 noun /ɪnˈtɛstɪn/

intestine

Darm
Meaning
The part of the digestive system where food is digested and absorbed, extending from the stomach to the anus.
Example
The doctor explained how nutrients are absorbed in the small intestine.
Der Arzt erklärte, wie Nährstoffe im Dünndarm aufgenommen werden.
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 adjective /ɪmˈplækəbl/

implacable

unversöhnlich
Meaning
unable to be appeased, calmed, or pacified
Example
The soldiers faced an implacable enemy who refused to surrender.
Die Soldaten standen einem unversöhnlichen Feind gegenüber, der sich weigerte, sich zu ergeben.
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 adjective /ˌɪnæprɪˈhɛnsəbl/

inapprehensible

unverständlich
Meaning
not understandable; incomprehensible
Example
The concept was so abstract that it seemed inapprehensible to most students.
Das Konzept war so abstrakt, dass es für die meisten Studenten unverständlich schien.
B1 verb /ɪnˈsɪst/

insist

bestehen
Meaning
to demand firmly; to state persistently
Example
He insisted on paying the bill.
Er bestand darauf, die Rechnung zu bezahlen.
C1 verb /ɪnˈskraɪb/

inscribe

einritzen
Meaning
to write or carve words or symbols on a surface
Example
They inscribed her name on the trophy.
Sie haben ihren Namen auf dem Pokal eingraviert.
C1 verb /ˈɪmplɪˌkeɪt/

implicate

involvieren
Meaning
To show someone’s involvement in a crime or wrongdoing.
Example
The evidence implicated several officials in the scandal.
Die Beweise implierten mehrere Beamte in den Skandal.
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.
C2 adjective /ˌɪrɪˈkɒnsɪləbl/

irreconcilable

unversöhnlich
Meaning
impossible to make compatible or bring into harmony; unable to resolve differences
Example
The couple separated due to irreconcilable differences.
Das Paar trennte sich aufgrund unversöhnlicher Differenzen.
C1 noun/verb /ˈɪnsɛns/

incense

Weihrauch / erzürnen
Meaning
a substance burned for its sweet smell (noun); to make very angry (verb)
Example
The smell of incense filled the temple, but his rude words incensed her.
Der Duft von Weihrauch füllte den Tempel, aber seine unhöflichen Worte erzürnten sie.
C2 noun /ɪnˈhɪərəns/

inherence

Inhärenz
Meaning
The state of being an essential or permanent part of something.
Example
The inherence of risk is part of every business venture.
Das Inherente Risiko ist Teil jedes geschäftlichen Vorhabens.
C1 adjective /ɪˈlʌstriəs/

illustrious

berühmt
Meaning
Well known, respected, and admired for past achievements.
Example
She had an illustrious career in medicine.
Sie hatte eine berühmte Karriere in der Medizin.
B2 noun /ɪnˈtɜː.prə.tər/

Interpreter

Dolmetscher; Übersetzer;
Meaning
a person who translates orally from one language into another; someone who explains meaning
Example
The international conference hired professional interpreters to translate speeches in real time.
Die internationale Konferenz engagierte professionelle Dolmetscher, um Reden in Echtzeit zu übersetzen.
C2 noun /ɪˈrɛvərəns/

irreverence

Irreverenz
Meaning
a lack of respect for people or things that are generally taken seriously
Example
His jokes about religion showed irreverence to the sacred traditions.
Seine Witze über Religion zeigten Irreverenz gegenüber den heiligen Traditionen.
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.
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 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 adjective /ˌɪməˈtɪəriəl/

immaterial

unwichtig
Meaning
Not important or relevant; lacking physical substance.
Example
The judge ruled that the argument was immaterial to the case.
Der Richter entschied, dass das Argument für den Fall unerheblich war.
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 adjective /ˈaɪərnˌklæd/

ironclad

eiserne
Meaning
impossible to change, break, or dispute; very strong and firm
Example
The company had an ironclad contract with its suppliers.
Das Unternehmen hatte einen eisernen Vertrag mit seinen Lieferanten.
C2 adjective /ɪnˈɛksərəbl/

inexorable

unaufhaltsam
Meaning
Impossible to stop or prevent; relentless.
Example
The inexorable rise of technology is changing every aspect of life.
Der unaufhaltsame Aufstieg der Technologie verändert jeden Aspekt des Lebens.
C1 noun /ɪnˈkɒmpɪtəns/

incompetence

Inkompetenz
Meaning
Lack of ability, skill, or effectiveness in doing something.
Example
The project failed due to the manager’s incompetence.
Das Projekt scheiterte aufgrund der Inkompetenz des Managers.
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.
C2 adjective /ɪnˈæpt/

