islet
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C2 noun /ˈaɪ.lət/

islet

îlot
Meaning
A very small island.
Example
The fishermen rested on a tiny islet before continuing their journey.
Les pêcheurs se sont reposés sur un petit îlot avant de continuer leur voyage.
A1 preposition/adverb/adjective/noun /ˌɪnˈsaɪd/

inside

bonheur
Meaning
Situated within something; the inner part of something.
Example
She waited inside the house until the rain stopped.
Elle ne pouvait pas cacher son bonheur quand elle a reçu le prix.
C2 adjective /ˌɪnˈekspɜːrt/

inexpert

inexpérimenté
Meaning
not skilled or experienced; lacking expertise
Example
The inexpert handling of the machine caused several mistakes.
La manipulation inexpérimentée de la machine a causé plusieurs erreurs.
C1 adjective /ɪnˈɡreɪnd/

ingrained

enraciné
Meaning
Firmly fixed or established; deeply rooted and difficult to change.
Example
His ingrained habits were hard to break.
Ses habitudes enracinées étaient difficiles à briser.
B2 adjective /ˌɪnstɪˈtjuːʃənl/

institutional

institutionnel
Meaning
Relating to an organization or established practice.
Example
The government made several institutional reforms in education.
Le gouvernement a mis en œuvre plusieurs réformes institutionnelles dans l'éducation.
C1 adjective ɪnˈtrɪn.zɪk

intrinsic

intrinsèque, essentiel, naturel
Meaning
Belonging naturally; essential. Existing as a natural or basic part of something.
Example
Creativity is an intrinsic quality of a great artist.
La créativité est une qualité intrinsèque d'un grand artiste.
B2 adjective /ɪˈrɛləvənt/

Irrelevant

irrélévant
Meaning
not connected with or relevant to something; having no bearing on the matter
Example
Your past mistakes are irrelevant to this discussion.
Vos erreurs passées sont irrélévantes pour cette discussion.
C1 adjective /ɪnˈæk.tɪv/

Inactive

inactif
Meaning
not active; not working; dormant; idle
Example
The volcano has been inactive for over a century.
Le volcan est inactif depuis plus d'un siecle.
B2 adjective/noun /ɪˈrɑːki/

iraqi

irakien
Meaning
relating to Iraq or its people
Example
The Iraqi culture is rich and diverse.
La culture irakienne est riche et diversifiée.
B2 noun /ˈɪɡ.nər.əns/

Ignorance

ignorance
Meaning
lack of knowledge or information; the state of being uninformed about something
Example
His ignorance about basic computer skills made it difficult for him to find a job.
Son ignorance des compétences informatiques de base a rendu difficile pour lui de trouver un emploi.
A2 adjective /ˈɪntrəstɪd/

interested

intéressé
Meaning
Showing curiosity or concern about something.
Example
She is very interested in learning new languages.
Elle est très intéressée par l'apprentissage de nouvelles langues.
C1 verb /ˌɪntərˈsɛpt/

intercept

Meaning
to stop, catch, or seize something on its way from one place to another
Example
The police intercepted the stolen car before it crossed the border.
C2 adjective /ˌɪndɪˈvɜːrtɪbəl/

indivertible

indivertible
Meaning
Not able to be turned aside or diverted.
Example
The judge's indivertible attention was on the case.
L'attention indivertible du juge était sur l'affaire.
A2 noun, verb /ˈɪʃuː/

issue

problème, publication, distribution
Meaning
A problem, topic, or the act of supplying or distributing something.
Example
The magazine will issue a new edition next week.
Le magazine publiera une nouvelle édition la semaine prochaine.
C2 verb /ɪnˈsteɪt/

instate

installer
Meaning
To set up in position, office, or authority.
Example
The board decided to instate her as the new director.
Le conseil a décidé de l'instaurer en tant que nouveau directeur.
C2 adjective /ˌɪrɪˈmiːdiəbl̩/

