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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.
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 verb /ɪmˈpɛl/

impel

bewegen
Meaning
to drive, force, or urge someone to do something
Example
Her curiosity impelled her to open the mysterious box.
Ihre Neugier trieb sie dazu, die mysteriöse Kiste zu öffnen.
C1 adjective /aɪˈdɪlɪk/

idyllic

idyllisch und schön
Meaning
Like an idyll; extremely happy, peaceful, or picturesque.
Example
They enjoyed an idyllic vacation by the sea.
Sie genossen einen idyllischen Urlaub am Meer.
C2 noun /ˈaɪ.səˌbɑːr/

isobar

Isobar
Meaning
A line on a weather map connecting points of equal atmospheric pressure.
Example
The meteorologist explained how isobars indicate wind speed and direction.
Der Meteorologe erklärte, wie Isobaren die Windgeschwindigkeit und -richtung anzeigen.
B1 verb /ɪnˈvɛnt/

invent

erfinden
Meaning
to create or design something that has not existed before
Example
Thomas Edison invented the electric bulb.
Thomas Edison erfand die elektrische Glühbirne.
C1 noun /ˌɪn.səˌbɔːr.dɪˈneɪ.ʃən/

insubordination

Ungehorsam
Meaning
Defiance of authority; refusal to obey orders.
Example
The soldier was punished for insubordination during the mission.
Der Soldat wurde für Ungehorsam während der Mission bestraft.
C2 adjective /ɪnˈseɪʃiət/

insatiate

unstillbar
Meaning
impossible to satisfy; always wanting more
Example
He had an insatiate desire for power.
Er hatte ein unstillbares Verlangen nach Macht.
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.
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.
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 ˌɪn.stəˈleɪ.ʃən

installation

Installation
Meaning
The action or process of installing someone or something, or of being installed.
Example
The installation of the submarine cable is almost complete.
Die Installation des Unterseekabels ist fast abgeschlossen.
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 noun /ɪnˈhɛrɪtər/

inheritor

Erbe
Meaning
a person who receives money, property, or a title when someone dies
Example
She became the inheritor of her family's estate.
Sie wurde die Erbin des Familienvermögens.
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 noun /ˌɪnflɛksɪˈbɪlɪti/

inflexibility

Unflexibilität
Meaning
the quality of being rigid or unwilling to change; lack of adaptability
Example
The inflexibility of the rules caused unnecessary delays.
Die Unflexibilität der Regeln verursachte unnötige Verzögerungen.
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 /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 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.
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.
C1 adjective /ˌɪnkənˈsiːvəbl̩/

inconceivable

unvorstellbar
Meaning
Impossible to imagine or believe; beyond comprehension.
Example
It seemed inconceivable that she could finish the marathon after such little training.
Es schien unvorstellbar, dass sie den Marathon nach so wenig Training beenden könnte.
B2 verb /ɪnˈfɜːr/

infer

schließen
Meaning
to conclude or deduce something from evidence and reasoning rather than from explicit statements
Example
From his silence, I inferred that he was not happy with the decision.
Aus seiner Stille schloss ich, dass er mit der Entscheidung nicht zufrieden war.
C1 noun ˈɪn.fər.əns

inference

Schlussfolgerung
Meaning
A conclusion reached on the basis of evidence and reasoning; logical deduction.
Example
Scientists make inferences based on experimental data.
Wissenschaftler ziehen Schlussfolgerungen basierend auf experimentellen Daten.
C1 adjective /ɪnˈvɪnsəbl/

invincible

unbesiegbar
Meaning
too powerful to be defeated or overcome
Example
The team seemed invincible after winning ten matches in a row.
Das Team schien unbesiegbar, nachdem es zehn Spiele hintereinander gewonnen hatte.
C2 verb /ɪnˈveɪɡəl/

inveigle

verführen
Meaning
To persuade someone to do something by deception or flattery.
Example
She inveigled him into signing the contract.
Sie überredete ihn, den Vertrag zu unterschreiben.
C1 adjective /ɪmˈprɒmp.tjuː/