Inapt

ungeeignet; unpassend
Meaning
not suitable; inappropriate; unfit
Example
His comment was inapt for the formal meeting.
Sein Kommentar war für das formelle Meeting unpassend.
C1 adjective /ˌɪnəˈfɛnsɪv/

inoffensive

harmlos
Meaning
Not likely to offend or provoke; harmless.
Example
His inoffensive remarks kept the conversation friendly.
Seine harmlosen Bemerkungen hielten das Gespräch freundlich.
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.
C2 noun /ɪˌluːmɪˈnɑːti/

illuminati

illuminati
Meaning
a group of people claiming to have special enlightenment or secret knowledge, often linked to conspiracies
Example
Many conspiracy theories involve the Illuminati as a secret world-controlling group.
Viele Verschwörungstheorien beinhalten die Illuminaten als eine geheime, weltbeherrschende Gruppe.
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.
B2 verb /ɪnˈsʌlt/

insult

beleidigen
Meaning
to speak or act in a way that hurts someone's feelings or shows disrespect
Example
He felt insulted by her rude comments.
Er fühlte sich durch ihre unhöflichen Bemerkungen beleidigt.
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.
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.
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.
C1 noun ˌɪndɪˈspensəbl̩ ˈkɒmpɪtənsi

indispensable competency

unverzichtbare Kompetenz
Meaning
Essential skill or ability that cannot be done without; a crucial capability that is absolutely necessary.
Example
Digital literacy is an indispensable competency in the 21st century.
Digitale Kompetenz ist eine unverzichtbare Kompetenz im 21. Jahrhundert.
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.
C2 adjective/noun /ɪnˈkɑːrnədiːn/

incarnadine

lebenskräftiges rot
Meaning
a bright crimson or pinkish-red color
Example
The sky turned incarnadine at sunset.
Der Himmel wurde beim Sonnenuntergang lebendig rot.
B2 adjective /ɪnˈvɪz.ə.bəl/

Invisible

unsichtbar
Meaning
unable to be seen; not visible to the eye
Example
The bacteria are invisible without a microscope.
Bakterien sind unsichtbar ohne ein Mikroskop.
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 noun /aɪˈdiː/

id

Ausweis
Meaning
identification; a document or number used to prove who someone is
Example
Please show your ID at the entrance.
Bitte zeigen Sie Ihren Ausweis am Eingang.
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 /ɪmˈpeɪʃəns/

impatience

Ungeduld
Meaning
The state of being quickly irritated or unable to wait calmly.
Example
His impatience grew as the meeting dragged on.
Seine Ungeduld wuchs, als sich das Treffen in die Länge zog.
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 /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 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.
B2 verb aɪˈdɛntɪfaɪd

identified

identifiziert
Meaning
To recognize or establish who or what someone or something is.
Example
The root causes of the issue need to be identified.
Die Grundursachen des Problems müssen identifiziert werden.
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.
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.
C2 adjective /ɪmˈpɑːlɪtɪk/

impolitic

unüberlegt
Meaning
Unwise or imprudent; not showing good judgment.
Example
It would be impolitic to criticize them openly.
Es wäre unüberlegt, sie öffentlich zu kritisieren.
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.
C2 adjective /ˌɪndɪˈsɒljʊbl/

indissoluble

Unauflöslich
Meaning
Unable to be destroyed, broken, or dissolved.
Example
Marriage was once considered an indissoluble bond.
Die Ehe wurde einst als unauflösliche Bindung betrachtet.
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.
C2 adjective /ɪnˈkoʊ.ɪt/ or /ɪnˈkoʊ.eɪt/

inchoate

unvollständig
Meaning
Just begun and not fully formed; rudimentary.
Example
His inchoate ideas needed more research to be developed.
Seine unvollständigen Ideen benötigten mehr Forschung, um weiterentwickelt zu werden.
C2 adjective /ˈɪm.pi.əs/

