inconsiderable
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C2 adjective /ˌɪnkənˈsɪdərəbl/

inconsiderable

insignifiant
Meaning
Too small or unimportant to be worth considering.
Example
The donation was not inconsiderable, though smaller than expected.
La donation n'était pas insignifiante, bien qu'elle fût plus petite que prévu.
C2 verb /aɪˈtɪnəˌreɪt/

itinerate

itinerer
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.
Le missionnaire a voyagé dans toute la région pour répandre le message.
C1 noun /ˌɪn.səˌbɔːr.dɪˈneɪ.ʃən/

insubordination

insubordination
Meaning
Defiance of authority; refusal to obey orders.
Example
The soldier was punished for insubordination during the mission.
Le soldat a été puni pour insubordination pendant la mission.
C1 adjective /ɪˈmækjələt/

immaculate

immaculé
Meaning
perfectly clean, neat, or free from flaws
Example
Her room was immaculate, with everything in its place.
Sa chambre était immaculée, tout était à sa place.
C1 adjective /ɪnˈveə.ri.ə.bəl/

Invariable

invariable; constant; toujours le même
Meaning
never changing; constant; always the same
Example
His invariable routine includes morning exercise and coffee.
Sa routine invariable comprend des exercices matinaux et du café.
C1 adjective /ˈaɪərnˌklæd/

ironclad

inflexible
Meaning
impossible to change, break, or dispute; very strong and firm
Example
The company had an ironclad contract with its suppliers.
L'entreprise avait un contrat inflexible avec ses fournisseurs.
B1 noun /ɪnˌvɛs.tɪˈɡeɪ.ʃən/

investigation

enquête
Meaning
the process of inquiring into or examining something carefully to find the truth
Example
The investigation revealed new evidence about the fraud.
L'enquête a révélé de nouvelles preuves sur la fraude.
C2 adjective /ˌɪnsəˈprɛsəbl/

insuppressible

irrépressible
Meaning
That cannot be suppressed or restrained.
Example
She had an insuppressible urge to laugh during the ceremony.
Elle avait une envie irrépressible de rire pendant la cérémonie.
A2 pronoun /ɪtˈsɛlf/

itself

lui-même
Meaning
Used to emphasize the thing just mentioned; by its own power or effort.
Example
The cat cleaned itself after eating.
Le chat s'est nettoyé lui-même après avoir mangé.
C1 adjective ˌɪn.təˈstel.ər

interstellar

entre les étoiles, interstellaire, cosmique
Meaning
Occurring or situated between stars.
Example
Scientists study interstellar travel possibilities.
Les scientifiques étudient les possibilités de voyages interstellaires.
C1 noun /ɪˈrɛlɪvənsi/

irrelevancy

irrélevance
Meaning
the state of being unrelated or unimportant to the matter at hand
Example
The judge dismissed the argument because of its irrelevancy to the case.
Le juge a rejeté l’argument en raison de son irrélevance pour l’affaire.
C2 noun /ˌɪn.strəˈmɛn.təl.ɪst/

instrumentalist

instrumentiste
Meaning
A person who plays a musical instrument.
Example
The instrumentalist played a beautiful solo on the violin.
L'instrumentiste a joué un beau solo au violon.
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.
B1 verb /ɪnˈfɔ:m/

inform

informer
Meaning
to tell someone about something; to give information
Example
Please inform me when you arrive at the airport.
s'il vous plaît, informez-moi lorsque vous arrivez à l'aéroport.
C1 verb /ˌɪnstɪˈtjuːʃənəlaɪz/

institutionalize

institutionnaliser
Meaning
to establish something as a formal institution, custom, or practice
Example
The government seeks to institutionalize environmental protection.
Le gouvernement cherche à institutionnaliser la protection de l'environnement.
C1 noun /ɪnˈfɜːrnoʊ/

inferno

incendie
Meaning
a large, intense fire that is dangerously out of control
Example
The building turned into an inferno within minutes.
Le bâtiment s'est transformé en un incendie en quelques minutes.
C1 verb /ˌɪn.tɚˈtwaɪn/

intertwine

connecter ou lier étroitement; tordre ou combiner étroitement
Meaning
To connect or link closely; to twist together or combine closely.
Example
Their lives became intertwined through years of friendship.
Leurs vies se sont entrelacées au fil des années d'amitié.
C1 adjective /ɪˈmuː.və.bəl/

immovable

immobile
Meaning
Not able to be moved; fixed in position.
Example
Immovable barriers prevent change.
Les barrières immobiles empêchent le changement.
A1 preposition /ɪn ˈfrʌnt əv/

in front of

devant
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.
Elle se tenait devant le bâtiment.
C1 adjective ˌɪn.təˈmɪt.ənt

intermittent

intermittent
Meaning
Happening irregularly, not continuously.
Example
The rain was intermittent throughout the day.
La pluie était intermittente toute la journée.
C1 adjective /ɪˈrɛpərəbəl/