impromptu

spontan
Meaning
Done without being planned, organized, or rehearsed; spontaneous.
Example
He gave an impromptu speech at the event.
Er hielt eine spontane Rede bei der Veranstaltung.
B1 adjective /ɪˈmiːdiət/

immediate

sofort
Meaning
happening or done without delay
Example
The doctor gave her immediate attention.
Der Arzt gab ihr sofortige Aufmerksamkeit.
C1 adjective /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.
C1 verb /ɪɡˈnaɪt/

ignite

entzünden
Meaning
To catch fire or cause to catch fire; to start or arouse.
Example
The sparks ignited the dry leaves in seconds.
Die Funken entzündeten die trockenen Blätter in Sekunden.
C2 adverb /ˈaɪsɪli/

icily

kalt
Meaning
In a very cold, unfriendly, or hostile manner.
Example
She replied icily to his question.
Sie antwortete kalt auf seine Frage.
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.
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.
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.
C2 verb /ɪnˈveɪ/

inveigh

heftig kritisieren
Meaning
To speak or write about something with great hostility and criticism.
Example
He inveighed against the corruption in government.
Er kritisierte heftig die Korruption in der Regierung.
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 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 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.
C2 noun /ˌɪnkænˈdɛsəns/

incandescence

Infrarotstrahlung
Meaning
the emission of light from a hot object; brilliance
Example
The incandescence of the candle filled the dark room.
Die Infrarotstrahlung der Kerze füllte den dunklen Raum.
C1 noun/verb /ˈɪmprɪnt/

imprint

Prägung
Meaning
A mark or impression made by pressure; to establish or fix firmly in someone's mind.
Example
The event left an indelible imprint on the city's history.
Das Ereignis hinterließ eine unauslöschliche Prägung in der Geschichte der Stadt.
C2 adjective /ˌɪnɔːˈspɪʃəs/

Inauspicious

unglücklich
Meaning
unlucky; showing signs that future success is unlikely; unfavorable
Example
The dark clouds seemed inauspicious for the wedding.
Die dunklen Wolken schienen für die Hochzeit ungünstig.
A1 pronoun /aɪ/

i

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

indictment

Anklageschrift
Meaning
a formal charge or accusation of a serious crime
Example
The indictment accused the company of multiple violations.
Die Anklageschrift beschuldigte das Unternehmen mehrfacher Verstöße.
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.
C1 adjective /ɪmˈpæsɪv/

impassive

passiv
Meaning
Not showing or feeling emotion; expressionless.
Example
Despite the shocking news, she remained impassive.
Trotz der schockierenden Nachrichten blieb sie passiv.
C1 verb /ɪnˈtɪmɪdeɪt/

intimidate

einschüchtern
Meaning
To frighten or overawe someone, especially to make them do what one wants.
Example
The bully tried to intimidate the smaller kids.
Der Tyrann versuchte, die kleineren Kinder einzuschüchtern.
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.
C2 adjective /ɪnˈsɪpɪd/

insipid

geschmacklos
Meaning
lacking flavor, interest, or excitement; dull
Example
The soup was insipid and needed more seasoning.
Die Suppe war geschmacklos und brauchte mehr Gewürze.
B2 adjective /ˈɪrɪteɪtɪd/

irritated

gereizt
Meaning
feeling annoyed or impatient; having inflamed or sore physical condition
Example
She felt irritated by the constant noise outside her window.
Sie war durch den ständigen Lärm gereizt.
C1 noun /ɪnˌkɑːsəˈreɪʃən/

incarceration

Inhaftierung
Meaning
the state of being imprisoned or confined
Example
The criminal faced years of incarceration for his crimes.
Der Kriminelle verbrachte Jahre der Inhaftierung für seine Verbrechen.
C1 noun /ɪmˈpɛd.ɪ.mənt/

impediment

Hindernis
Meaning
A hindrance or obstruction in doing something; something that prevents progress.
Example
Lack of funds is a major impediment to the project.
Der Mangel an Mitteln ist ein großes Hindernis für das Projekt.
B2 adjective /ɪnˈfɪə.ri.ər/