irremediable

irrémédiable
Meaning
Impossible to cure, repair, or remedy.
Example
The damage to the ancient manuscript was irremediable.
Les dommages au manuscrit ancien étaient irrémédiables.
C2 noun /aɪˈdɒlətri/

idolatry

idolâtrie
Meaning
The worship of idols or extreme admiration for someone or something.
Example
The priest condemned the idolatry practiced in the village.
Le prêtre a condamné l'idolâtrie pratiquée dans le village.
C1 adjective /ˌɪrɪˈvɜːrsəbl/

irreversible

irréversible
Meaning
Not able to be undone, changed, or reversed.
Example
The damage caused by the fire was irreversible.
Les dommages causés par le feu étaient irréversibles.
A2 adverb /ɪnˈstɛd/

instead

à la place de
Meaning
As an alternative or substitute.
Example
She didn’t buy the dress; instead, she chose a pair of shoes.
Elle n'a pas acheté la robe; à la place, elle a choisi une paire de chaussures.
C1 verb /ɪnˈstɪl/

instill

instiller
Meaning
to gradually but firmly establish an idea, attitude, or habit in someone's mind
Example
Parents try to instill good values in their children.
Les parents essaient d'inculquer de bonnes valeurs à leurs enfants.
C1 verb /ɪˈmɔːrtəlaɪz/

immortalize

immortaliser
Meaning
to preserve the memory of someone or something forever
Example
The statue was built to immortalize the hero’s sacrifice.
La statue a été construite pour immortaliser le sacrifice du héros.
B2 adjective /ɪˈrɪˌspɑn.sə.bəl/

Irresponsible

irresponsable
Meaning
lacking a sense of responsibility; careless
Example
It was irresponsible of him to leave without telling anyone.
C'était irresponsable de sa part de partir sans prévenir personne.
C1 adjective /aɪˈdɪlɪk/

idyllic

idyllique et magnifique
Meaning
Like an idyll; extremely happy, peaceful, or picturesque.
Example
They enjoyed an idyllic vacation by the sea.
Ils ont apprécié des vacances idylliques au bord de la mer.
C1 adjective /ˌɪn.səbˈstæn.ʃəl/

insubstantial

insubstantiel
Meaning
Lacking strength, substance, or solidity.
Example
The evidence provided was insubstantial and unconvincing.
Les preuves fournies étaient insubstantielles et non convaincantes.
C2 noun /ˈɪndɪkənt/

indicant

indicateur
Meaning
Something that indicates or points to a fact or condition.
Example
High fever is often an indicant of infection.
La fièvre élevée est souvent un indicateur d'infection.
C2 noun /ˈɪkθiəˌsɔːrz/

ichthyosaurs

ichtyosaures (un type de reptile marin éteint)
Meaning
Extinct marine reptiles that resembled fish and dolphins, dominant during the Mesozoic era.
Example
Ichthyosaurs were swift predators of the ancient seas.
Les ichtyosaures étaient des prédateurs rapides des mers anciennes.
B1 adjective /ɪmˈpruːvd/

improved

amélioré
Meaning
made better or enhanced in quality or condition
Example
Her health has significantly improved since last month.
Sa santé s'est considérablement améliorée depuis le mois dernier.
C1 verb /ɪmˈpɪndʒ/

impinge

affecter
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.
Le bruit du chantier impacte nos activités quotidiennes.
C1 adjective ˌɪdiəsɪnˈkrætɪk

idiosyncratic

particulier et individuel
Meaning
Relating to idiosyncrasy; peculiar or individual.
Example
His idiosyncratic behavior set him apart from his colleagues.
Son comportement idiosyncratique le distinguait de ses collègues.
C2 noun /ˌɪn.təˈvɛn.ʃə.nɪ.zəm/

interventionism

interventionnisme
Meaning
Government policy of active involvement in economic affairs.
Example
The central bank's interventionism helped stabilize inflation.
L'interventionnisme de la banque centrale a aidé à stabiliser l'inflation.
C1 verb /ɪnˈhɪbɪt/