Irreparable

irréparable
Meaning
impossible to repair or fix; permanent damage that cannot be undone
Example
The accident caused irreparable damage to his spine.
L'accident a causé des dommages irréparables à sa colonne vertébrale.
C1 adjective; noun /ɪˈmɔːrtl/

immortal

immortel
Meaning
living forever; never dying; lasting forever in fame or memory
Example
Legends often describe heroes as immortal beings who never die.
Les légendes parlent d’êtres immortels.
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.
B1 verb /aɪˈdentɪfaɪ/

identify

identifier
Meaning
to recognize; to establish who someone is
Example
Can you identify the suspect?
Pouvez-vous identifier le suspect?
B2 adjective /ˈaɪ.dəl/

Idle

paresseux; inactif; ne travaillant pas
Meaning
lazy; inactive; not working or being used
Example
The factory workers were idle during the strike.
Les ouvriers de l'usine étaient inactifs pendant la grève.
C2 adjective /ˌɪn.trəˈsɛl.jʊ.lər/

intracellular

à l'intérieur de la cellule
Meaning
Located or occurring within a cell.
Example
The drug works by targeting intracellular bacteria.
Le médicament agit en ciblant les bactéries intracellulaires.
C1 verb /ɪnˈterəˌɡeɪt/

interrogate

interroger
Meaning
to ask someone questions in a thorough and formal way; to question intensively
Example
The police interrogated the suspect for hours.
La police a interrogé le suspect pendant des heures.
B2 noun /ˈɪdɪət/

idiot

idiot
Meaning
a person who acts in a way that is considered very stupid or foolish
Example
He acted like an idiot at the party last night.
Il a agi comme un idiot à la fête hier soir.
B1 verb /ɪmˈprɛs/

impress

impressionner
Meaning
to cause someone to feel admiration or respect
Example
Her speech managed to impress the audience.
Son discours a réussi à impressionner le public.
C2 adjective /ˌɪntərˈlɒkjətəri/

interlocutory

provisoire
Meaning
Given during the course of a legal action, not final but temporary or provisional.
Example
The judge issued an interlocutory order to maintain the status quo until the hearing.
Le juge a émis une ordonnance provisoire pour maintenir le statu quo jusqu'à l'audience.
A1 pronoun /ɪt/

it

ça
Meaning
used to refer to a thing, animal, or idea previously mentioned or easily identified
Example
It is raining outside.
Il pleut dehors.
B1 noun /ˈɪnstrəmənt/

instrument

instrument
Meaning
A tool or device used for a particular purpose, especially for scientific or musical work.
Example
The doctor used a special instrument during the surgery.
Le médecin a utilisé un instrument spécial pendant la chirurgie.
C1 noun /ɪmˈpɜː.mə.nəns/

impermanence

impermanence
Meaning
The state or fact of lasting for only a limited period of time.
Example
The philosophy of Buddhism emphasizes the impermanence of life.
La philosophie bouddhiste met l'accent sur l'impermanence de la vie.
B2 verb /ɪnˈsʌlt/

insult

insulter
Meaning
to speak or act in a way that hurts someone's feelings or shows disrespect
Example
He felt insulted by her rude comments.
Il s'est senti insulté par ses commentaires impolis.
C2 noun /ɪnˈtɛmpərəns/

intemperance

intempérance
Meaning
Lack of moderation or self-control, especially with drinking or eating.
Example
His intemperance in drinking ruined his health.
Son intempérance dans l'alcool a ruiné sa santé.
B2 adjective ˌɪn.təˈræk.tɪv

interactive

interactif
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.
L'apprentissage interactif maintient les étudiants engagés dans les leçons.
B1 adverb /ɪnˈkriːsɪŋli/

increasingly

de plus en plus
Meaning
more and more over time
Example
People are increasingly concerned about climate change.
Les gens sont de plus en plus préoccupés par le changement climatique.
B2 adjective /ɪnˈklaɪnd/

inclined

incliné
Meaning
having a tendency or disposition toward something
Example
He is inclined to help those in need.
Il est enclin à aider ceux qui sont dans le besoin.
C2 adjective /ˌɪrɪˈtriːvəbl/

