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B1 adjective ɪnˈdʌs.tri.əl

industrial

industriel
Meaning
Relating to or characterized by industry.
Example
Industrial sectors boost exports.
Les secteurs industriels stimulent les exportations.
C1 adjective /ɪˈnuːmərəbəl/

Innumerable

innombrable; incalculable; infini
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.
Il y a d'innombrables étoiles dans le ciel nocturne que nous ne pouvons pas voir à l'œil nu.
C2 adjective /ˌɪɡ.nəˈmɪn.i.əs/

ignominious

ignominieux
Meaning
Marked by shame, disgrace, or humiliation.
Example
The team suffered an ignominious defeat in the finals.
L'équipe a subi une défaite ignominieuse en finale.
C2 adjective /ɪmˈpɔːrtʃənət/

importunate

importun
Meaning
Persistent to the point of annoyance or intrusion
Example
The importunate salesman kept calling despite repeated refusals.
Le vendeur importun a continué à appeler malgré les refus répétés.
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.
B2 noun /ɪnˈkwaɪəri/ or /ˈɪnkwəri/

inquiry

enquête / demande d'information
Meaning
An act of asking for information; an investigation into something.
Example
The committee launched an inquiry into the financial irregularities.
Le comité a lancé une enquête sur les irrégularités financières.
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.
C1 noun ˌɪn.fɪlˈtreɪ.ʃən

infiltration

infiltration, accès secret
Meaning
The process of entering or gaining access to an organization or place surreptitiously.
Example
Cybersecurity prevents infiltration into sensitive data.
La cybersécurité empêche l'infiltration des données sensibles.
A1 noun /aɪˈdiː.ə/

Idea

idée; concept; suggestion
Meaning
a thought or suggestion as to a possible course of action; a concept or mental impression
Example
She had a brilliant idea for solving the company's efficiency problem.
Elle avait une idée brillante pour résoudre le problème d'efficacité de l'entreprise.
B1 noun /ɪnˈstrʌkʃənz/

instructions

instructions
Meaning
Detailed information on how something should be done or operated.
Example
Please follow the instructions on the box.
Veuillez suivre les instructions sur la boîte.
B1 adjective /ɪnˈfɔːrməl/

Informal

informel; détendu; décontracté
Meaning
relaxed and friendly; not official or ceremonial; casual
Example
The meeting was informal and relaxed.
La réunion était informelle et détendue.
C1 noun /ɪnˈækjʊrəsi/

inaccuracy

inexactitude
Meaning
lack of accuracy or precision; an incorrect or wrong detail
Example
The report contained several factual inaccuracies.
Le rapport contenait plusieurs inexactitudes.
C2 verb /ˌɪn.trəˈmɪt/

intromit

introduire
Meaning
To insert or introduce something into a place or body.
Example
The doctor carefully intromitted the instrument into the wound.
Le médecin a introduit soigneusement l'instrument dans la plaie.
C1 noun /ˈɪŋklɪŋ/

inkling

indice
Meaning
A slight idea, hint, or suspicion about something.
Example
She had an inkling that he was planning a surprise.
Elle avait une vague idée qu'il préparait une surprise.
C2 adjective /ɪnˈsɛnseɪt/

insensate

insensible
Meaning
lacking physical sensation or empathy; without feeling or sensitivity
Example
The dictator's insensate cruelty shocked the world.
La cruauté insensible du dictateur a choqué le monde.
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 noun /ˌɪndɪˈdʒɛstʃən/

indigestion

indigestion
Meaning
Discomfort or pain in the stomach associated with difficulty in digesting food.
Example
He avoided spicy food because it often gave him indigestion.
Il evitait les aliments epices car cela lui donnait souvent une indigestion.
C1 adjective /ˈɪmpjəd(ə)nt/

impudent

imprudent, insolent
Meaning
not showing due respect for another person; rude
Example
The impudent child talked back to the teacher.
L'enfant impudent a répondu au professeur.
A2 preposition /ɪnˈkluːdɪŋ/