inhibit

inhiber
Meaning
to prevent or restrain someone or something from acting freely; to hinder
Example
Fear can inhibit personal growth.
La peur peut inhiber la croissance personnelle.
C2 adjective ɪnˈdɒm.ɪ.tə.bəl

indomitable

indomptable
Meaning
Impossible to subdue or defeat.
Example
Her indomitable spirit helped her overcome adversity.
Son esprit indomptable l'a aidée à surmonter l'adversité.
B1 adjective /ɪˈnɪʃəl/

initial

initial
Meaning
Existing or occurring at the beginning.
Example
Her initial reaction was one of surprise.
Sa réaction initiale fut une surprise.
C1 noun /ˌɪntərˈdʒɛkʃən/

interjection

interjection
Meaning
a word or phrase used to express sudden emotion or reaction, often standing alone
Example
Words like 'wow' and 'ouch' are common interjections in English.
Des mots comme 'wow' et 'aïe' sont des interjections courantes en anglais.
C2 adjective /ɪnˈdʒɛnjuəs/

ingenuous

ingénu
Meaning
Innocent, naive, and unsuspecting; showing childlike simplicity and sincerity.
Example
Her ingenuous smile revealed her genuine kindness.
Son sourire ingénu révélait sa véritable gentillesse.
C2 adjective /ɪɡˈnoʊ.bəl/

Ignoble

ignoble; méprisable; bas
Meaning
dishonorable; not noble in character; base or mean
Example
His ignoble actions betrayed his friends' trust.
Ses actions ignobles ont trahi la confiance de ses amis.
C1 noun /ˌɪn.dʒəˈnjuː.ɪ.ti/

ingenuity

ingéniosité
Meaning
The quality of being clever, original, and inventive.
Example
His ingenuity led to groundbreaking innovations.
Son ingéniosité a conduit à des innovations de rupture.
C1 verb /ɪnˈtruːd/

intrude

interrompre
Meaning
To enter a place or situation where one is not wanted or not invited.
Example
He felt embarrassed to intrude on their private conversation.
Il s'est senti embarrassé d'interrompre leur conversation privée.
C1 adjective ɪnɪɡˈzɔːstɪbəl

inexhaustible

inépuisable
Meaning
Unable to be used up or worn out; limitless.
Example
His inexhaustible energy allowed him to work tirelessly on his projects.
Son énergie inépuisable lui a permis de travailler sans relâche sur ses projets.
C2 adjective /ɪˈrædɪkəbəl/

irradicable

irradicable
Meaning
not able to be eradicated; impossible to destroy or remove completely
Example
The love of a mother for her child is irradicable.
L'amour d'une mère pour son enfant est irradicable.
C1 noun /ˌɪməˈrælɪti/

immorality

immoralité
Meaning
the quality of being immoral; behavior that violates accepted moral standards
Example
The community condemned the immorality of the corrupt officials.
La communauté a condamné l’immoralité des fonctionnaires corrompus.
C1 verb /ˈɪmprəvaɪz/

improvise

improviser
Meaning
To create or perform something spontaneously without preparation.
Example
The actor had to improvise his lines when he forgot the script.
L'acteur a dû improviser ses répliques lorsqu'il a oublié le script.
B2 noun ɪnˈtɛɡrɪti

integrity

intégrité
Meaning
The quality of being honest and having strong moral principles; moral uprightness.
Example
Teachers' integrity fosters a positive learning environment.
L'intégrité des enseignants favorise un environnement d'apprentissage positif.
C1 adjective /ɪnˈdʌstriəs/

industrious

travailleur
Meaning
Hardworking and diligent in one's duties.
Example
She is an industrious student who always completes her assignments on time.
Elle est une étudiante travailleuse qui termine toujours ses devoirs à temps.
C2 adjective /ɪˈræsɪbl/

