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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 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 /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.
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 noun /ɪnˈtɒlərəns/

intolerance

intoleranz
Meaning
unwillingness to accept or endure beliefs, behaviors, or conditions different from one's own
Example
The leader was criticized for his intolerance toward other religions.
Der Führer wurde wegen seiner Intoleranz gegenüber anderen Religionen kritisiert.
C1 adjective /ɪˈmeʒərəbəl/

Immeasurable

unermesslich
Meaning
too large or extensive to measure; boundless
Example
The immeasurable love of a mother knows no bounds.
Die unermessliche Liebe einer Mutter kennt keine Grenzen.
B2 adjective/noun /ɪˈrɑːki/

iraqi

irakisch
Meaning
relating to Iraq or its people
Example
The Iraqi culture is rich and diverse.
Die irakische Kultur ist reich und vielfältig.
C1 adjective /ˌɪnkəmˈpætəbl/

incompatible

unvereinbar
Meaning
Not able to exist or work together without conflict.
Example
Their personalities were completely incompatible.
Ihre Persönlichkeiten waren völlig unvereinbar.
B2 noun ˈɪn.frəˌstrʌk.tʃər

infrastructure

infrastruktur
Meaning
The basic physical and organizational structures and facilities needed for the operation of a society or enterprise.
Example
Digital infrastructure is vital for future advancements.
Digitale Infrastruktur ist entscheidend für zukünftige Fortschritte.
B1 adverb /ɪˈnɪʃəli/

initially

zunächst
Meaning
At the beginning; at first.
Example
Initially, he refused the offer but later accepted it.
Zu Beginn lehnte er das Angebot ab, nahm es später jedoch an.
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.
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.
B2 noun ˌɪm.plɪˈkeɪ.ʃən

implication

Implikation
Meaning
A conclusion that can be drawn from something although it is not explicitly stated; a likely consequence.
Example
The implication of climate change is severe.
Die Implikation des Klimawandels ist schwerwiegend.
C1 adjective ɪnˈsaɪ.sɪv

incisive

scharfsinnig
Meaning
Intelligently analytical and clear-thinking; showing clear thought and good understanding of what is important.
Example
His incisive comments revealed the core issues.
Seine scharfsinnigen Kommentare enthüllten die Kernprobleme.
A1 noun /ˈaɪs kriːm/

Ice-cream

eiscreme
Meaning
a frozen sweet dessert made from dairy products, usually served cold
Example
Children love to eat ice-cream on hot summer days.
Kinder essen gerne Eiscreme an heißen Sommertagen.
C1 noun /ˌɪnsɪɡˈnɪfɪkəns/

insignificance

Bedeutungslosigkeit
Meaning
The quality of being unimportant or trivial.
Example
He felt a sense of insignificance in the vast universe.
Er fühlte ein Gefühl der Bedeutungslosigkeit im weiten Universum.
C2 adjective /ɪnˈfɜːrnəl/

infernal

höllisch
Meaning
relating to hell; extremely troublesome or annoying
Example
The workers complained about the infernal noise from the construction site.
Die Arbeiter beschwerten sich über den höllischen Lärm von der Baustelle.
B2 adjective /ˈɪnfɪnɪt/

infinite

unendlich
Meaning
limitless or endless in space, extent, or number
Example
The universe is often described as infinite.
Das Universum wird oft als unendlich beschrieben.
C1 adjective /ɪnˈtrɛpɪd/

intrepid

unerschrocken
Meaning
fearless and adventurous, often used humorously
Example
The intrepid traveler explored the jungle alone.
Der unerschrockene Reisende erkundete den Dschungel alleine.
B2 noun /ˈaɪkɒn/

icon

Ikone, Symbol
Meaning
A person or thing regarded as a symbol of something, or a graphic symbol on a screen.
Example
The singer became a cultural icon.
Der Sänger wurde zu einer kulturellen Ikone.
C1 adjective ɪnˈdʒiː.ni.əs

ingenious

genial
Meaning
Showing inventiveness and skill; clever, original, and inventive.
Example
His ingenious ideas transformed modern physics.
Seine genialen Ideen verwandelten die moderne Physik.
C1 noun /ˌɪnklɪˈneɪʃən/

inclination

Neigung
Meaning
A natural tendency or urge to act or feel in a particular way.
Example
She has an inclination towards helping others.
Sie hat eine Neigung, anderen zu helfen.
C2 verb /ɪmˈpjuːn/

impugn

die Wahrheit, Gültigkeit oder Ehrlichkeit einer Aussage oder Absicht bestreiten
Meaning
to dispute the truth, validity, or honesty of a statement or motive
Example
The lawyer tried to impugn the credibility of the witness.
Der Anwalt versuchte, die Glaubwürdigkeit des Zeugen anzufechten.
C1 verb /ˌɪn.trəˈspekt/