including

y compris
Meaning
used to show that someone or something is part of a larger group
Example
Many people attended the event, including students and teachers.
Beaucoup de personnes ont assisté à l'événement, y compris des étudiants et des enseignants.
B2 noun /ˈaɪrəni/

irony

ironie
Meaning
a situation that is strange or amusing because it is the opposite of what is expected; the use of words to convey the opposite meaning
Example
The irony of the situation was that the winner forgot his own prize.
L'ironie de la situation était que le gagnant avait oublié son propre prix.
C2 adjective /ɪmˈperɪʃəbəl/

Imperishable

imperissable; éternel; immortel
Meaning
not subject to decay; lasting forever; eternal
Example
The imperishable beauty of classical art continues to inspire generations.
La beauté impérissable de l'art classique continue d'inspirer les générations.
C1 noun /ˈɪnflʌks/

influx

afflux
Meaning
A large arrival or flow of people or things.
Example
The city experienced an influx of tourists during the festival.
La ville a connu un afflux de touristes pendant le festival.
A1 adjective /ˈɪntrəstɪŋ/ or /ˈɪntəˌrɛstɪŋ/

interesting

intéressant
Meaning
Arousing curiosity or attention; holding one’s interest.
Example
The documentary about space was very interesting.
Le documentaire sur l'espace était très intéressant.
C2 noun /ˈɪmɪˌteɪtər/

imitator

imitateur
Meaning
a person who copies the behavior, style, or actions of others
Example
He became famous as an imitator of popular singers.
Il est devenu célèbre en tant qu'imitateur de chanteurs populaires.
C2 noun /ˌɪnkrɪˈdjuːləti/

incredulity

incrédulité
Meaning
the state of being unwilling or unable to believe something
Example
She looked at him with incredulity after hearing the strange story.
Elle le regarda avec incrédulité après avoir entendu l'histoire étrange.
C1 noun (plural) /ˈɪndɪˌsiːz/

indices

indices
Meaning
plural form of index; statistical measures or reference points used for comparison
Example
Stock market indices fell sharply after the announcement.
Les indices du marché boursier ont chuté fortement après l'annonce.
A2 noun /ˈɪndʒəri/

injury

blessure
Meaning
Harm or damage to a person’s body caused by an accident or attack.
Example
He suffered a serious injury during the football match.
Il a subi une grave blessure pendant le match de football.
B2 verb /ˌɪntərˈfɪər/

interfere

bonheur
Meaning
to become involved in something that is not your concern; to hinder or obstruct
Example
Parents should not interfere in their children’s personal choices.
Elle ne pouvait pas cacher son bonheur quand elle a reçu le prix.
C1 adjective /ˌɪnɑːrˈtɪkjʊlət/

inarticulate

inaudible
Meaning
Unable to express oneself clearly or effectively in speech or writing.
Example
She became inarticulate with emotion during the speech.
Elle est devenue inaudible avec émotion pendant le discours.
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.
C1 adjective ˌɪn.təˈdɪs.ɪ.plɪ.nər.i

interdisciplinary

interdisciplinaire
Meaning
Relating to more than one branch of knowledge.
Example
The interdisciplinary approach in education enhances problem-solving skills.
L'approche interdisciplinaire en éducation améliore les compétences en résolution de problèmes.
B1 noun /ˌɪntərˈækʃən/

interaction

interaction mutuelle
Meaning
The process of people or things acting upon or influencing each other.
Example
The teacher encouraged more interaction between students.
L'enseignant a encouragé plus d'interaction entre les élèves.
B1 noun ˌɪn.stɪˈtjuː.ʃən

institution

institution
Meaning
An organization founded and united for a specific purpose; an established law, practice, or custom.
Example
Institutions play a crucial role in governance.
Les institutions jouent un rôle crucial dans la gouvernance.
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.
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.
B2 noun /ɪnˈtɛnsəti/