inferior

minderwertig
Meaning
Of lower quality, rank, or status.
Example
This material is inferior to the one we used before.
Dieses Material ist minderwertiger als das, das wir vorher verwendet haben.
C1 verb /ɪmˈpɑːrt/

impart

vermitteln
Meaning
to make information known; to bestow or communicate
Example
The teacher imparted valuable knowledge to her students.
Der Lehrer vermittelte wertvolles Wissen an seine Schüler.
C1 noun /ˌɪnɪkˈspɪəriəns/

inexperience

Unerfahrenheit
Meaning
Lack of knowledge or skill in a particular activity or field.
Example
His inexperience in handling negotiations was evident.
Seine Unerfahrenheit im Umgang mit Verhandlungen war offensichtlich.
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.
C1 adjective /ˌɪndɪˈstɪŋkt/

indistinct

undeutlich
Meaning
Not clear or sharply defined; vague or blurred.
Example
The sound of voices was indistinct in the distance.
Der Klang der Stimmen war in der Ferne undeutlich.
C1 adjective /ɪnˈkɒmpɪtənt/

incompetent

inkompetent
Meaning
Lacking the necessary ability or skills to do something successfully.
Example
He was fired because he was incompetent at his job.
Er wurde entlassen, weil er in seinem Job unfähig war.
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 noun /ɪnˈsɜːʃən/

insertion

Einfügung
Meaning
the action of inserting something into something else
Example
The insertion of the new data was completed successfully.
Die Einfügung der neuen Daten wurde erfolgreich abgeschlossen.
B1 noun /ɪnˈɡriːdiənt/

ingredient

Zutat
Meaning
A component part or element of something, especially in a recipe.
Example
Flour is a key ingredient in baking bread.
Mehl ist eine wichtige Zutat beim Brotbacken.
A2 adverb /ɪnˈstɛd/

instead

anstatt
Meaning
As an alternative or substitute.
Example
She didn’t buy the dress; instead, she chose a pair of shoes.
Sie hat das Kleid nicht gekauft; stattdessen hat sie ein Paar Schuhe gewählt.
C1 noun /ˈɪd.i.əm/

idiom

Idiom
Meaning
A group of words whose meaning is different from the meanings of the individual words.
Example
The idiom 'break the ice' means to start a conversation in a friendly way.
Das Idiom 'Eis brechen' bedeutet, ein Gespräch auf freundliche Weise zu beginnen.
C1 adjective /ɪˈnuːmərəbəl/

Innumerable

unzählbar; unzählige; unendlich
Meaning
too many to be counted; countless; infinite in number
Example
There are innumerable stars in the night sky that we cannot see with our naked eyes.
Es gibt unzählige Sterne am Nachthimmel, die wir mit bloßem Auge nicht sehen können.
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.
A2 noun /ˌɪnvɪˈteɪʃən/

invitation

Glück
Meaning
a written or spoken request to attend an event or to participate in something
Example
She sent me an invitation to her wedding.
Sie konnte ihr Glück nicht verbergen, als sie den Preis erhielt.
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.
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.
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 ˌɪnɪˈfɛktɪv

ineffective

ineffektiv
Meaning
Not producing any significant or desired effect; not achieving the intended result.
Example
Rote learning often proves to be ineffective.
Auswendiglernen erweist sich oft als ineffektiv.
C1 adjective /ɪnˈkɒŋɡruəs/

incongruous

inkongruent
Meaning
Not fitting in with or suitable for the surroundings.
Example
His jokes were incongruous during the serious meeting.
Seine Witze waren inkongruent während des ernsten Treffens.
B2 noun /ˈɪn.vɔɪs/