irretrievable

irrécupérable
Meaning
impossible to recover or regain
Example
The documents were lost in an irretrievable way after the fire.
Les documents ont été perdus de manière irrécupérable après l'incendie.
C2 adjective /ɪˈmɒdərət/

immoderate

immodéré
Meaning
excessive; beyond reasonable limits
Example
He has an immoderate love for sweets.
Il a un amour immodéré pour les bonbons.
C2 noun /ɪˈluːmɪnənt/

illuminant

illuminant
Meaning
A substance or device that produces light.
Example
The lamp acted as an illuminant in the dark cave.
La lampe a agi comme un illuminant dans la grotte sombre.
C2 adjective /ˌɪrɛvəˈrɛnʃəl/

irreverential

irrévérencieux
Meaning
Showing a lack of respect for things that are generally taken seriously.
Example
His irreverential humor often shocked traditional audiences.
Son humour irrévérencieux choquait souvent les spectateurs traditionnels.
A1 adjective /ɪmˈpɔː.tənt/

important

important
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.
Des mesures importantes doivent être prises pour résoudre la pollution.
C1 noun /ˌɪnkwɪˈzɪʃən/

inquisition

inquisition
Meaning
A prolonged and intense questioning or investigation, often harsh in nature.
Example
The journalist faced an inquisition from the panel about his sources.
Le journaliste a fait face à une inquisition de la part du panel sur ses sources.
C1 verb /ɪmˈpɛrɪl/

imperil

mettre en danger
Meaning
To put in danger or at risk.
Example
Reckless driving can imperil the lives of others.
La conduite imprudente peut mettre la vie des autres en danger.
C1 adjective /ˌɪndɪˈskriːt/

indiscreet

imprudent
Meaning
Not careful in what one says or does, likely to reveal secrets or offend.
Example
It was indiscreet of him to mention the plan in public.
C'était imprudent de sa part de mentionner le plan en public.
C2 noun /ˈɪd.i.ə.si/

Idiocy

idiotie
Meaning
extremely stupid behavior or actions; foolishness
Example
The decision to ignore safety protocols was pure idiocy that endangered everyone.
La décision d'ignorer les protocoles de sécurité était une pure idiotie qui mettait tout le monde en danger.
C1 noun /ˌɪn.trəˈspek.ʃən/

introspection

introspection
Meaning
The examination or observation of one's own mental and emotional processes; self-reflection.
Example
Through introspection, she gained insight into her emotions.
Grâce à l'introspection, elle a acquis une profonde compréhension de ses émotions.
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.
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.
A2 verb /ɪmˈpruːv/

improve

améliorer
Meaning
to make or become better; to enhance quality or condition
Example
Practice helps improve your skills.
La pratique aide à améliorer vos compétences.
C1 verb /ɪmˈpiːd/

impede

entraver
Meaning
To obstruct or hinder the progress or development of something.
Example
Lack of funds can impede business growth.
Le manque de fonds peut entraver la croissance des entreprises.
B1 adjective /ˈɪnər/

inner

intérieur
Meaning
Located inside or closer to the center; relating to one’s thoughts or feelings.
Example
She shared her inner thoughts with her best friend.
Elle a partagé ses pensées intérieures avec sa meilleure amie.
C2 noun /ˌɪnsjəˈlærəti/

insularity

insularité
Meaning
The state of being isolated or narrow-minded.
Example
The insularity of the group prevented them from accepting new ideas.
L'insularité du groupe l'a empêché d'accepter de nouvelles idées.
C1 adjective /ˈɪrɪtəbl/

irritable

irritable
Meaning
easily annoyed or made angry
Example
She became irritable after working long hours without rest.
Elle est devenue irritable après avoir travaillé de longues heures sans repos.
B1 adverb /ɪnˈkrɛdɪbli/

incredibly

incroyablement
Meaning
to a great degree; extremely or unbelievably
Example
The view from the top of the mountain was incredibly beautiful.
La vue du sommet de la montagne était incroyablement belle.
C2 noun /ˈɪntərˌveɪl/

intervale

terre basse le long d'une rivière, généralement fertile et plate
Meaning
A low-lying tract of land along a river, usually fertile and flat.
Example
The farmers cultivated crops on the lush intervale by the river.
Les agriculteurs ont cultivé des cultures dans l'intervalle fertile près de la rivière.
C1 verb /ɪnˈdaɪt/

indict

inculper
Meaning
to formally accuse someone of committing a serious crime
Example
The grand jury decided to indict the politician for corruption.
Le grand jury a décidé d'inculper le politicien pour corruption.
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 noun /ˈɪn.tə.mə.si/

