ideological
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C1 adjective /ˌaɪ.di.əˈlɒdʒ.ɪ.kəl/

ideological

idéologique
Meaning
Relating to or based on a system of ideas or beliefs.
Example
The two parties are divided by deep ideological differences.
Les deux partis sont divisés par de profondes divergences idéologiques.
C1 noun /ˌɪrɪˌspɒnsəˈbɪləti/

irresponsibility

irresponsabilité
Meaning
lack of responsibility or accountability; failure to act in a reliable or sensible way
Example
The accident was caused by his irresponsibility at work.
L'accident a été causé par son irresponsabilité au travail.
C1 adjective ɪˈluː.sər.i

illusory

illusoire
Meaning
Based on illusion; not real although seeming to be.
Example
His sense of security was entirely illusory.
Son sentiment de sécurité était entièrement illusoire.
C1 noun /ˌɪnɪkˈspɪəriəns/

inexperience

inexpérience
Meaning
Lack of knowledge or skill in a particular activity or field.
Example
His inexperience in handling negotiations was evident.
Son inexpérience dans la gestion des négociations était évidente.
C1 noun /ɪmˌpɒsəˈbɪlɪti/

impossibility

impossibilité
Meaning
the state or fact of being impossible; something that cannot be done or achieved
Example
Finishing the project in one day was an impossibility.
Finir le projet en un jour était une impossibilité.
C1 noun /ɪnˈsɜːrdʒənt/

insurgent

insurgé
Meaning
A person who rises in revolt against authority or government.
Example
The army arrested several insurgents after the attack.
L'armée a arrêté plusieurs insurgés après l'attaque.
C1 adjective /ɪmˈpɛtʃ.u.əs/

impetuous

impulsif
Meaning
Acting or done quickly and without thought or care; impulsive.
Example
His impetuous decision led to unexpected consequences.
Sa décision impulsive a conduit à des conséquences inattendues.
C1 adjective ɪnˈsaɪ.sɪv

incisive

incisif
Meaning
Intelligently analytical and clear-thinking; showing clear thought and good understanding of what is important.
Example
His incisive comments revealed the core issues.
Ses commentaires incisifs ont révélé les problèmes clés.
C1 adjective /ɪnˈstɪŋk.tɪv/

instinctive

instinctif, naturel, automatique
Meaning
Based on instinct; done without conscious thought; natural and automatic.
Example
His instinctive reaction saved his life.
Sa réaction instinctive lui a sauvé la vie.
C1 adjective /ɪˈrɛvəkəbl/

irrevocable

irrévocable
Meaning
Not able to be revoked, changed, or undone.
Example
She made an irrevocable decision to leave the company.
Elle a pris une décision irrévocable de quitter l'entreprise.
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 adjective, noun /ɪnˈdɪkətɪv/

indicative

indicatif
Meaning
Serving as a sign or expression of something; in grammar, a mood used to make factual statements.
Example
His tone was indicative of his frustration.
Son ton était indicatif de sa frustration.
C1 adverb /ˌɪn.dɪˈskrɪm.ɪ.nət.li/

Indiscriminately

indiscriminément
Meaning
without making careful distinctions; randomly; without discrimination
Example
The company fired employees indiscriminately without considering their performance.
L'entreprise a licencié les employés indifféremment sans prendre en compte leur performance.
C1 adjective /ɪnˈkɒmp(ə)rəbl/

incomparable

incomparable
Meaning
Without an equal in quality or excellence; matchless.
Example
The view from the mountain was incomparable.
La vue depuis la montagne était incomparable.
C1 verb /ɪnˈskraɪb/

inscribe

graver
Meaning
to write or carve words or symbols on a surface
Example
They inscribed her name on the trophy.
Ils ont gravé son nom sur le trophée.
C1 noun /ˌɪnklɪˈneɪʃən/

inclination

inclination
Meaning
A natural tendency or urge to act or feel in a particular way.
Example
She has an inclination towards helping others.
Elle a une inclination à aider les autres.
C1 adjective ɪnˈkʌm.bənt

incumbent

obligatoire
Meaning
necessary for (someone) as a duty or responsibility.
Example
It is incumbent upon all citizens to obey the law.
Il est obligatoire pour tous les citoyens d'obéir à la loi.
C1 verb /ˈɪnkjʊˌbeɪt/