intensity

intensité
Meaning
The quality of being extreme, strong, or forceful in degree.
Example
The intensity of the storm frightened the villagers.
L'intensité de la tempête a effrayé les villageois.
C1 verb /ɪnˈfɛst/

infest

infester
Meaning
to overrun in large numbers, especially so as to cause damage or discomfort
Example
The old house was infested with rats.
La vieille maison était infestée de rats.
C1 adjective /ɪnˈtɛlɪdʒəbl/

intelligible

intelligible
Meaning
Able to be understood; clear enough to be comprehended.
Example
Her speech was barely intelligible over the noise.
Son discours était à peine intelligible à cause du bruit.
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.
C1 adjective /ˌɪnsɪˈdɛntəl/

incidental

incidentel
Meaning
happening as a minor part or in connection with something else
Example
Incidental expenses like snacks and tips were included in the bill.
Les dépenses incidentelles comme les collations et les pourboires ont été incluses dans la facture.
C1 noun /ˌɪnkənˈsɪstənsi/

inconsistency

incohérence
Meaning
The quality of being contradictory, irregular, or not staying the same.
Example
There is an inconsistency between his words and actions.
Il y a une incohérence entre ses paroles et ses actions.
C1 adjective /ɪmˈprɒmp.tjuː/

impromptu

imprévu
Meaning
Done without being planned, organized, or rehearsed; spontaneous.
Example
He gave an impromptu speech at the event.
Il a fait un discours improvisé lors de l'événement.
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.
B1 noun /ˈɪn.flu.əns/

Influence

influence; pouvoir
Meaning
the capacity to have an effect on the character, development, or behavior of someone or something
Example
The teacher's positive influence helped the student overcome his learning difficulties.
L'influence positive du professeur a aidé l'élève à surmonter ses difficultés d'apprentissage.
A2 verb /ˌɪntrəˈduːs/

introduce

présenter
Meaning
to present someone; to bring in for the first time
Example
Let me introduce you to my friend.
Laisse-moi te présenter à mon ami.
C1 noun ɪnˈdʌldʒəns

indulgence

indulgence
Meaning
The practice of allowing oneself to enjoy the pleasure of something.
Example
His indulgence in junk food affected his health.
Son indulgence pour la malbouffe a nui à sa sante.
C1 noun /ˈɪn.floʊ/

inflow

afflux
Meaning
The movement of things such as money, people, or water into a place.
Example
The inflow of tourists boosted the local economy.
L'afflux de touristes a stimulé l'économie locale.
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.
B2 noun /ˈɪntərvəl/

interval

intervalle
Meaning
a period of time between two events or points; a pause or break in activity
Example
There was a short interval between the two performances.
Il y avait un court intervalle entre les deux performances.
C2 adjective /aɪˈtɪnərənt/

itinerant

itinérant
Meaning
Traveling from place to place, especially for work or duty.
Example
The itinerant teacher moved from village to village to educate children.
L'enseignant itinérant se déplaçait de village en village pour enseigner aux enfants.
B2 verb /ɪnˈheɪl/

inhale

inhaler
Meaning
to breathe in; to draw air into the lungs
Example
Take a deep breath and inhale slowly.
Prenez une grande respiration et inhalez lentement.
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.
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 adverb /ɪmˈpɔːtəntli/

importantly

de manière importante
Meaning
in a way that is of great significance or value
Example
Importantly, the report highlights the need for immediate action.
De manière importante, le rapport souligne la nécessité d'une action immédiate.
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.
B2 adjective, noun /ˌɪn.təlˈɛk.tʃu.əl/

intellectual

intellectuel
Meaning
Relating to the intellect; a person who engages in critical thinking and study.
Example
She enjoys intellectual discussions about philosophy.
Elle aime les discussions intellectuelles sur la philosophie.
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.
A1 noun /aɪs/