introspect

introspektieren
Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
Er introspektiert oft, bevor er wichtige Entscheidungen trifft.
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.
C1 adjective /ˌɪn.dɪˈspen.sə.bəl/

indispensable

unverzichtbar
Meaning
Absolutely necessary, essential
Example
Water is indispensable for human survival.
Wasser ist für das Überleben des Menschen unverzichtbar.
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 noun /ˌɪmprɪˈmɑːtər/

imprimatur

Imprimatur
Meaning
An official license or approval, especially to publish a book.
Example
The book was released with the official imprimatur of the church.
Das Buch wurde mit dem offiziellen Imprimatur der Kirche veröffentlicht.
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.
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.
C1 noun /ɪmˈprɪzənmənt/

imprisonment

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

introspection

Introspektion
Meaning
The examination or observation of one's own mental and emotional processes; self-reflection.
Example
Through introspection, she gained insight into her emotions.
Durch Introspektion gewann sie tiefere Einblicke in ihre Emotionen.
C2 adjective /ˌɪnsəˈprɛsəbl/

insuppressible

unaufhaltsam
Meaning
That cannot be suppressed or restrained.
Example
She had an insuppressible urge to laugh during the ceremony.
Sie hatte einen unaufhaltsamen Drang zu lachen während der Zeremonie.
B2 adjective /ˈɪɡ.nər.ənt/

Ignorant

ignorant
Meaning
lacking knowledge or awareness; uninformed
Example
She was ignorant about the new technology trends.
Sie war ignorant gegenüber den neuen Technologietrends.
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 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.
C2 adjective /ɪˈlɪmɪtəbl/

illimitable

unermesslich
Meaning
Without limits or bounds.
Example
The universe is often described as illimitable.
Das Universum wird oft als unermesslich beschrieben.
B2 adjective /ɪnˈtriːɡɪŋ/

intriguing

sehr interessant und ungewöhnlich; weckt Neugier
Meaning
very interesting and unusual; arousing curiosity
Example
The movie has an intriguing plot that keeps the audience hooked.
Der Film hat eine interessante Handlung, die das Publikum fesselt.
C1 adjective /ɪnˈsɒlvənt/

insolvent

zahlungsunfähig
Meaning
unable to pay debts owed
Example
The insolvent firm could not meet its financial obligations.
Das zahlungsunfähige Unternehmen konnte seinen finanziellen Verpflichtungen nicht nachkommen.
B2 adjective ˈaɪsəˌleɪtɪd

isolated

isoliert
Meaning
Alone or separated from others; having little or no contact with other people.
Example
Technological advancements often leave people isolated.
Technologische Fortschritte führen oft dazu, dass Menschen isoliert werden.
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 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.
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.
C1 noun ˌɪrɪˈvɜːrsəbl ˈdæmɪdʒ

irreversible damage

unwiederbringlicher Schaden
Meaning
Harm or injury that cannot be undone or repaired.
Example
Climate change causes irreversible damage to ecosystems.
Der Klimawandel verursacht unwiederbringlichen Schaden an Ökosystemen.
C1 adverb ɪnˈtrɪn.zɪ.kli

intrinsically

intrinsisch
Meaning
In a way that is naturally or inherently part of something's essential nature.
Example
Some people are intrinsically motivated to learn.
Einige Menschen sind intrinsisch motiviert zu lernen.
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 verb /ɪmˈpiːd/

impede

behindern
Meaning
To obstruct or hinder the progress or development of something.
Example
Lack of funds can impede business growth.
Mangel an Mitteln kann das Wachstum von Unternehmen behindern.
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?
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.
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 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.
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.
C2 adjective /ˈɪndələnt/

indolent

träge
Meaning
Wanting to avoid activity or exertion; lazy.
Example
The indolent cat slept in the sun all afternoon.
Die träge Katze schlief den ganzen Nachmittag in der Sonne.
C1 adjective /ɪnˈsɪdiəs/

insidious

heimtückisch
Meaning
Proceeding in a gradual, subtle way but with harmful effects.
Example
The insidious spread of misinformation can damage trust.
Die heimtückische Verbreitung von Fehlinformationen kann das Vertrauen schädigen.
C1 adjective /ˈɪnərmoʊst/

Innermost

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

impenetrable

Meaning
Impossible to pass through or enter; impossible to understand.
Example
The dense forest was nearly impenetrable.
C2 verb /ˈɪndjʊˌreɪt/

indurate

verhärten
Meaning
To harden or make something physically or emotionally tough.
Example
Years of hardship indurated his spirit.
Jahre der Schwierigkeiten härteten seinen Geist.
C2 noun /ɪmˈpʌlʃən/

impulsion

Impuls
Meaning
a strong urge or drive to act; the act of impelling
Example
His impulsion to travel made him leave his job suddenly.
Sein Impuls, zu reisen, veranlasste ihn dazu, seinen Job plötzlich zu kündigen.
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.
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 /ɪnˈsɒm.ni.ə/