Invoice

Rechnung
Meaning
a list of goods sent or services provided, with a statement of the sum due for these
Example
The company sent an invoice for the office supplies delivered last week.
Das Unternehmen schickte eine Rechnung für die letzte Woche gelieferten Bürobedarf.
B2 noun ˈɪndɪkeɪtə

indicator

indikator
Meaning
A thing that indicates the state or level of something.
Example
The unemployment rate is a key indicator of economic health.
Die Arbeitslosenquote ist ein wichtiger Indikator für die wirtschaftliche Gesundheit.
C2 adjective /ˌɪnkænˈdɛsənt/

incandescent

glühend
Meaning
emitting light as a result of being heated; extremely bright or passionate
Example
The incandescent lamp lit up the entire hall.
Die glühende Lampe erleuchtete den gesamten Raum.
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.
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 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.
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 /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 /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.
B2 adjective /ˈaɪsi/

Icy

eisig; extrem kalt; feindlich
Meaning
extremely cold; covered with ice; unfriendly or hostile
Example
The icy wind made everyone shiver.
Der eisige Wind ließ alle zittern.
C1 noun /ˌɪntərˈmiːdiˌɛri/

intermediary

Vermittler
Meaning
A person who acts as a link between people in order to try to bring about an agreement; a mediator.
Example
The diplomat served as an intermediary between the two conflicting nations.
Der Diplomat fungierte als Vermittler zwischen den beiden konfliktierenden Nationen.
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.
C1 noun /ˌɪnækˈtɪvɪti/

inactivity

Inaktivität
Meaning
the state of not being active physically or mentally; lack of action
Example
Prolonged inactivity can negatively affect both physical and mental health.
Längere Inaktivität kann die körperliche und geistige Gesundheit beeinträchtigen.
C1 verb /ɪnˈdaɪt/

indict

anklagen
Meaning
to formally accuse someone of committing a serious crime
Example
The grand jury decided to indict the politician for corruption.
Das Großgericht entschied, den Politiker wegen Korruption anzuklagen.
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.
C1 adjective /ɪˈnɛpt/

inept

ungeschickt
Meaning
lacking skill or ability; clumsy or incompetent
Example
His inept handling of the situation made it worse.
Sein ungeschicktes Handling der Situation machte sie schlimmer.
C1 verb /ˈɪmprəvaɪz/

improvise

improvisieren
Meaning
To create or perform something spontaneously without preparation.
Example
The actor had to improvise his lines when he forgot the script.
Der Schauspieler musste seine Zeilen improvisieren, als er das Skript vergessen hatte.
C2 noun /ˈɪndɪkənt/

indicant

anzeiger
Meaning
Something that indicates or points to a fact or condition.
Example
High fever is often an indicant of infection.
Hoher Fieber ist oft ein Anzeiger für eine Infektion.
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.
C2 adjective /ɪˈlɪbərəl/

illiberal

illiberal
Meaning
Opposed to liberal principles; restricting freedom of thought or behavior.
Example
The government was criticized for its illiberal policies.
Die Regierung wurde für ihre illiberalen Politiken kritisiert.
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.
C2 adjective /ɪˈrædɪkəbəl/

irradicable

irradikabel
Meaning
not able to be eradicated; impossible to destroy or remove completely
Example
The love of a mother for her child is irradicable.
Die Liebe einer Mutter zu ihrem Kind ist irradikabel.
C2 adjective /ˌɪnɪˈsɛnʃəl/

inessential

unwesentlich
Meaning
not necessary or important; not essential
Example
The report removes all inessential details to stay focused.
Der Bericht entfernt alle unwesentlichen Details, um fokussiert zu bleiben.
C1 verb /ɪnˈterəˌɡeɪt/

interrogate

verhören
Meaning
to ask someone questions in a thorough and formal way; to question intensively
Example
The police interrogated the suspect for hours.
Die Polizei hat den Verdächtigen stundenlang verhört.
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.
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.
B2 adverb /ɪmˈpeɪʃəntli/

impatiently

ungeduldig
Meaning
in a manner showing annoyance or restlessness due to delay or waiting
Example
She tapped her fingers impatiently while waiting for the reply.
Sie klopfte ungeduldig mit den Fingern, während sie auf die Antwort wartete.
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 noun /aɪˈdɒlətri/