Ice

glace
Meaning
water that has frozen and become solid
Example
The ice in my drink melted quickly in the hot weather.
La glace dans ma boisson a fondu rapidement par temps chaud.
C2 adjective /ɪnˈtɛsteɪt/

intestate

décédé sans testament
Meaning
Having died without leaving a valid will.
Example
She died intestate, so her assets were distributed by law.
Elle est décédée sans testament, donc ses biens ont été répartis par la loi.
C2 adjective /ɪmˈpɑːlɪtɪk/

impolitic

imprudent
Meaning
Unwise or imprudent; not showing good judgment.
Example
It would be impolitic to criticize them openly.
Il serait imprudent de les critiquer ouvertement.
B2 verb /ɪnˈflɪkt/

inflict

infliger
Meaning
to cause something unpleasant or painful to be suffered by someone or something
Example
The storm inflicted considerable damage to the city.
La tempête a infligé des dégâts considérables à la ville.
A2 adjective, noun /ɪˈtæliən/

italian

bonheur
Meaning
relating to Italy, its people, or its language; a person from Italy
Example
She loves Italian food.
Elle n'a pas pu cacher son bonheur lorsqu'elle a reçu le prix.
B1 noun ˈɪn.də.stri

industry

industrie
Meaning
Economic activity concerned with the processing of raw materials and manufacture of goods in factories.
Example
The industry focuses on luxury experiences.
L'industrie se concentre sur des expériences de luxe.
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.
C1 adjective /ɪnˈfleɪtɪd/

inflated

gonflé
Meaning
excessively increased in size, value, or importance; filled with air or gas
Example
The company faced criticism for its inflated prices.
L'entreprise a fait face à des critiques en raison de ses prix gonflés.
C1 verb /ɪnˈfjʊərieɪt/

infuriate

mettre en colère
Meaning
To make someone extremely angry.
Example
His careless remarks infuriated the entire team.
Ses remarques imprudentes ont mis en colère toute l'équipe.
C2 noun /ɪnˈtɛstəsi/

intestacy

décès sans testament
Meaning
The condition of dying without having made a valid will.
Example
His estate was divided according to the laws of intestacy.
Sa succession a été divisée selon les lois de l'intestat.
C1 adjective /ˌɪn.səˈbɔːr.dɪ.nət/

insubordinate

insubordonné
Meaning
Defiant of authority; disobedient to orders.
Example
The insubordinate employee refused to follow the manager's instructions.
L'employé insubordonné a refusé de suivre les instructions du gestionnaire.
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 adjective /ɪnˈseɪn/

insane

fou
Meaning
mentally ill; extremely foolish or unreasonable
Example
The idea of jumping off the cliff seemed insane.
L'idée de sauter du rocher semblait folle.
B2 verb /ˈaɪ.sə.leɪt/

isolate

isoler
Meaning
To separate something or someone from others.
Example
Doctors tried to isolate the patient to prevent the spread of infection.
Les médecins ont essayé d'isoler le patient pour éviter la propagation de l'infection.
B2 verb /ɪtʃ/

itch

démangeaison
Meaning
to feel an urge to scratch; to have a restless desire
Example
My skin itches from the mosquito bites.
Ma peau me démange à cause des piqûres de moustiques.
C1 noun /ɪmˈpɛdɪmənt/

impediments

obstacles
Meaning
A hindrance or obstruction in doing something; things that prevent progress or achievement.
Example
Economic impediments often hinder social development.
Les obstacles économiques entravent souvent le développement social.
C1 verb /ɪnˈkrɪmɪˌneɪt/

incriminate

incriminer
Meaning
to make someone appear guilty of a crime or wrongdoing
Example
The new evidence could incriminate the suspect in the robbery case.
La nouvelle preuve pourrait incriminer le suspect dans l'affaire de vol.
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.
B2 noun /ˈɪn.flu.ən.sər/