Intimacy

intimité; proximité
Meaning
close familiarity or friendship; closeness; a private cozy atmosphere
Example
The couple valued the emotional intimacy they shared more than material possessions.
Le couple a plus apprécié l'intimité émotionnelle qu'ils partageaient que les biens matériels.
C1 adjective /ˌɪnkɒmprɪˈhɛnsəbl/

incomprehensible

incompréhensible
Meaning
Impossible or very difficult to understand.
Example
The professor’s lecture was so fast it became incomprehensible.
Le cours du professeur était tellement rapide qu'il est devenu incompréhensible.
C1 adjective, noun /ˈɪnvəlɪd/ (adjective), /ɪnˈvælɪd/ (noun)

invalid

invalide
Meaning
Not valid; having no force or effect. Also refers to a person too weak or ill to care for themselves.
Example
The court declared the contract invalid.
Le tribunal a déclaré le contrat invalide.
A1 pronoun /aɪ/

i

je
Meaning
used by a speaker to refer to himself or herself
Example
I am learning English every day.
Je suis en train d'apprendre l'anglais tous les jours.
C2 adjective /ɪnˈsɛndiˌɛri/

incendiary

incendiaire / provocateur
Meaning
designed to cause fires or stir up conflict
Example
The politician’s incendiary remarks angered the crowd.
Les remarques incendiaires du politicien ont mis en colère la foule.
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 adjective /ɪmˈpæsɪv/

impassive

impassible
Meaning
Not showing or feeling emotion; expressionless.
Example
Despite the shocking news, she remained impassive.
Malgré les nouvelles choquantes, elle est restée impassible.
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.
A2 verb /ɪˈmædʒɪn/

imagine

imaginer
Meaning
to form a mental image of; to believe something unreal to be true
Example
Can you imagine living in a different country?
Peux-tu imaginer vivre dans un autre pays?
C1 adjective /ɪnˈdiːsənt/

indecent

indécent
Meaning
not conforming to accepted standards of behavior or morality; improper or offensive
Example
He was warned for making an indecent remark during the meeting.
Il a été averti pour une remarque indécente.
C2 verb ɪmˈbaɪb

imbibe

absorber, assimiler, boire
Meaning
Absorb or assimilate ideas or knowledge. To drink or take in.
Example
He tried to imbibe the wisdom from his mentor.
Il a essayé d'absorber la sagesse de son mentor.
C1 verb /ɪnˈfjuːz/

infuse

infuser
Meaning
to fill or spread through something; to instill a quality, idea, or feeling
Example
The teacher tried to infuse her students with a love for reading.
Le professeur a essayé d'infuser à ses élèves un amour pour la lecture.
B2 adjective /ɪnˈstrʌkʃənəl/

instructional

pédagogique
Meaning
providing knowledge or information; intended to teach
Example
The website offers many instructional videos for beginners.
Le site Web propose de nombreuses vidéos pédagogiques pour les débutants.
B1 noun /ɪmˈpruːvmənt/

improvement

amélioration
Meaning
the act of making something better
Example
There has been a significant improvement in his health.
Il y a eu une amélioration significative de sa santé.
C2 noun (compound/erroneous entry) /ɪnˈɛksərəbl ɑːrmi/

inexorableinexorablearmy

armée imparable
Meaning
This appears to be a corrupted or concatenated form; interpreted as 'inexorable army' — an unstoppable or relentless force.
Example
The rebels feared the inexorable army approaching their stronghold.
Les rebelles craignaient l'armée imparable qui approchait de leur bastion.
C1 noun /ɪnˈsek.tɪ.saɪd/

Insecticide

insecticide
Meaning
a substance used for killing insects; a chemical pesticide that targets insects
Example
The farmer sprayed insecticide on his crops to protect them from harmful bugs.
Le fermier a pulvérisé de l'insecticide sur ses cultures pour les protéger des insectes nuisibles.
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.
C2 verb /ˌɪntərˈmɪt/

intermit

interrompre
Meaning
To suspend or stop for a time; to pause intermittently.
Example
The rain would intermit and then start again.
La pluie s'interromprait puis recommencerait.
B2 noun /ɪnˈsaɪdə/

insider

initié
Meaning
a person within a group or organization who has access to confidential information
Example
He was an insider who knew all the company's secrets.
Il était un initié qui connaissait tous les secrets de l'entreprise.
C2 noun /ɪnˈsuːsiəns/