irascible

irritable
Meaning
Easily angered; quick-tempered.
Example
His irascible nature often got him into trouble.
Sa nature irritable le mettait souvent dans des situations difficiles.
B2 noun /ɪmˈpeɪʃəns/

impatience

impatience
Meaning
The state of being quickly irritated or unable to wait calmly.
Example
His impatience grew as the meeting dragged on.
Son impatience grandissait à mesure que la réunion s'éternisait.
C1 noun /ˈɪn.tə.lekt/

intellect

intellect
Meaning
The ability to think, reason, and understand objectively.
Example
Her intellect is admired by all her colleagues.
Son intellect est admiré par tous ses collègues.
C2 adjective /ˌɪmpəˈmɪsəbl/

impermissible

interdit
Meaning
Not permitted or allowed.
Example
Such behavior is impermissible in the workplace.
Un tel comportement est interdit sur le lieu de travail.
C1 adjective /ɪnˈtɒl.ər.ə.bəl/

Intolerable

intolérable
Meaning
unable to be endured; extremely unpleasant or painful
Example
The noise from the construction site was intolerable.
Le bruit du chantier était intolérable.
C1 adjective /ˌɪnkəʊˈhɪərənt/

incoherent

incohérent
Meaning
Not clear or easy to understand; lacking logical connection.
Example
His explanation was so incoherent that nobody could follow it.
Son explication était tellement incohérente que personne ne pouvait la suivre.
C2 adjective /ˌɪrɪˈdɛsənt/

iridescent

iridescent
Meaning
showing luminous colors that seem to change when seen from different angles
Example
She wore an iridescent dress that sparkled in the light.
Elle portait une robe iridescente qui scintillait à la lumière.
B2 adjective ˈɪn.tɪ.ɡreɪ.tɪd

integrated

intégré
Meaning
Combining or coordinating separate elements so as to provide a harmonious, interrelated whole.
Example
Integrated systems optimize efficiency.
Les systèmes intégrés optimisent l'efficacité.
C1 noun /ˌaɪ.diˈɒl.ə.dʒi/

ideology

idéologie
Meaning
A system of ideas and ideals, especially one that forms the basis of economic or political theory and policy.
Example
Democracy is based on the ideology of freedom and equality.
La démocratie repose sur l'idéologie de la liberté et de l'égalité.
C2 verb /ɪnˈdʒɛst/

ingest

ingérer
Meaning
To take food, drink, or another substance into the body, usually by swallowing.
Example
The patient must ingest the medicine with water.
Le patient doit ingérer le médicament avec de l'eau.
B1 adjective /ɪˈliː.ɡəl/

illegal

illégal
Meaning
Not allowed by law; unlawful.
Example
It is illegal to drive without a valid license.
Il est illégal de conduire sans une licence valide.
B2 adjective /ˌɪnkənˈviːniənt/

Inconvenient

inconfortable; gênant; problématique
Meaning
causing trouble, difficulties, or discomfort; awkward; troublesome
Example
The broken elevator made it inconvenient to reach the top floor.
L'ascenseur cassé a rendu l'accès au dernier étage inconfortable.
B2 noun /ˌaɪ.səˈleɪ.ʃən/

Isolation

isolement
Meaning
the process or fact of isolating or being isolated; separation from other people or things
Example
The patient was kept in isolation to prevent the spread of the infectious disease.
Le patient a été mis en isolement pour empêcher la propagation de la maladie infectieuse.
C1 adjective /ɪnˈsɛp(ə)rəbəl/

inseparable

inséparable
Meaning
Unable to be separated or always together.
Example
The two friends have been inseparable since childhood.
Les deux amis sont inséparables depuis l'enfance.
C2 noun /ɪˈnænɪti/

inanity

ineptie, absurdité
Meaning
a nonsensical remark or action; silliness; emptiness
Example
The speech was full of inanities that bored the audience.
Le discours était rempli d'inepties qui ennuyaient le public.
C1 adjective /ɪˈneɪn/