Impious

gotteslästerlich; ungläubig
Meaning
irreligious; lacking reverence for religion; blasphemous
Example
The impious act shocked the religious community.
Die gotteslästerliche Handlung schockierte die religiöse Gemeinschaft.
C2 adjective /ɪˈmɒdərət/

immoderate

immoderat
Meaning
excessive; beyond reasonable limits
Example
He has an immoderate love for sweets.
Er hat eine immoderate Liebe zu Süßigkeiten.
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.
C2 noun /ˌɪmprəˈpraɪəti/

impropriety

Ungehörigkeit
Meaning
Failure to observe standards of honesty or modesty; improper behavior.
Example
The politician was accused of financial impropriety.
Der Politiker wurde der finanziellen Ungehörigkeit beschuldigt.
C1 verb /ɪnˈfjuːz/

infuse

infundieren
Meaning
to fill or spread through something; to instill a quality, idea, or feeling
Example
The teacher tried to infuse her students with a love for reading.
Die Lehrerin versuchte, ihren Schülern eine Liebe zum Lesen zu infundieren.
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 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.
B1 noun /ˈɪnstəns/

instance

instanz
Meaning
An example or single occurrence of something.
Example
This is just one instance of his generosity.
Dies ist nur ein Beispiel für seine Großzügigkeit.
B2 noun /ˌɪnstəˈbɪləti/

instability

Instabilität
Meaning
lack of stability or balance; tendency to change, fail, or collapse easily
Example
Political instability has slowed economic growth in the region.
Politische Instabilität hat das wirtschaftliche Wachstum der Region verlangsamt.
C1 verb ɪˈnɪʃɪeɪtɪd

initiated

initiiert
Meaning
Caused a process or action to begin; started something.
Example
The project was initiated to enhance marine biodiversity.
Das Projekt wurde initiiert, um die marine Biodiversität zu verbessern.
C2 adjective /ɪnˈkɒntɪnənt/

incontinent

inkontinent
Meaning
lacking control over urination or defecation; lacking self-restraint
Example
The patient was incontinent after surgery.
Der Patient war nach der Operation inkontinent.
B2 adjective aɪˈkɒnɪk

iconic

ikonisch
Meaning
Very famous or popular, especially being considered to represent particular opinions or a particular time.
Example
The line "It was the best of times..." is iconic.
Der Satz "Es war die beste Zeit..." ist ikonisch.
C1 noun /ɪnˈsæn.ə.ti/

Insanity

Wahnsinn; Geisteskrankheit
Meaning
the state of being seriously mentally ill; extreme foolishness or irrationality
Example
The defense lawyer argued that his client was not guilty by reason of insanity.
Der Verteidiger argumentierte, dass sein Mandant aufgrund von Wahnsinn nicht schuldig sei.
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 noun /ɪnˈfɜː.mə.ti/

Infirmity

Schwäche; Krankheit; Gebrechlichkeit
Meaning
physical or mental weakness; a disease or ailment; frailty
Example
Despite his advanced age and various infirmities, he remained mentally sharp and alert.
Trotz seines fortgeschrittenen Alters und verschiedener Gebrechen blieb er geistig scharf und wachsam.
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 verb /ɪnˈkɑːrsəreɪt/

incarcerate

inhaftieren
Meaning
to imprison or confine someone
Example
The authorities incarcerated the criminal after the trial.
Die Behörden inhaftierten den Kriminellen nach dem Prozess.
C1 noun /ˌɪməˈtjʊərəti/

immaturity

Unreife
Meaning
the state of not being fully developed emotionally, mentally, or physically; lack of maturity
Example
His immaturity made it difficult for him to handle responsibility.
Seine Unreife machte es ihm schwer, Verantwortung zu übernehmen.
C1 adjective /ɪmˈpɜːmiəbl/

