inebriety
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C2 noun /ˌɪn.ɪˈbraɪ.ə.ti/

inebriety

Trunkenheit
Meaning
the state of being drunk or intoxicated
Example
His frequent inebriety led to the loss of his job.
Seine häufige Trunkenheit führte zum Verlust seiner Arbeit.
C2 noun /ˌɪmbəˈsɪləti/

imbecility

Dummheit
Meaning
Extreme foolishness, stupidity, or weakness of mind.
Example
The plan was abandoned due to its sheer imbecility.
Der Plan wurde aufgrund seiner völligen Dummheit aufgegeben.
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 noun /ˈɪmɪnəns/

imminence

Imminenz, Zustand der Nähe
Meaning
the state of being about to happen
Example
The imminence of the storm forced people to take shelter.
Die Imminenz des Sturms zwang die Menschen, Zuflucht zu suchen.
C1 adjective /ˈɪnbɔːrn/

Inborn

angeboren; von Geburt an; inherenz
Meaning
existing from birth; natural; inherent
Example
She has an inborn talent for music.
Sie hat ein angeborenes Talent für Musik.
C2 adjective ˌɪm.pəˈtɜː.bə.bəl

imperturbable

unerschütterlich
Meaning
Unable to be upset or excited; not easily disturbed.
Example
His imperturbable nature made him a great leader.
Seine unerschütterliche Natur machte ihn zu einem großartigen Führer.
B2 noun ˌɪn.əˈveɪ.ʃən

innovation

Innovation
Meaning
The action or process of innovating; a new method, idea, product, etc.
Example
Innovation drives solutions to global challenges.
Innovation treibt Lösungen für globale Herausforderungen voran.
C1 noun /ɪnˈfɜːməri/

infirmary

Krankenhaus
Meaning
A hospital or place where the sick or injured are cared for.
Example
The school had an infirmary for minor injuries.
Die Schule hatte ein Krankenhaus für kleinere Verletzungen.
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 /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 /ɪnˈdem.nə.ti/

Indemnity

Entschädigung
Meaning
security or protection against a loss or other financial burden; compensation for damage or loss
Example
The insurance company provided full indemnity for the damages caused by the flood.
Die Versicherungsgesellschaft stellte vollständige Entschädigung für die durch die Flut verursachten Schäden bereit.
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.
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.
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.
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.
C2 noun /ɪnˌtɜːrpəˈleɪʃən/

interpolation

Interpolation
Meaning
The act of inserting something into a text or estimating values within a sequence of data.
Example
The scientist used interpolation to predict the missing data points.
Der Wissenschaftler verwendete Interpolation, um die fehlenden Datenpunkte vorherzusagen.
C1 noun ɪˌræʃ.ənˈæl.ɪ.ti

irrationality

Irrationalität, Unvernunft, Unlogik
Meaning
The quality of being illogical or unreasonable; lack of rational thought.
Example
His decision was driven by complete irrationality.
Seine Entscheidung war von völliger Irrationalität getrieben.
C1 noun /ɪnˈækjʊrəsi/

inaccuracy

Ungenauigkeit
Meaning
lack of accuracy or precision; an incorrect or wrong detail
Example
The report contained several factual inaccuracies.
Der Bericht enthielt mehrere Ungenauigkeiten.
B1 noun /ɪnˈvɛstər/

investor

investor
Meaning
a person or organization that puts money into financial schemes, property, or business ventures with the expectation of achieving a profit
Example
The investor funded the startup with a large sum of money.
Der Investor finanzierte das Startup mit einer großen Geldsumme.
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 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 /ɪmˈper.ə.tɪv/

imperative

imperativ
Meaning
Of vital importance; crucial; giving or expressing a command.
Example
It is imperative to address the climate crisis immediately.
Es ist imperative, die Klimakrise sofort anzugehen.
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 /ɪˈnɜː.ʃə/

Inertia

Inertie; Bewegungsmangel
Meaning
a tendency to do nothing or remain unchanged; lack of activity or movement
Example
The team's inertia prevented them from adapting to the rapidly changing market conditions.
Die Inertie des Teams verhinderte, dass es sich an die sich schnell ändernden Marktbedingungen anpasste.
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.
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.
C1 adjective ɪnˈtrɪn.zɪk

intrinsic

intrinsisch, wesentlich, natürlich
Meaning
Belonging naturally; essential. Existing as a natural or basic part of something.
Example
Creativity is an intrinsic quality of a great artist.
Kreativität ist eine intrinsische Eigenschaft eines großartigen Künstlers.
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 /ˈɪn.tɪ.mət/