inane

insensé, stupide
Meaning
lacking sense, meaning, or significance; silly or pointless
Example
The movie was criticized for its inane dialogue.
Le film a été critiqué pour ses dialogues insensés.
C1 adjective /ɪnˈtjuː.ɪ.tɪv/

intuitive

intuitif
Meaning
Based on instinctive understanding rather than reasoning.
Example
The software has an intuitive design that makes it easy to use.
Le logiciel a un design intuitif qui le rend facile à utiliser.
C1 verb /ˈɪnstɪˌɡeɪt/

instigate

inciter
Meaning
To bring about or initiate an action, often something negative.
Example
He was accused of instigating the riot.
Il a été accusé d'inciter aux émeutes.
C1 noun /ɪnˈsɜːrdʒəns/

insurgence

insurrection
Meaning
An act of rebellion or uprising against authority.
Example
The government struggled to contain the growing insurgence.
Le gouvernement a eu du mal à contenir l'insurrection croissante.
C2 noun /ˈɪn.dɪ.dʒəns/

indigence

indigence
Meaning
a state of extreme poverty or destitution
Example
The charity was founded to help people living in indigence.
La charité a été fondée pour aider les personnes vivant dans l'indigence.
B2 noun ˌɪn.fləˈmeɪ.ʃən

inflammation

inflammation
Meaning
A localized physical condition in which part of the body becomes reddened, swollen, hot, and often painful.
Example
Chronic inflammation can lead to severe diseases.
L'inflammation chronique peut entraîner des maladies graves.
B2 verb /ɪnˈdʌldʒ/

indulge

se livrer
Meaning
to allow oneself to enjoy something enjoyable, often excessively
Example
He indulged in a piece of chocolate cake after dinner.
Il s'est adonné à un morceau de gâteau au chocolat après le dîner.
C1 noun /ˌɪnsɪɡˈnɪfɪkəns/

insignificance

insignifiance
Meaning
The quality of being unimportant or trivial.
Example
He felt a sense of insignificance in the vast universe.
Il ressentait un sentiment d'insignifiance dans l'immensité de l'univers.
B2 noun /aɪˈdiː/

id

pièce d'identité
Meaning
identification; a document or number used to prove who someone is
Example
Please show your ID at the entrance.
Veuillez montrer votre pièce d'identité à l'entrée.
C1 adjective ˌɪn.tə.dʒen.əˈreɪ.ʃən.əl

intergenerational

intergénérationnel, entre différentes générations d'une famille
Meaning
Existing or occurring between different generations of a family.
Example
Intergenerational wisdom ensures cultural continuity.
La sagesse intergénérationnelle garantit la continuité culturelle.
C1 verb /ɪnˈsaɪt/

incite

inciter
Meaning
to provoke; to stir up
Example
His speech incited the crowd to violence.
Son discours a incité la foule à la violence.
B1 adjective /ɪnˈtɜːrnəl/

internal

interne
Meaning
situated inside; relating to the inside or inner part of something
Example
The company is conducting an internal audit this month.
L'entreprise effectue un audit interne ce mois-ci.
C1 noun /ɪnˈtruː.ʒən/

intrusion

intrusion non autorisée
Meaning
Unauthorized entry into a system or place without permission
Example
The company detected an intrusion in its server.
L'entreprise a détecté une intrusion dans son serveur.
B2 adjective /ɪˈmjuːn/

immune

immunisé
Meaning
protected from disease or from the effects of something
Example
Children who are vaccinated are immune to many diseases.
Les enfants vaccinés sont immunisés contre de nombreuses maladies.
C2 adjective /ˌɪndɪˈfætɪɡəbl̩/

indefatigable

inébranlable
Meaning
persisting tirelessly; incapable of being fatigued
Example
Her indefatigable spirit kept the team motivated during the long project.
Son esprit inébranlable a gardé l'équipe motivée pendant le long projet.
B2 noun, verb /ˈɪnstɪˌtjuːt/