insouciance

insouciance
Meaning
Casual lack of concern; indifference.
Example
She carried herself with an air of insouciance, unbothered by the challenges ahead.
Elle marchait avec un air d'insouciance, sans se soucier des défis à venir.
C2 noun /ɪnˈtræn.sɪ.dʒəns/

intransigence

intransigeance
Meaning
Refusal to change one's views or to agree about something.
Example
The negotiations failed due to the intransigence of both parties.
Les négociations ont échoué en raison de l'intransigeance des deux parties.
C2 noun /ɪnˈfrækʃən/

infraction

infraction
Meaning
A violation or breach of a rule, law, or agreement.
Example
The student was punished for a minor infraction of the school rules.
L'étudiant a été puni pour une infraction mineure aux règles de l'école.
C2 noun /ˌɪkθiˈɒlədʒi/

ichthyology

ichtyologie
Meaning
The branch of zoology that deals with fish.
Example
He pursued a degree in ichthyology at the university.
Il a poursuivi un diplôme en ichtyologie à l'université.
B1 noun ɪˈnɪʃətɪv

initiative

initiative
Meaning
An act or strategy intended to resolve a difficulty or improve a situation; a fresh approach to something.
Example
NASA's initiative to return humans to the Moon is ambitious.
L'initiative de la NASA pour ramener des humains sur la Lune est ambitieuse.
C1 adjective /ɪnˈdʒʊəriəs/

injurious

nuisible
Meaning
Causing or likely to cause harm or damage.
Example
Smoking is injurious to health.
Fumer est nuisible à la santé.
C2 noun /ɪnˈsɪɡniə/

insignia

insigne
Meaning
A badge or symbol that shows rank, position, or membership.
Example
The soldier proudly wore the insignia of his regiment.
Le soldat portait fièrement l'insigne de son régiment.
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 adjective /ˌɪnɪkˈstɛnsəbl/

inextensible

inextensible
Meaning
Not capable of being stretched or extended.
Example
This rope is made of an inextensible material.
Cette corde est faite d’un matériau inextensible.
B2 verb /ɪnˈkɔːrpəreɪt/

incorporate

incorporer
Meaning
to include something as part of a whole; to form a corporation
Example
The new design incorporates advanced technology.
Le nouveau design incorpore la technologie avancée.
C2 adjective /aɪˈdɒlətrəs/

idolatrous

idolatrique
Meaning
Excessively admiring or worshipping someone or something as an idol.
Example
The king was criticized for his idolatrous devotion to wealth.
Le roi a été critiqué pour sa dévotion idolâtrique à la richesse.
B2 verb /ɪnˈtriːɡ/

intrigue

intriguer
Meaning
to arouse curiosity or interest; to make someone fascinated
Example
The mystery novel will intrigue any reader.
Le roman mystère intriguerait n'importe quel lecteur.
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.
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 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 /ˌɪndɪˈfɛnsəbl̩/

indefensible

indéfendable
Meaning
not able to be protected or justified
Example
The minister’s remarks were considered indefensible by the public.
Les remarques du ministre ont été jugées indéfendables par le public.
B2 noun /ɪnˈtɛnt/

intent

intention
Meaning
the purpose or reason behind an action; a strong determination to do something
Example
Her intent was to improve the quality of education in the community.
Son intention était d'améliorer la qualité de l'éducation dans la communauté.
A2 noun /ˈɪntəvjuː/

interview

entretien
Meaning
A meeting of people face to face, especially for consultation.
Example
The interview was conducted in a calm and professional manner.
L'entretien s'est déroulé de manière calme et professionnelle.
B2 noun /ˈɪm.pʌls/

Impulse

impulsion; désir soudain
Meaning
a sudden strong and unreflective urge or desire to act; a driving force or motivation
Example
She bought the expensive dress on impulse and later regretted the purchase.
Elle a acheté la robe chère sur un coup de tête et a ensuite regretté l'achat.
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 verb /ˈɪmprɪkeɪt/

imprecate

imprécation
Meaning
To utter a curse or invoke evil upon someone.
Example
The old woman imprecated her enemies with dark words.
La vieille femme a impréqué ses ennemis avec des mots sombres.
C1 noun ˌɪrɪˈvɜːrsəbl ˈdæmɪdʒ

irreversible damage

dommages irréversibles
Meaning
Harm or injury that cannot be undone or repaired.
Example
Climate change causes irreversible damage to ecosystems.
Le changement climatique cause des dommages irréversibles aux écosystèmes.
C1 noun /ˌɪm.pəˈzɪʃ.ən/