Influencer

influenceur, personne qui recommande des produits
Meaning
A person with the ability to influence potential buyers of a product or service by promoting or recommending the items on social media.
Example
Social media influencers shape consumer preferences.
Les influenceurs des réseaux sociaux façonnent les préférences des consommateurs.
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.
C1 verb /ˌɪn.trəˈspekt/

introspect

introspecter
Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
Il se livre souvent à de l'introspection avant de prendre des décisions importantes.
C1 noun ɪˌræʃ.ənˈæl.ɪ.ti

irrationality

irrationalité, absence de logique, déraison
Meaning
The quality of being illogical or unreasonable; lack of rational thought.
Example
His decision was driven by complete irrationality.
Sa décision a été guidée par une irrationalité totale.
C2 verb /ɪnˈdɒktrɪˌneɪt/

indoctrinate

endoctriner
Meaning
To teach someone to fully accept a set of beliefs or ideas without question.
Example
The regime tried to indoctrinate the youth with propaganda.
Le régime a tenté d'endoctriner la jeunesse avec de la propagande.
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 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 noun /ɪnˈtɛstɪn/

intestine

intestin
Meaning
The part of the digestive system where food is digested and absorbed, extending from the stomach to the anus.
Example
The doctor explained how nutrients are absorbed in the small intestine.
Le médecin a expliqué comment les nutriments sont absorbés dans l'intestin grêle.
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 noun /ɪnˈædɪkwəsi/

inadequacy

insuffisance
Meaning
lack of sufficient ability, quality, or strength; a feeling of not being good enough
Example
She struggled with feelings of inadequacy at work despite her strong qualifications.
Elle luttait contre un sentiment d’insuffisance au travail malgré ses solides qualifications.
C2 adjective ˌɪm.pəˈtɜː.bə.bəl

imperturbable

imperturbable
Meaning
Unable to be upset or excited; not easily disturbed.
Example
His imperturbable nature made him a great leader.
Sa nature imperturbable faisait de lui un grand leader.
B2 noun /ˈɪmɪɡrənt/

immigrant

immigrant
Meaning
a person who comes to live permanently in a foreign country
Example
The city has welcomed many new immigrants this year.
La ville a accueilli de nombreux nouveaux immigrants cette année.
C1 noun ˌɪn.toʊˈneɪ.ʃən

intonation

intonation
Meaning
The rise and fall of tone in speech and pronunciation.
Example
Proper intonation enhances the clarity of a speech.
Une intonation appropriée améliore la clarté d'un discours.
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 adjective ɪnˈdɪdʒɪnəs

indigenous

indigène
Meaning
Originating or occurring naturally in a particular place; native.
Example
Indigenous plants are well adapted to the local environment.
Les plantes indigènes sont bien adaptées à l'environnement local.
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 adjective/noun /ɪnˈkɑːrnədiːn/

incarnadine

rouge incarnat
Meaning
a bright crimson or pinkish-red color
Example
The sky turned incarnadine at sunset.
Le ciel est devenu rouge incarnat au coucher du soleil.
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.
C2 noun /ɪnˈɛrənsi/

inerrancy

inerrance
Meaning
the belief or quality of being free from error; absolute correctness
Example
Some religious groups strongly affirm the inerrancy of their sacred texts.
Certains groupes religieux affirment fermement l'inerrance de leurs textes sacrés.
C2 verb /ɪmˈbruː/

imbrue

tacher
Meaning
To stain, especially with blood.
Example
His hands were imbrued with blood after the battle.
Ses mains étaient tachetées de sang après la bataille.
C1 adverb /ɪnˈdɛfɪnətli/

indefinitely

indéfiniment
Meaning
for an unlimited or unspecified period of time
Example
The project has been postponed indefinitely.
Le projet a été reporté indéfiniment.
B2 noun /ˌɪm.ɪˈteɪ.ʃən/