institute

institut
Meaning
as a noun, an organization founded for a specific purpose; as a verb, to establish or initiate
Example
The university decided to institute new rules for the library.
L'université a décidé d'instituer de nouvelles règles pour la bibliothèque.
C1 adjective /ɪnˈsɒlvənt/

insolvent

insolvable
Meaning
unable to pay debts owed
Example
The insolvent firm could not meet its financial obligations.
L'entreprise insolvable n'a pas pu remplir ses obligations financières.
B2 verb ɪmˈpoʊz

imposes

imposer
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.
La pollution impose des effets nuisibles à l'environnement.
B1 verb /ˈɪndʒər/

injure

blesser
Meaning
to cause physical harm or damage to someone or something
Example
He injured his leg while playing football.
Il s'est blessé à la jambe en jouant au football.
C2 verb /ɪnˈtɜːr/

inter

enterrer
Meaning
To bury a dead body in the ground.
Example
They decided to inter the soldier with full honors.
Ils ont décidé d'enterrer le soldat avec tous les honneurs.
C1 verb /ɪmˈploʊd/

implode

imploser
Meaning
To collapse or burst inward violently.
Example
The old building imploded during the demolition.
Le vieux bâtiment a implosé pendant la démolition.
C1 verb /ˈɪmplɪˌkeɪt/

implicate

impliquer
Meaning
To show someone’s involvement in a crime or wrongdoing.
Example
The evidence implicated several officials in the scandal.
Les preuves ont impliqué plusieurs responsables dans le scandale.
B2 noun ˌɪn.tɪˈɡreɪ.ʃən

integration

Intégration. Unification.
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.
L'intégration des réseaux améliorera la communication mondiale.
C1 adjective /ˌɪnədˈvɜːrtənt/

inadvertent

involontaire, non intentionnel
Meaning
Not resulting from or achieved through deliberate planning; unintentional.
Example
Her inadvertent mistake caused a delay in the project.
Son erreur involontaire a causé un retard dans le projet.
C1 noun /ˈɪmɪdʒəri/

imagery

imagerie
Meaning
visually descriptive or figurative language, especially in a literary work
Example
The poet's use of imagery brought the scene to life.
L'utilisation de l'imagerie par le poète a donné vie à la scène.
C1 noun /ˈɪntrɪkəsi/

intricacy

complexité
Meaning
the quality of being very detailed or complicated
Example
The intricacy of the design impressed everyone.
La complexité du design a impressionné tout le monde.
C2 adjective /ˌɪnɪkˈspiːdiənt/

inexpedient

déconseillé
Meaning
Not advisable, suitable, or practical in the circumstances.
Example
It would be inexpedient to invest without proper research.
Il serait déconseillé d'investir sans une recherche appropriée.
C1 verb /ɪnˈvoʊk/

invoke

invoquer
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.
L'avocat a invoqué la constitution pour défendre son client.
C2 verb /ɪmˈpeɪl/

impale

empaler
Meaning
to pierce or fix something with a sharp object
Example
The knight was impaled by the enemy’s spear.
Le chevalier a été empalé par la lance de l'ennemi.
C1 adjective /ɪˈluː.sɪv/

Illusive

illusoire; semblant d'exister mais irréel; trompeur
Meaning
deceptive; appearing to exist but not real; misleading
Example
The promise of easy money proved to be illusive and misleading.
La promesse d'argent facile s'est avérée illusoire et trompeuse.
C2 noun /ˈɪn.fɪ.del/

Infidel

infidèle
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.
Dans des contextes historiques, les croisés se référaient souvent à leurs ennemis comme des infidèles.
C1 verb /ɪnˈklaɪn/

incline

s'incliner
Meaning
to feel willing or favorably disposed toward something; to bend or tilt
Example
She is inclined to agree with the proposal.
Elle est inclinée à être d'accord avec la proposition.
C1 adjective ˈɪn.tər.ɪm

interim

intérimaire
Meaning
In or for the intervening period; provisional or temporary.
Example
Interim governments manage transitional phases.
Les gouvernements intérimaires gèrent les phases de transition.
C1 adjective /ˌaɪdiəˈlɪstɪk/