incubate

incuber
Meaning
to keep eggs, cells, or organisms at the right conditions for development
Example
The hen will incubate the eggs until they hatch.
La poule incubera les œufs jusqu'à ce qu'ils éclosent.
C1 adjective /ˌɪmprɪˈsaɪs/

imprecise

imprécis
Meaning
Not exact or accurate; vague.
Example
His explanation was too imprecise to be helpful.
Son explication était trop imprécise pour être utile.
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.
C1 noun /ˈɪtʃ.i.nəs/

itchiness

démangeaison
Meaning
The quality or condition of feeling an irritating sensation on the skin that causes a desire to scratch.
Example
Eye itchiness often leads to rubbing.
Les démangeaisons oculaires entraînent souvent des frottements.
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 verb /ɪnˈtɪmɪdeɪt/

intimidate

intimider
Meaning
To frighten or overawe someone, especially to make them do what one wants.
Example
The bully tried to intimidate the smaller kids.
Le harceleur a essayé d'intimider les enfants plus jeunes.
C1 adjective /ˈɪmpətənt/

impotent

impotent
Meaning
Lacking power, ability, or strength to take effective action.
Example
The citizens felt impotent against the corrupt system.
Les citoyens se sont sentis impuissants face au système corrompu.
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

instantané
Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
Le changement de température a été presque instantané.
C1 adjective /ɪnˈstrʌktɪv/

instructive

instructif
Meaning
useful and informative; providing knowledge or instruction
Example
The lecture was highly instructive and engaging.
La conférence était très instructive et captivante.
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 /ɪnˈflɛksəbl/

inflexible

inflexible
Meaning
Not able to bend or change; unwilling to change ideas or behavior.
Example
His inflexible attitude made negotiations difficult.
Son attitude inflexible rendait les négociations difficiles.
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 /ɪnˈvæljʊəbl/

invaluable

inestimable
Meaning
Extremely useful or indispensable.
Example
Her advice proved invaluable to my success.
Son conseil s'est avéré inestimable pour mon succès.
C1 adjective /ɪˈniː.bri.eɪ.tɪd/

inebriated

ivrogne
Meaning
under the influence of alcohol; drunk
Example
He stumbled into the room completely inebriated.
Il est entré dans la pièce complètement ivre.
C1 adjective /ˌɪn.dɪˈspen.sə.bəl/

indispensable

indispensable
Meaning
Absolutely necessary, essential
Example
Water is indispensable for human survival.
L'eau est indispensable à la survie humaine.
C1 noun /ɪnˌkɑːsəˈreɪʃən/

incarceration

incarcération
Meaning
the state of being imprisoned or confined
Example
The criminal faced years of incarceration for his crimes.
Le criminel a purgé des années d'incarcération pour ses crimes.
C1 noun /ˌɪnækˈtɪvɪti/

inactivity

inactivité
Meaning
the state of not being active physically or mentally; lack of action
Example
Prolonged inactivity can negatively affect both physical and mental health.
Une inactivité prolongée peut nuire à la santé physique et mentale.
C1 adjective /ˌɪndɪˈskraɪbəbəl/

Indescribable

indescriptible
Meaning
impossible to describe or express in words; beyond description
Example
The beauty of the sunset was indescribable.
La beauté du coucher de soleil était indescriptible.
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.
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.
C1 noun /ˌɪndɪɡˈneɪʃən/

indignation

indignation
Meaning
Strong displeasure or anger caused by something unjust, offensive, or insulting.
Example
Public indignation grew after the unfair verdict.
L'indignation publique a grandi après le verdict injuste.
C1 adjective /ɪnˈsɛnsəbl/

insensible

insensible
Meaning
Unconscious; unaware of or indifferent to something.
Example
He was insensible to the cold as he lay in the snow.
Il était insensible au froid lorsqu'il était allongé dans la neige.
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.
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 noun /ˌɪntəkəˈnɛktɪvɪti/

interconnectivity

interconnexion
Meaning
The state of being interconnected or the degree of connectivity between components
Example
The rise of interconnectivity has transformed global communication.
L'essor de l'interconnectivité a transformé la communication mondiale.
C1 noun /ˌɪmpɔːrˈteɪʃən/