Intimate

intim; nahe; privat
Meaning
close in friendship; private and personal; detailed knowledge
Example
They have an intimate friendship that has lasted for decades.
Sie haben eine intime Freundschaft, die seit Jahrzehnten besteht.
C1 adjective /ɪnˈfleɪtɪd/

inflated

aufgeblasen
Meaning
excessively increased in size, value, or importance; filled with air or gas
Example
The company faced criticism for its inflated prices.
Das Unternehmen sah sich wegen seiner aufgeblasenen Preise Kritik ausgesetzt.
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.
A2 pronoun /ɪtˈsɛlf/

itself

selbst
Meaning
Used to emphasize the thing just mentioned; by its own power or effort.
Example
The cat cleaned itself after eating.
Die Katze putzte sich selbst nach dem Essen.
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.
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.
B1 noun /ɪnˈʃʊərəns/

insurance

Versicherung
Meaning
An arrangement by which a company provides compensation for loss, damage, or illness in return for a premium.
Example
He bought health insurance to cover medical expenses.
Er hat eine Krankenversicherung abgeschlossen, um medizinische Kosten abzudecken.
C2 noun /ɪnˈɛrənsi/

inerrancy

Unfehlbarkeit
Meaning
the belief or quality of being free from error; absolute correctness
Example
Some religious groups strongly affirm the inerrancy of their sacred texts.
Einige religiöse Gruppen bekräftigen nachdrücklich die Unfehlbarkeit ihrer heiligen Schriften.
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.
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 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.
C1 adjective /ɪnˈsɛnsəbl/

insensible

bewusstlos
Meaning
Unconscious; unaware of or indifferent to something.
Example
He was insensible to the cold as he lay in the snow.
Er war gegen die Kälte insensibel, als er im Schnee lag.
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 adverb /ɪnˈdiːd/

indeed

in der Tat
Meaning
used to emphasize or confirm a statement
Example
It was a long journey indeed.
Es war eine lange Reise, in der Tat.
C1 adjective /ˌɪnsɪˈdɛntəl/

incidental

nebenkosten
Meaning
happening as a minor part or in connection with something else
Example
Incidental expenses like snacks and tips were included in the bill.
Nebenkosten wie Snacks und Trinkgelder wurden in die Rechnung aufgenommen.
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.
B1 verb /ɪmˈpɔːrt/

import

importieren
Meaning
to bring goods or services into a country from abroad; to transfer data
Example
The country imports oil from abroad.
Das Land importiert Öl aus dem Ausland.
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.
B2 verb /ɪnˈveɪd/

invade

invasieren
Meaning
to enter a place or country forcefully, especially as an enemy
Example
The army invaded the neighboring country.
Die Armee hat das benachbarte Land invadierte.
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 verb /aɪˈdɒləˌtraɪz/

idolatrize

verehren
Meaning
To worship idols; to regard with excessive devotion or admiration.
Example
They began to idolatrize the statue as a deity.
Sie begannen, die Statue wie eine Gottheit zu verehren.
C2 noun /ɪnˈtɛɡ.jʊ.mənt/

integument

äußere Hülle
Meaning
A natural outer covering, such as skin, shell, or rind.
Example
The snake sheds its integument as it grows.
Die Schlange verliert ihre äußere Hülle, wenn sie wächst.
C2 adjective /ɪnˈeɪliənəbl/

inalienable

unalienierbar
Meaning
Unable to be taken away or transferred; absolute and permanent.
Example
Freedom of speech is an inalienable right.
Die Meinungsfreiheit ist ein unalienierbares Recht.
C1 noun /ˈɪnflʌks/

influx

Zufluss
Meaning
A large arrival or flow of people or things.
Example
The city experienced an influx of tourists during the festival.
Die Stadt erlebte einen Zufluss von Touristen während des Festivals.
C1 noun /ˌɪnkoʊˈhɪrəns/

incoherence

Inkohärenz
Meaning
The quality of being unclear, confused, or lacking logical connection.
Example
His speech was full of incoherence and difficult to follow.
Seine Rede war voller Inkohärenz und schwer zu folgen.
B2 adverb /ɪmˈpɔːtəntli/

importantly

wichtigerweise
Meaning
in a way that is of great significance or value
Example
Importantly, the report highlights the need for immediate action.
Wichtigerweise hebt der Bericht die Notwendigkeit sofortiger Maßnahmen hervor.
C2 adjective /ɪˈnɪmɪkəl/

inimical

feindlich / ungünstig
Meaning
tending to obstruct or harm; unfriendly or hostile
Example
The policy was inimical to the country's economic growth.
Die Politik war ungünstig für das Wirtschaftswachstum des Landes.
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.
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.
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.
B2 verb /ɪnˈkɔːrpəreɪt/