Idealistic

idéaliste
Meaning
pursuing high principles or ideals; unrealistically optimistic
Example
She has an idealistic view of changing the world.
Elle a une vision idéaliste de changer le monde.
B2 adjective /aɪˈrɒnɪkəl/

ironical

ironique
Meaning
expressing irony; having the nature of irony
Example
Her ironical tone made everyone uncomfortable.
Son ton ironique a mis tout le monde mal à l'aise.
B2 adjective + noun aɪˈdiːəl ɪnˈvaɪrənmənt

ideal environment

environnement idéal
Meaning
Perfect or most suitable conditions for growth or development
Example
Winter creates an ideal environment for vegetable growth.
L'hiver crée un environnement idéal pour la croissance des légumes.
C2 noun /ɪnˈtɒksɪkənt/

intoxicant

intoxiquant
Meaning
a substance, especially alcohol or a drug, that causes intoxication
Example
Alcohol is the most commonly used intoxicant in many cultures.
L'alcool est l'intoxicant le plus couramment utilisé dans de nombreuses cultures.
C1 adjective /ɪnˈvɑːlənˌtɛri/

involuntary

involontaire
Meaning
done without will or conscious control
Example
He gave an involuntary shiver when he heard the loud noise.
Il a eu un frisson involontaire lorsqu'il a entendu le bruit fort.
C2 adjective /ˌɪnsəˈluːbriəs/

insalubrious

insalubre
Meaning
Unhealthy or not conducive to well-being.
Example
They moved out of the insalubrious neighborhood for the sake of their health.
Ils ont déménagé du quartier insalubre pour leur santé
C1 noun /ˈɪŋ.krə.mənt/

Increment

augmentation
Meaning
an increase or addition, especially one of a series on a fixed scale; a regular increase in salary
Example
He received an annual increment of five percent in his salary this year.
Il a reçu une augmentation annuelle de cinq pour cent de son salaire cette année.
C2 noun /ɪnˈkɒnstənsi/

inconstancy

inconstance
Meaning
The quality of changing frequently or being unreliable.
Example
The inconstancy of the weather makes planning difficult.
L'inconstance du temps rend la planification difficile.
C2 noun /ˈɪnsələns/

insolence

insolence
Meaning
rude or disrespectful behavior
Example
The teacher was shocked by the student's insolence.
L'enseignant a été choqué par l'insolence de l'élève.
C2 noun /ˌɪn.trəˈɡreʃ.ən/

introgression

introgression génétique
Meaning
The transfer of genetic information from one species to another through repeated backcrossing.
Example
Introgression plays a significant role in plant breeding.
L'introgression joue un rôle important dans la reproduction des plantes.
C1 verb /ɪmˈpɒvərɪʃ/

impoverish

appauvrir
Meaning
To make someone poor or reduce the quality or richness of something.
Example
The long war impoverished the entire nation.
La longue guerre a appauvri toute la nation.
C1 noun /ɪmˌpɜː.sənˈeɪ.ʃən/

impersonation

usurpation d'identité
Meaning
The action of pretending to be another person for the purpose of entertainment or fraud.
Example
Online impersonation is a serious cybercrime.
L'usurpation d'identité en ligne est un crime informatique grave.
B2 noun, verb /ɪntʃ/

inch

pouce / se déplacer lentement
Meaning
A unit of length equal to 2.54 centimeters; or to move slowly and carefully in small amounts.
Example
She inched closer to the edge of the stage.
Elle s'est lentement rapprochée du bord de la scène.
B2 noun ˌɪn.təˈven.ʃən

intervention

intervention
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.
L'intervention de l'ONU a été cruciale pour résoudre le conflit.
C1 adjective /ɪˈrɛvərənt/