idolatry

Götzenverehrung
Meaning
The worship of idols or extreme admiration for someone or something.
Example
The priest condemned the idolatry practiced in the village.
Der Priester verurteilte die im Dorf praktizierte Götzenverehrung.
C2 adjective /ɪnˈkoʊətɪv/

inchoative

incipient
Meaning
relating to the beginning of something; in an initial stage
Example
The poet used inchoative expressions to depict the dawn of creation.
Der Dichter benutzte inchoative Ausdrücke, um den Beginn der Schöpfung darzustellen.
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.
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.
B2 verb /ɪnˈʃʊər/

insure

versichern
Meaning
to provide insurance; to make certain
Example
I need to insure my new car.
Ich muss mein neues Auto versichern.
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.
B2 verb /ɪnˈtriːɡ/

intrigue

intrigieren
Meaning
to arouse curiosity or interest; to make someone fascinated
Example
The mystery novel will intrigue any reader.
Der Mystery-Roman wird jeden Leser faszinieren.
C1 adjective /ɪnˈdʌstriəs/

industrious

fleißig
Meaning
Hardworking and diligent in one's duties.
Example
She is an industrious student who always completes her assignments on time.
Sie ist eine fleißige Studentin, die immer ihre Aufgaben rechtzeitig erledigt.
C2 noun /ɪˈluːmɪnənt/

illuminant

Beleuchtung
Meaning
A substance or device that produces light.
Example
The lamp acted as an illuminant in the dark cave.
Die Lampe fungierte als Beleuchtung in der dunklen Höhle.
C1 adjective /ɪnˈdʒʊəriəs/

injurious

schädlich
Meaning
Causing or likely to cause harm or damage.
Example
Smoking is injurious to health.
Rauchen ist schädlich für die Gesundheit.
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.
C1 adjective /ˈɪrɪtəbl/

irritable

reizbar
Meaning
easily annoyed or made angry
Example
She became irritable after working long hours without rest.
Sie wurde reizbar, nachdem sie lange Stunden ohne Ruhe gearbeitet hatte.
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.
C1 adjective /ˌɪnədˈvaɪzəbl/

inadvisable

nicht ratsam
Meaning
Not recommended; likely to have undesirable consequences.
Example
It is inadvisable to drive in such heavy rain.
Es ist nicht ratsam, bei solchem starken Regen zu fahren.
C2 adjective /ˌɪndɪˈvɜːrtɪbəl/

indivertible

unablenkbar
Meaning
Not able to be turned aside or diverted.
Example
The judge's indivertible attention was on the case.
Die unablenkbare Aufmerksamkeit des Richters war auf den Fall gerichtet.
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 /ˌɪmpərˈfɛkʃən/

imperfection

Unvollkommenheit
Meaning
a flaw, defect, or weakness; the state of being imperfect
Example
She accepted her imperfection as part of being human.
Sie akzeptierte ihre Unvollkommenheit als Teil des Menschseins.
C1 adverb /ˌɪn.dɪˈskrɪm.ɪ.nət.li/

Indiscriminately

indiskriminierend
Meaning
without making careful distinctions; randomly; without discrimination
Example
The company fired employees indiscriminately without considering their performance.
Das Unternehmen entließ die Mitarbeiter ohne Rücksicht auf ihre Leistung.
C1 noun /ɪnˈdɪɡ.nə.ti/

Indignity

Indignität; Demütigung; Erniedrigung;
Meaning
treatment or circumstances that cause one to feel shame or loss of dignity; humiliation
Example
She refused to suffer the indignity of being searched without proper cause.
Sie weigerte sich, die Indignität zu ertragen, ohne einen triftigen Grund durchsucht zu werden.
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 /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 adjective /ɪˈmɪsəbl/

immiscible

unlöslich
Meaning
Describes liquids that do not mix together.
Example
Oil and water are immiscible liquids.
Öl und Wasser sind unlösliche Flüssigkeiten.
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.
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.