importation

importation
Meaning
The act of bringing goods or services into a country from abroad
Example
The importation of luxury goods is strictly regulated.
L'importation de produits de luxe est strictement régulée.
C1 noun ˌɪnˈsaɪtfʊlnɪs

insightfulness

perspicacité, capacité d'analyse
Meaning
The capacity to gain an accurate and deep intuitive understanding of a person or thing.
Example
His insightfulness helped solve the complex problem.
Sa perspicacité a aidé à résoudre le problème complexe.
C1 noun /ˈɪntərˌpleɪ/

interplay

interaction
Meaning
The way in which two or more things have an effect on each other.
Example
The interplay between culture and technology shapes modern life.
L'interaction entre la culture et la technologie façonne la vie moderne.
C1 verb /ɪˈluːmɪneɪt/

illuminate

illuminer
Meaning
To light up or make something clearer.
Example
Streetlights illuminate the road at night.
Les réverbères illuminent la route la nuit.
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.
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.
C1 adjective /ɪnˈveɪsɪv/

invasive

invasif
Meaning
Tending to spread harmfully, intruding aggressively, or encroaching beyond proper boundaries.
Example
The doctor explained that the procedure was minimally invasive.
Le médecin a expliqué que la procédure était peu invasive.
C1 adjective /ɪmˈpɑːrʃəl/

Impartial

impartial; neutre
Meaning
treating all sides fairly; unbiased; neutral
Example
A good judge must remain impartial throughout the trial.
Un bon juge doit rester impartial tout au long du procès.
C1 noun /ɪnˈvɜːrʒən/

inversion

inversion
Meaning
A reversal of the normal order, position, or relationship.
Example
In poetry, inversion is often used to create emphasis.
Dans la poésie, l'inversion est souvent utilisée pour créer de l'emphase.
C1 noun /ɪnˈsɒm.ni.ə/

Insomnia

insomnie
Meaning
habitual sleeplessness; inability to sleep; the condition of being unable to sleep
Example
Her chronic insomnia made it difficult for her to concentrate during work hours.
Son insomnie chronique lui rendait difficile de se concentrer pendant les heures de travail.
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 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.
C1 adjective /ɪnˈtræk.tə.bəl/

intractable

incontrôlable
Meaning
Difficult or impossible to manage, control, or solve.
Example
The conflict has become an intractable problem.
Le conflit est devenu un problème incontrôlable.
C1 noun /ˈɪmɪnəns/

imminence

imminence, état de proximité
Meaning
the state of being about to happen
Example
The imminence of the storm forced people to take shelter.
L'imminence de la tempête a forcé les gens à chercher un abri.
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 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.
C1 adjective ˌɪn.trəˈspek.tɪv

introspective

introspectif
Meaning
Characterized by or given to introspection; examining one's own thoughts and feelings.
Example
Writers tend to be highly introspective individuals.
Les écrivains ont tendance à être des individus très introspectifs.
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.
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.
C1 adjective /ɪnˈtrɛpɪd/

intrepid

intrépide
Meaning
fearless and adventurous, often used humorously
Example
The intrepid traveler explored the jungle alone.
Le voyageur intrépide a exploré la jungle seul.
C1 noun /ɪˈnɜː.ʃə/

Inertia

inertie; manque d'activité
Meaning
a tendency to do nothing or remain unchanged; lack of activity or movement
Example
The team's inertia prevented them from adapting to the rapidly changing market conditions.
L'inertie de l'équipe les a empêchés de s'adapter aux conditions du marché en évolution rapide.
C1 adjective /ɪnˈseɪʃəbl̩/

insatiable

insatiable
Meaning
impossible to satisfy; always wanting more
Example
Her insatiable curiosity drove her to read every book in the library.
Sa curiosité insatiable l'a poussée à lire tous les livres de la bibliothèque.
C1 noun /ˌɪntərˈmɪʃən/

intermission

entracte
Meaning
A pause or break, especially during a performance or event.
Example
The play had a twenty-minute intermission.
La pièce a eu un entracte de vingt minutes.
C1 noun/verb /ˈɪnsɛns/