impermeable

undurchlässig
Meaning
Not allowing fluid or gas to pass through.
Example
The container is made of impermeable plastic.
Der Behälter besteht aus undurchlässigem Kunststoff.
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.
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.
A2 verb /ɪnˈkluːd/

include

einschließen
Meaning
to have as part of a whole; to contain or comprise
Example
The price includes all taxes.
Der Preis schließt alle Steuern ein.
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.
C2 noun /ˌɪkθiˈɒlədʒi/

ichthyology

Ichthyologie
Meaning
The branch of zoology that deals with fish.
Example
He pursued a degree in ichthyology at the university.
Er hat an der Universität einen Abschluss in Ichthyologie gemacht.
C2 noun /ɪkˈsɔːr.ə/

Ixora

ixora
Meaning
a tropical flowering shrub with clusters of small bright red, orange, or yellow flowers
Example
The bright red ixora bushes lined the pathway to the tropical garden.
Die leuchtend roten Ixora-Büsche säumten den Weg zum tropischen Garten.
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.
C1 adjective /ɪmˈpɜːrtɪnənt/

impertinent

unverschämt
Meaning
rude and showing a lack of respect
Example
It was impertinent of him to question the manager's decision.
Es war unverschämt von ihm, die Entscheidung des Managers zu hinterfragen.
C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

irreparabel
Meaning
Impossible to cure, repair, or remedy.
Example
The damage to the ancient manuscript was irremediable.
Der Schaden an dem alten Manuskript war irreparabel.
C1 adjective /ɪnˈflɛksəbl/

inflexible

unflexibel
Meaning
Not able to bend or change; unwilling to change ideas or behavior.
Example
His inflexible attitude made negotiations difficult.
Seine unflexible Haltung erschwerte die Verhandlungen.
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 noun /ˌɪnˌkeɪpəˈbɪləti/

incapability

Unfähigkeit
Meaning
lack of ability or power to do something; inability or incompetence
Example
His incapability to manage the team led to serious problems.
Seine Unfähigkeit, das Team zu leiten, führte zu ernsthaften Problemen.
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 noun /ˌɪnkjʊˈbeɪʃən/

incubation

der Prozess, Eier, Zellen oder Organismen unter den richtigen Bedingungen für die Entwicklung zu halten
Meaning
the process of keeping eggs, cells, or organisms in the right conditions for development
Example
The incubation of the eggs lasted for three weeks.
Die Inkubation der Eier dauerte drei Wochen.
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.
C2 verb /ˈɪməleɪt/

immolate

immolieren
Meaning
To kill or sacrifice, especially by burning.
Example
The protesters threatened to immolate themselves in front of the building.
Die Demonstranten drohten, sich vor dem Gebäude zu immolieren.
C1 adjective /ɪmˈprɒbəbl/

improbable

unwahrscheinlich
Meaning
Not likely to be true or to happen.
Example
It seems improbable that he will arrive on time.
Es scheint unwahrscheinlich, dass er pünktlich ankommt.
C2 adjective /ˌɪnkəmˈprɛsəbl/

incompressible

uncompressibel
Meaning
Not able to be pressed or squeezed into a smaller space.
Example
Liquids are generally considered incompressible.
Flüssigkeiten gelten im Allgemeinen als uncompressibel.
C2 adjective /ɪnˈsuːsiənt/

insouciant

sorglos
Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
Er zuckte sorglos mit den Schultern und ging weg.
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.
C1 adjective /ɪmˈpæsəbəl/

impassable

unpassierbar
Meaning
Impossible to travel along or over.
Example
The road became impassable after the heavy snowfall.
Die Straße wurde nach dem schweren Schneefall unpassierbar.
C1 adjective /ɪnˈtræk.tə.bəl/

intractable

unlösbar
Meaning
Difficult or impossible to manage, control, or solve.
Example
The conflict has become an intractable problem.
Der Konflikt ist zu einem unlösbaren Problem geworden.
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.
A1 preposition /ɪn/

in

in
Meaning
expressing the situation of being enclosed or surrounded by something
Example
She is in the kitchen preparing dinner.
Sie ist in der Küche und bereitet das Abendessen vor.
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.
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.