Insomnia

Insomnie
Meaning
habitual sleeplessness; inability to sleep; the condition of being unable to sleep
Example
Her chronic insomnia made it difficult for her to concentrate during work hours.
Ihre chronische Insomnie erschwerte es ihr, sich während der Arbeitszeit zu konzentrieren.
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.
C2 noun /ˈɪn.fɪ.del/

Infidel

Heiden
Meaning
a person who does not believe in religion or whose religious beliefs differ from one's own
Example
In historical contexts, crusaders often referred to their enemies as infidels.
In historischen Kontexten bezeichneten Kreuzfahrer ihre Feinde oft als Heiden.
C2 verb /ɪˈnjʊər/

inure

gewöhnen
Meaning
To become accustomed to something, especially something unpleasant.
Example
Soldiers quickly became inured to the harsh conditions.
Soldaten gewöhnten sich schnell an die harten Bedingungen.
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.
C1 adjective /ɪmˈpjʊər/

Impure

unrein
Meaning
contaminated; not clean; mixed with foreign substances
Example
The impure water caused health problems in the village.
Das unreine Wasser verursachte Gesundheitsprobleme im Dorf.
C1 verb /ˈɪnsjuleɪt/

insulate

isolieren
Meaning
To protect something by covering it, especially to prevent heat, sound, or electricity from escaping or entering.
Example
The house was insulated to reduce heating costs.
Das Haus wurde isoliert, um die Heizkosten zu senken.
C2 verb /ˈɪmprɛɡneɪt/

impregnate

durchtränken / schwängern
Meaning
To make pregnant; to fill or saturate with something.
Example
The scientist used a method to impregnate the material with resin.
Der Wissenschaftler verwendete eine Methode, um das Material mit Harz zu imprägnieren.
C2 verb /ɪnˈdaɪt/

indite

verfassen
Meaning
To write or compose (literary or formal works).
Example
The poet indited a heartfelt sonnet.
Der Dichter verfasste ein aufrichtiges Sonett.
B2 verb /ɪmˈpoʊzd/

imposed

auferlegt
Meaning
forced something to be accepted or put in place
Example
The government imposed new regulations on the industry.
Die Regierung hat neue Vorschriften für die Industrie erlassen.
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.
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.
B2 adverb /ˌɪndəˈrɛktli/

indirectly

indirekt
Meaning
in a way that is not direct; through an intermediate means or influence
Example
The policy affected small businesses indirectly.
Die Politik beeinflusste kleine Unternehmen indirekt.
C1 adjective /ɪnˈdɪɡnənt/

indignant

empört
Meaning
Feeling or showing anger at something considered unfair or unjust.
Example
She was indignant when accused of cheating.
Sie war empört, als sie des Schummelns beschuldigt wurde.
C2 adjective /ɪnˈkɒrɪdʒəbəl/

incorrigible

unverbesserlich
Meaning
incapable of being corrected, improved, or reformed
Example
He is an incorrigible optimist who never loses hope.
Er ist ein unverbesserlicher Optimist, der niemals die Hoffnung verliert.
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.
C2 noun /ɪnˈkwɪzɪtər/

inquisitor

Inquisitor
Meaning
A person who asks many questions, often in an official or harsh manner.
Example
The inquisitor demanded detailed answers from the witness.
Der Inquisitor forderte detaillierte Antworten vom Zeugen.
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 /ɪmˈpɪəriəs/

imperious

imperiös
Meaning
Arrogantly domineering or overbearing.
Example
Her imperious tone made it hard for others to argue.
Ihr imperiöser Ton machte es anderen schwer, zu argumentieren.
C1 adjective ˌɪn.tə.dʒen.əˈreɪ.ʃən.əl

intergenerational

intergenerationell, zwischen verschiedenen Generationen einer Familie
Meaning
Existing or occurring between different generations of a family.
Example
Intergenerational wisdom ensures cultural continuity.
Intergenerationelles Wissen sichert kulturelle Kontinuität.
C2 adjective /ɪnˈvɪdiəs/

invidious

missgünstig
Meaning
likely to arouse resentment, envy, or anger in others
Example
The manager's invidious remarks created tension among the employees.
Die missgünstigen Bemerkungen des Managers verursachten Spannungen unter den Mitarbeitern.
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.
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.
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.
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.
C1 adjective ˌɪn.trəˈspek.tɪv

introspective

introspektiv
Meaning
Characterized by or given to introspection; examining one's own thoughts and feelings.
Example
Writers tend to be highly introspective individuals.
Schriftsteller neigen dazu, hochgradig introspektive Individuen zu sein.
C2 noun /ˌɪntərpəˈzɪʃən/