incense

encens / irriter
Meaning
a substance burned for its sweet smell (noun); to make very angry (verb)
Example
The smell of incense filled the temple, but his rude words incensed her.
L'odeur de l'encens remplissait le temple, mais ses mots impolis l'ont mise en colère.
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 noun /ɪnˌtɪmɪˈdeɪʃən/

intimidation

intimidation
Meaning
The action of frightening or threatening someone to make them do something.
Example
The workers reported cases of intimidation by the management.
Les travailleurs ont signalé des cas d'intimidation par la direction.
C1 adjective /ɪnˈfæləbl̩/

infallible

infaillible
Meaning
incapable of making mistakes or being wrong
Example
Her judgment seemed infallible in matters of finance.
Son jugement semblait infaillible en matière de finances.
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 verb /ɪmˈpɛər/

impair

altérer
Meaning
to weaken or damage something, especially a function or ability
Example
Smoking can impair your lung capacity.
Fumer peut nuire à votre capacité pulmonaire.
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.
C1 adjective /ˈɪnfəməs/

infamous

infâme
Meaning
well known for some bad quality or deed
Example
The dictator was infamous for his cruelty.
Le dictateur était infâme pour sa cruauté.
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 verb /ɪnˈfleɪt/

inflate

gonfler
Meaning
to fill with air or gas so it expands; to increase excessively or artificially
Example
The mechanic inflated the tire to the correct pressure.
Le mécanicien a gonflé le pneu à la bonne pression.
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.
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 /ɪnˈtɜːrmənəbl/

interminable

interminable
Meaning
Seemingly endless; having no apparent end.
Example
The meeting felt interminable and exhausting.
La réunion semblait interminable et épuisante.
C1 verb /ɪmˈplɔːr/

implore

implorer
Meaning
To beg someone earnestly or desperately to do something.
Example
She implored him to stay with her.
Elle lui implora de rester avec elle.
C1 adjective /ˌɪrɪˈspɛktɪv/

Irrespective

indifférent; sans tenir compte
Meaning
without taking something into account; regardless of
Example
All students will be treated equally, irrespective of their background.
Tous les étudiants seront traités de manière égale, indépendamment de leurs antécédents.
C1 verb /ˈɪnfɪltreɪt/

infiltrate

infiltrer
Meaning
to secretly enter or gain access to a place or group
Example
The spies managed to infiltrate the enemy base.
Les espions ont réussi à infiltrer la base ennemie.
C1 adverb, adjective /ˌɪnkɑːɡˈniːtoʊ/

incognito

incognito
Meaning
In disguise or with one's identity concealed.
Example
The celebrity traveled incognito to avoid the paparazzi.
La célébrité a voyagé incognito pour éviter les paparazzis.
C1 adjective /ˌɪnˌkɒnsɪˈkwɛnʃəl/

inconsequential

insignifiant
Meaning
Not important or significant; too small to matter.
Example
The mistake was minor and inconsequential.
L'erreur était mineure et insignifiante.
C1 noun ɪnˈflɛk.ʃən

inflection

inflexion
Meaning
The change in pitch or tone of voice when speaking for emphasis.
Example
His inflection kept the audience engaged.
Son inflexion a captivé le public.
C1 adjective /ˌɪnɪkˈsplɪkəbl/

inexplicable

inexpliquable
Meaning
Impossible to explain or understand.
Example
The sudden disappearance of the file was inexplicable.
La disparition soudaine du fichier était inexpliquable.
C1 noun ˌɪm.pʌlˈsɪv.ɪ.ti

impulsivity

impulsivité
Meaning
The tendency to act quickly and without thought or care; lack of self-control.
Example
His impulsivity led him to make reckless choices.
Son impulsivité l'a conduit à prendre des décisions imprudentes.
C1 verb ɪˈnɔː.ɡjə.reɪ.tɪd

inaugurated

inauguré
Meaning
Begin or introduce (a system, policy, or period) formally.
Example
The organization was inaugurated officially.
L'organisation a été inaugurée officiellement.
C1 adjective /ɪnˈfriːkwənt/

infrequent

peu fréquent
Meaning
Happening rarely or not often.
Example
He made infrequent visits to his hometown after moving abroad.
Il faisait des visites peu fréquentes dans sa ville natale après avoir déménagé à l'étranger.
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 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.
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 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.
C1 adjective /ˈɪnbɔːrn/