incorporate

inkorporieren
Meaning
to include something as part of a whole; to form a corporation
Example
The new design incorporates advanced technology.
Das neue Design inkorporiert fortschrittliche Technologie.
C2 verb /ɪˈluːmɪn/

illumine

beleuchten
Meaning
to light up or make clear
Example
The rising sun illumined the mountain peaks.
Die aufgehende Sonne illuminierte die Gipfel der Berge.
C2 noun /ɪmp/

imp

kleiner schelmischer Teufel
Meaning
a small mischievous devil or sprite; a playful troublemaker
Example
The child was acting like a little imp, hiding his toys everywhere.
Das Kind benahm sich wie ein kleiner Teufel, der seine Spielzeuge überall versteckte.
C2 noun /ˌɪkθiˈɒlədʒɪst/

ichthyologist

Ichthyologe
Meaning
A scientist who studies fish.
Example
The ichthyologist discovered a new species of fish in the river.
Der Ichthyologe entdeckte eine neue Fischart im Fluss.
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.
C2 noun /ˌɪnədˈvɜːrtəns/

inadvertence

Unachtsamkeit
Meaning
Failure to pay attention; carelessness.
Example
The error happened through sheer inadvertence.
Der Fehler geschah durch reine Unachtsamkeit.
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 /ɪnˈfɔːrmətɪv/

Informative

informativ
Meaning
giving or providing useful information; educational; instructive
Example
The documentary was very informative and educational.
Die Dokumentation war sehr informativ und lehrreich.
B1 noun /ɪnˈtɛnʃən/

intention

Absicht
Meaning
A plan, aim, or purpose behind an action.
Example
Her intention was to finish the project before the deadline.
Ihre Absicht war es, das Projekt vor der Frist abzuschließen.
C1 noun /ɪnˈdɪf.ər.əns/

Indifference

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

indivisible

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

instable

instabil
Meaning
not stable; liable to change, collapse, or fail; lacking firmness or reliability
Example
The instable political situation worried foreign investors.
Die instabile politische Lage beunruhigte ausländische Investoren.
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.
C2 noun /ɪnˈtɜːrstɪs/

interstice

Spalt
Meaning
a small space that lies between things
Example
Light filtered through the narrow interstices of the wall.
Das Licht filterte durch die schmalen Spalten der Wand.
B2 verb /ɪnˈsɜːrt/

insert

einsetzen
Meaning
to put or place something into something else
Example
Please insert the key into the lock.
bitte stecken Sie den Schlüssel in das Schloss.
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.
C2 adverb /ɪnˈdjuːbɪtəbli/

indubitably

zweifellos
Meaning
Without a doubt; certainly.
Example
She is indubitably the best candidate for the job.
Sie ist zweifellos die beste Kandidatin für den Job.
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 /ɪˈledʒ.ə.bəl/

illegible

unleserlich
Meaning
Not clear enough to be read; unreadable.
Example
The doctor’s handwriting was almost illegible.
Die Handschrift des Arztes war fast unleserlich.
B2 adjective /aɪˈrɒnɪkəl/

ironical

ironisch
Meaning
expressing irony; having the nature of irony
Example
Her ironical tone made everyone uncomfortable.
Ihr ironischer Ton machte alle unwohl.
B2 noun /ˌɪntərˈsɛkʃən/

intersection

Kreuzung
Meaning
a point where two or more things intersect, especially a road or path
Example
The intersection of Main Street and 5th Avenue is always busy.
Die Kreuzung der Main Street und der 5th Avenue ist immer befahren.
B2 noun /ɪnˈdʒɛkʃən/

injection

Injektion
Meaning
the act of introducing a substance into the body through a needle
Example
The nurse gave me an injection to prevent the infection.
Die Krankenschwester gab mir eine Injektion, um die Infektion zu verhindern.
B2 verb /ɪnˈflɪkt/

inflict

zufügen
Meaning
to cause something unpleasant or painful to be suffered by someone or something
Example
The storm inflicted considerable damage to the city.
Der Sturm fügte der Stadt erheblichen Schaden zu.
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

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

induct

jemanden formell in eine Position, Organisation oder ein Amt aufnehmen
Meaning
to formally admit someone into a position, organization, or office
Example
She was inducted into the university's honor society.
Sie wurde in die Ehrenvereinigung der Universität aufgenommen.
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.
C2 noun /ˌɪntərˈlɒkjətər/

interlocutor

Gesprächspartner
Meaning
a person who takes part in a conversation or dialogue
Example
She was a skilled interlocutor during the debate.
Sie war eine geschickte Gesprächspartnerin während der Debatte.
C2 verb /ɪmˈpɛnd/

impend

drohen
Meaning
to be about to happen; to loom threateningly
Example
Dark clouds suggested that a storm was impeding.
Dunkle Wolken deuteten darauf hin, dass ein Sturm bevorstand.
A1 noun /aɪˈdiː.ə/