interposition

Zwischenkunft
Meaning
The act of intervening or coming between two things, often to influence or prevent an outcome.
Example
The manager’s interposition prevented a heated argument from escalating.
Die Zwischenkunft des Managers verhinderte, dass sich ein hitziger Streit zuspitzte.
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; noun /ɪˈmɔːrtl/

immortal

unsterblich
Meaning
living forever; never dying; lasting forever in fame or memory
Example
Legends often describe heroes as immortal beings who never die.
Mythen sprechen von unsterblichen Wesen.
C1 noun ˌɪnfrəˈstrʌktʃərəl dɪˈveləpmənt

infrastructural development

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

itinerary

Reiseroute
Meaning
A planned route or schedule of a journey or trip.
Example
The travel agent gave us a detailed itinerary for our vacation.
Der Reiseveranstalter gab uns einen detaillierten Reiseplan für unseren Urlaub.
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 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.
B2 adjective /ˈaɪ.dəl/

Idle

faul; inaktiv; nicht arbeitend
Meaning
lazy; inactive; not working or being used
Example
The factory workers were idle during the strike.
Die Fabrikarbeiter waren während des Streiks inaktiv.
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 /ɪnˈvɛntɪv/

inventive

erfinderisch
Meaning
Having the ability to create or design new things or to think originally.
Example
The inventor was known for his inventive solutions to everyday problems.
Der Erfinder war bekannt für seine erfinderischen Lösungen für alltägliche Probleme.
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.
B2 verb /ɪnˈheɪl/

inhale

einatmen
Meaning
to breathe in; to draw air into the lungs
Example
Take a deep breath and inhale slowly.
Nehmen Sie einen tiefen Atemzug und atmen Sie langsam ein.
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.
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.
C2 adjective /ɪnˈɡlɔːriəs/

inglorious

ehrenlos
Meaning
Causing shame or disgrace; not bringing honor or glory.
Example
The army suffered an inglorious defeat.
Die Armee erlitt eine ehrenlose Niederlage.
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 /aɪˈdɒlətrəs/

idolatrous

idolatär
Meaning
Excessively admiring or worshipping someone or something as an idol.
Example
The king was criticized for his idolatrous devotion to wealth.
Der König wurde wegen seiner idolatären Hingabe an den Reichtum kritisiert.
B2 adverb /ɪmˈpɒlɪtli/

impolitely

unhöflich
Meaning
in a rude or discourteous manner; without showing respect or proper manners
Example
He spoke impolitely to the waiter despite the polite service.
Er sprach unhöflich mit dem Kellner trotz des guten Services.
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.
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.
B2 noun /ɪnˈsɪstəns/

insistence

Insistenz
Meaning
the act of demanding something firmly or repeatedly
Example
At his insistence, we stayed longer.
Auf seine Insistenz hin blieben wir länger.
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 noun /ɪnˌtɪmɪˈdeɪʃən/

intimidation

Einschüchterung
Meaning
The action of frightening or threatening someone to make them do something.
Example
The workers reported cases of intimidation by the management.
Die Arbeiter berichteten über Fälle von Einschüchterung durch das Management.
C1 adjective /ɪˈneɪn/

inane

unsinnig, dumm
Meaning
lacking sense, meaning, or significance; silly or pointless
Example
The movie was criticized for its inane dialogue.
Der Film wurde für seine unsinnigen Dialoge kritisiert.
C2 noun /ˌɪn.ʌnˈdeɪ.ʃən/

inundation

Überschwemmung
Meaning
The act of flooding or overwhelming with water or things.
Example
The town suffered from a severe inundation after the heavy rains.
Die Stadt litt unter einer schweren Überschwemmung nach den starken Regenfällen.
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.
B1 adjective /ɪˈnɪʃəl/

initial

anfänglich
Meaning
Existing or occurring at the beginning.
Example
Her initial reaction was one of surprise.
Ihre anfängliche Reaktion war eine Überraschung.
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.
A1 adjective /ˈɪntrəstɪŋ/ or /ˈɪntəˌrɛstɪŋ/

interesting

interessant
Meaning
Arousing curiosity or attention; holding one’s interest.
Example
The documentary about space was very interesting.
Die Dokumentation über den Weltraum war sehr interessant.
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.
A1 preposition /ɪn ˈfrʌnt əv/

in front of

vor
Meaning
positioned before or ahead of something; facing or located at the forward side of a person or object
Example
She stood in front of the building.
Sie stand vor dem Gebäude.
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 adjective /ˌɪnkəmˈbʌstəbl/

incombustible

nicht brennbar
Meaning
Not capable of catching fire or burning.
Example
This material is incombustible and safe for construction.
Dieses Material ist incombustibel und sicher für den Bau.