irreverent

irrévérencieux
Meaning
showing a lack of respect for people or things that are usually respected
Example
The comedian’s irreverent jokes offended some of the audience.
Les blagues irrévérencieuses du comédien ont offensé certains membres du public.
C2 adjective /ɪnˈkɒrɪdʒəbəl/

incorrigible

incorrigible
Meaning
incapable of being corrected, improved, or reformed
Example
He is an incorrigible optimist who never loses hope.
C'est un optimiste incorrigible qui ne perd jamais espoir.
C2 verb /ˌɪmpɔːrˈtuːnd/

importuned

demander de manière insistante
Meaning
asked someone persistently and pressingly for something
Example
She importuned her boss for a raise until he finally gave in.
Elle demandait de manière insistante une augmentation à son patron jusqu'à ce qu'il cède enfin.
B2 verb /ˈɪl.ə.streɪt/

illustrate

illustrer
Meaning
to explain or make something clear by using examples, pictures, or comparisons
Example
The teacher used diagrams to illustrate the concept.
Le professeur a utilisé des diagrammes pour illustrer le concept.
C1 adjective /ɪnˈdetɪd/

Indebted

endetté; reconnaissant
Meaning
owing money or gratitude to someone; obligated; grateful
Example
I am deeply indebted to my teacher for all her guidance.
Je suis profondément endetté envers ma professeure pour toute sa guidance.
C1 verb ɪmˈbjuː

Imbue

Mélanger une idée ou un sentiment profondément dans l'esprit de quelqu'un
Meaning
Mixing some idea or feeling deeply into someone's mind
Example
The teacher tried to imbue students with a love for learning.
L'enseignant a essayé d'inculquer aux élèves un amour de l'apprentissage.
C1 verb /ɪnˈfrɪndʒ/

infringe

enfreindre
Meaning
To actively break the terms of a law, agreement, or right.
Example
Copying this software without permission will infringe copyright laws.
Copier ce logiciel sans permission enfreindra les lois sur le droit d'auteur.
B2 noun /ɪnˈtɜː.prə.tər/

Interpreter

interprète; traducteur;
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.
La conférence internationale a embauché des interprètes professionnels pour traduire les discours en temps réel.
C2 adjective /ˌɪn.ɪˈlʌk.tə.bəl/

ineluctable

inéluctable
Meaning
Impossible to avoid or escape; inevitable.
Example
Death is an ineluctable part of human existence.
La mort est une partie inéluctable de l'existence humaine.
C1 adjective /ɪnˈdefɪnət/

Indefinite

indéfini
Meaning
not clearly defined; uncertain; vague; unlimited in time
Example
The meeting has been postponed for an indefinite period.
La réunion a été reportée pour une période indéfinie.
B2 noun /ˈɪn.vɔɪs/

Invoice

facture
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.
L'entreprise a envoyé une facture pour les fournitures de bureau livrées la semaine dernière.
C2 adjective /ɪnˈɛksərəbl/

inexorable

inexorable
Meaning
Impossible to stop or prevent; relentless.
Example
The inexorable rise of technology is changing every aspect of life.
La montée inexorable de la technologie change chaque aspect de la vie.
C1 adjective /ˌɪndɪˈstrʌktəbl/

indestructible

indestructible
Meaning
Impossible to destroy or break.
Example
The superhero's shield was said to be indestructible.
On disait que le bouclier du super-héros était indestructible.
B2 noun /ɪnˈsen.tɪv/

Incentive

incitation; encouragement
Meaning
a thing that motivates or encourages someone to do something; a reward or penalty that influences behavior
Example
The company offered a cash incentive to employees who exceeded their sales targets.
L'entreprise a offert une incitation en argent aux employés qui ont dépassé leurs objectifs de vente.
C2 adjective /ɪnˈsuːsiənt/

insouciant

insouciant
Meaning
Showing a casual lack of concern; carefree.
Example
He gave an insouciant shrug and walked away.
Il a haussé les épaules de manière insouciante et est parti.