Idea

Idee; Konzept; Vorschlag
Meaning
a thought or suggestion as to a possible course of action; a concept or mental impression
Example
She had a brilliant idea for solving the company's efficiency problem.
Sie hatte eine brillante Idee zur Lösung des Effizienzproblems des Unternehmens.
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.
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.
C1 adjective /ɪmˈpɛn.ɪ.trə.bəl/

impenetrable

Meaning
Impossible to pass through or enter; impossible to understand.
Example
The dense forest was nearly impenetrable.
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.
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 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.
B1 noun /ɪnˈstrʌkʃən/

instruction

Anweisung
Meaning
Detailed information telling how something should be done or operated.
Example
Please read the instruction carefully before using the machine.
Bitte lesen Sie die Anweisung sorgfältig, bevor Sie die Maschine benutzen.
C1 adjective /ɪˈrɛfjʊtəbəl/

Irrefutable

unwiderlegbar
Meaning
impossible to deny or disprove; undeniable
Example
The evidence against him was irrefutable.
Der Beweis gegen ihn war unwiderlegbar.
C2 adjective /ɪnhɑːrˈmoʊniəs/

Inharmonious

disharmonisch
Meaning
lacking harmony; discordant in sound; not in tune
Example
The inharmonious sounds from the broken piano made everyone cover their ears.
Die disharmonischen Geräusche vom kaputten Klavier zwangen alle, sich die Ohren zuzuhalten.
C1 adjective /ɪnˈvɜːs/

Inverse

umgekehrt; entgegengesetzt
Meaning
opposite in order, nature, or effect; reversed
Example
There is an inverse relationship between price and demand.
Es gibt eine umgekehrte Beziehung zwischen Preis und Nachfrage.
C2 adjective /ˌɪnsəˈpɔːrtəbl̩/

insupportable

unerträglich
Meaning
Too extreme or difficult to be endured.
Example
The heat was insupportable during the long journey.
Die Hitze war unerträglich während der langen Reise.
C1 adjective ɪnɪɡˈzɔːstɪbəl

inexhaustible

unerschöpflich
Meaning
Unable to be used up or worn out; limitless.
Example
His inexhaustible energy allowed him to work tirelessly on his projects.
Seine unerschöpfliche Energie ermöglichte es ihm, unermüdlich an seinen Projekten zu arbeiten.
B2 noun /ˌɪnsɪˈkjʊərɪti/

insecurity

Unsicherheit
Meaning
lack of confidence or assurance; a state of uncertainty or vulnerability
Example
Her insecurity made her doubt her abilities despite her experience.
Ihre Unsicherheit ließ sie an ihren Fähigkeiten zweifeln.
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.
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.
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.
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.
C2 noun /ɪnˈtɛstəsi/

intestacy

Tod ohne Testament
Meaning
The condition of dying without having made a valid will.
Example
His estate was divided according to the laws of intestacy.
Sein Vermögen wurde gemäß den Gesetzen der Intestaz vererbt.
B2 noun /ˈɪnˌsaɪt/

insight

Einsicht
Meaning
The ability to understand the true nature of something; deep understanding.
Example
Her insight into human behavior made her a successful psychologist.
Ihre Einsicht in menschliches Verhalten machte sie zu einer erfolgreichen Psychologin.
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.
B2 adjective /ˌɪntərˈmiːdiət/

intermediate

mittelstufig
Meaning
Coming between two things in time, place, or order; in the middle level or stage.
Example
She is taking an intermediate-level French course.
Sie nimmt einen Französischkurs auf mittlerem Niveau.
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.
C1 adjective /ɪˈrɛpərəbəl/

Irreparable

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

infiltrate

infiltrieren
Meaning
to secretly enter or gain access to a place or group
Example
The spies managed to infiltrate the enemy base.
Die Spione schafften es, die feindliche Basis zu infiltrieren.
C1 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 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.
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.
B1 adjective /ˈɪrɪteɪtɪŋ/

irritating

reizend
Meaning
causing annoyance, impatience, or mild anger
Example
The constant noise from the street is extremely irritating.
Der ständige Lärm von der Straße ist extrem reizend.
B1 adjective /ɪnˈtɜːrnəl/

internal

intern
Meaning
situated inside; relating to the inside or inner part of something
Example
The company is conducting an internal audit this month.
Das Unternehmen führt diesen Monat eine interne Prüfung durch.
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.
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.
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.
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.