Imposition

imposition; charge; demande injuste
Meaning
the action or process of imposing something or of being imposed; an unfair burden or demand
Example
The imposition of new taxes without consultation angered the citizens greatly.
L'imposition de nouvelles taxes sans consultation a profondément enragé les citoyens.
C2 adjective /ˌaɪdəˈlɑːtrɪəs/

idolatrious

idolâtre
Meaning
Excessively devoted or reverent towards idols or false gods.
Example
The ancient tribe was known for its idolatrious practices.
La tribu ancienne était connue pour ses pratiques idolâtres.
C2 adjective /ˌɪməˈmɔːriəl/

immemorial

immémorial
Meaning
Extending back beyond memory or record; ancient.
Example
The tradition has been followed since time immemorial.
La tradition est suivie depuis des temps immémoriaux.
C1 noun /ˌɪmɔːrˈtæləti/

immortality

immortalité
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.
De nombreuses cultures anciennes pensaient que les héros pouvaient atteindre l’immortalité par de grands exploits.
C1 adjective /ˌɪnəˈfɛnsɪv/

inoffensive

inoffensif
Meaning
Not likely to offend or provoke; harmless.
Example
His inoffensive remarks kept the conversation friendly.
Ses remarques inoffensives ont maintenu la conversation amicale.
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.
B2 noun ˈɪn.frəˌstrʌk.tʃər

infrastructure

infrastructure
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.
L'infrastructure numérique est essentielle pour les progrès futurs.
C1 noun ɪnˌɛv.ɪ.təˈbɪl.ɪ.ti

inevitability

inévitabilité
Meaning
The quality of being certain to happen and impossible to avoid or prevent.
Example
The inevitability of change is a part of life.
L'inévitabilité du changement fait partie de la vie.
B2 verb /ɪnˈspekt/

inspect

inspecter
Meaning
to examine something carefully to check for problems or faults
Example
The engineer will inspect the building for structural damage.
L'ingénieur inspectera le bâtiment pour des dommages structurels.
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.
C2 adjective /ˌɪnkænˈdɛsənt/

incandescent

incandescent
Meaning
emitting light as a result of being heated; extremely bright or passionate
Example
The incandescent lamp lit up the entire hall.
La lampe incandescente a éclairé toute la salle.
C2 noun /ɪˈreɪdiəns/

irradiance

irradiance
Meaning
the quality of shining brightly; the intensity of light falling on a surface
Example
The irradiance of the sun at noon was overwhelming.
L'irradiance du soleil à midi était accablante.
C1 verb /ɪnˈvɜːrt/

invert

inverser
Meaning
To turn something upside down or in the opposite position, order, or direction.
Example
He inverted the glass to let the water drain out.
Il a inversé le verre pour laisser l'eau s'écouler.
C2 noun /ˌɪmprəˈsɑːrioʊ/

impresario

impresario
Meaning
A person who organizes or finances concerts, plays, or operas.
Example
The impresario arranged a series of concerts for the rising star.
L'impresario a organisé une série de concerts pour la star montante.
B2 adjective /ɪnˈækjərət/

Inaccurate

incorrect; erroné; faux
Meaning
not correct; containing errors; wrong
Example
The weather forecast was inaccurate yesterday.
La prévision météorologique était incorrecte hier.
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.
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.
A2 verb /ɪɡˈnɔːr/

ignore

ignorer
Meaning
to refuse to take notice of; to disregard intentionally
Example
She decided to ignore the rude comments.
Elle a décidé d'ignorer les commentaires désobligeants.
C1 adjective /ˌɪlɪˈdʒɪtɪmət/

illegitimate

illégitime
Meaning
Not authorized by law, rules, or standards; not recognized as valid.
Example
The court ruled the contract to be illegitimate.
Le tribunal a jugé que le contrat était illégitime.
B2 noun /ɪnˈvɛstɪˌɡeɪtər/

investigator

bonheur
Meaning
a person who carries out a formal inquiry or investigation
Example
The investigator gathered evidence from the crime scene.
Elle n'a pas pu cacher son bonheur lorsqu'elle a reçu le prix.
C1 adjective /ɪmˈpɜːrsənl/

impersonal

impersonnel
Meaning
not influenced by, showing, or involving personal feelings; lacking human warmth or emotion
Example
The letter was written in a very impersonal style.
La lettre a été écrite dans un style très impersonnel.