Imitation

imitation; copie; réplique
Meaning
the action of using someone or something as a model; a copy of something original
Example
His imitation of the famous actor was so good that everyone burst into laughter.
son imitation de l'acteur célèbre était tellement bonne que tout le monde a éclaté de rire.
C2 adjective /ɪˈrɛzəluːt/

irresolute

indécis
Meaning
uncertain or indecisive; lacking determination
Example
He stood irresolute at the crossroads, unsure which path to take.
Il resta indécis au carrefour, ne sachant quel chemin prendre.
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 noun /ˈɪmpjʊdəns/

impudence

impudence
Meaning
Rude and disrespectful behavior.
Example
The student's impudence shocked the entire class.
L'impudence de l'étudiant a choqué toute la classe.
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.
C2 adjective /ɪˈlɪbərəl/

illiberal

illibéral
Meaning
Opposed to liberal principles; restricting freedom of thought or behavior.
Example
The government was criticized for its illiberal policies.
Le gouvernement a été critiqué pour ses politiques illibérales.
B1 verb /ɪnˈtend/

intend

avoir l'intention
Meaning
to plan or have in mind as a purpose; to mean
Example
I intend to finish this project by tomorrow.
J'ai l'intention de finir ce projet d'ici demain.
C2 adjective /ɪnˈɡreɪʃiˌeɪtɪŋ/

ingratiating

flatteur
Meaning
Charming or flattering in a way intended to gain favor.
Example
His ingratiating smile made everyone trust him quickly.
Son sourire flatteur a fait en sorte que tout le monde lui fasse rapidement confiance.
C2 adjective /ˌaɪsəʊˈθɜːrməl/

isothermal

isotherme
Meaning
Having or maintaining equal or constant temperature.
Example
The experiment was conducted under isothermal conditions.
L'expérience a été réalisée dans des conditions isothermes.
B1 adjective /ɪˈmiːdiət/

immediate

immédiat
Meaning
happening or done without delay
Example
The doctor gave her immediate attention.
Le médecin lui a donné une attention immédiate.
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.
B1 adjective ˈɪnəveɪtɪv

innovative

innovant
Meaning
Featuring new methods; advanced and original
Example
Innovative strategies are required to combat pollution.
Des stratégies innovantes sont nécessaires pour lutter contre la pollution.
C2 noun /ˈɪrɪtənsi/

irritancy

irritation
Meaning
the quality or state of causing irritation; legal or formal invalidation
Example
The constant noise became an irritancy to the neighbors.
Le bruit constant est devenu une irritation pour les voisins.
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.
L'installation du câble sous-marin est presque terminée.
C1 adjective /ɪnˈvɛntɪv/

inventive

inventif
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.
L'inventeur était connu pour ses solutions inventives aux problèmes quotidiens.
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.
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 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 /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 adjective /ˌɪmpɪˈkjuːniəs/

impecunious

pauvre
Meaning
Having little or no money; poor.
Example
He grew up in an impecunious family.
Il a grandi dans une famille pauvre.
C2 noun /ɪnˈsaɪzər/

incisor

incisive
Meaning
a narrow-edged tooth at the front of the mouth, adapted for cutting
Example
The dentist noted that his upper left incisor was chipped.
Le dentiste a remarqué que son incisif supérieur gauche était fissuré.
C2 verb /ɪnˈveɪɡəl/

inveigle

manipuler
Meaning
To persuade someone to do something by deception or flattery.
Example
She inveigled him into signing the contract.
Elle l'a dupé pour qu'il signe le contrat.
C2 noun /ˌɪnkænˈteɪʃən/

incantation

incantation
Meaning
a series of words used as a magic spell or charm
Example
The wizard chanted an incantation to summon the spirits.
Le magicien a récité une incantation pour invoquer les esprits.
C2 adjective /ˌɪntəˈrɒɡətəri/

interrogatory

interrogatif
Meaning
expressed in the form of a question; relating to questioning
Example
The lawyer’s interrogatory tone made the witness uncomfortable.
Le ton interrogatif de l'avocat a rendu le témoin mal à l'aise.
C1 noun /ˌɪnsəˈfɪʃənsi/

insufficiency

insuffisance
Meaning
The state of not being enough or not being adequate.
Example
The project failed due to the insufficiency of funds.
Le projet a échoué en raison de l'insuffisance des fonds.