Inborn

inné; congénital; inhérent
Meaning
existing from birth; natural; inherent
Example
She has an inborn talent for music.
Elle a un talent inné pour la musique.
C1 adjective /ɪmˈpæʃənd/

impassioned

passionné
Meaning
Filled with or showing great emotion.
Example
She gave an impassioned speech about human rights.
Elle a prononcé un discours passionné sur les droits de l'homme.
C1 noun /ˌɪn.trəˈvɜːr.ʒən/

introversion

introversion
Meaning
The tendency to be inward-looking and shy, preferring solitary activities.
Example
Her introversion made it difficult for her to enjoy large parties.
Son introversion rendait difficile pour elle de profiter des grandes fêtes.
C1 adverb ɪnˈtrɪn.zɪ.kli

intrinsically

intrinsèquement
Meaning
In a way that is naturally or inherently part of something's essential nature.
Example
Some people are intrinsically motivated to learn.
Certaines personnes sont intrinsèquement motivées à apprendre.
C1 adjective /ɪnˈkɒŋɡruəs/

incongruous

incongru
Meaning
Not fitting in with or suitable for the surroundings.
Example
His jokes were incongruous during the serious meeting.
Ses blagues étaient incongrues lors de la réunion sérieuse.
C1 verb /ɪnˈvɪɡ.ər.eɪt/

invigorate

revigorer
Meaning
To give strength or energy to someone or something.
Example
A morning walk can invigorate both body and mind.
Une promenade matinale peut revigorer le corps et l'esprit.
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 /ˌɪndɪˈstɪŋkt/

indistinct

indistinct
Meaning
Not clear or sharply defined; vague or blurred.
Example
The sound of voices was indistinct in the distance.
Le son des voix était indistinct au loin.
C1 adjective /ˌɪn.ɪˈfɛk.tʃu.əl/

ineffectual

inefficace
Meaning
Not producing any or the desired effect; lacking the ability or qualities to achieve a purpose.
Example
The manager’s ineffectual leadership caused the team to lose motivation.
Le leadership inefficace du manager a causé la perte de motivation de l'équipe.
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

infidélité
Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
Leur mariage a pris fin à cause de son infidélité.
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.
C1 adjective ɪnˈdʒiː.ni.əs

ingenious

ingénieux
Meaning
Showing inventiveness and skill; clever, original, and inventive.
Example
His ingenious ideas transformed modern physics.
Ses idées ingénieuses ont transformé la physique moderne.
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.
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.
C1 verb /ɪnˈkɜːr/

incur

encourir
Meaning
To bring upon oneself something undesirable, usually as a result of actions.
Example
He incurred a fine for parking in the wrong place.
Il a encouru une amende pour avoir garé sa voiture au mauvais endroit.
C1 adjective /ɪnˈkwɪzɪtɪv/

inquisitive

inquisitif
Meaning
Curious or eager to learn and ask questions.
Example
The inquisitive child asked endless questions about the stars.
L'enfant inquisitif a posé d'innombrables questions sur les étoiles.
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.
C1 noun /ɪnˈdʌstriəsnəs/

industriousness

diligence
Meaning
The quality of being hardworking and diligent.
Example
His industriousness earned him a promotion at work.
Sa diligence lui a valu une promotion au travail.
C1 adjective /ɪˈnɒkjuəs/

innocuous

inoffensif
Meaning
Not harmful or offensive.
Example
His remark was completely innocuous and not meant to offend anyone.
Son commentaire était totalement inoffensif et n'avait pas l'intention d'offenser qui que ce soit.
C1 adjective /ɪnˈsteɪbəl/

instable

instable
Meaning
not stable; liable to change, collapse, or fail; lacking firmness or reliability
Example
The instable political situation worried foreign investors.
La situation politique instable a inquiété les investisseurs étrangers.
C1 noun /ˈɪm.pæs/

impasse

impasse
Meaning
A situation where no progress is possible.
Example
The negotiations reached an impasse, delaying the agreement.
Les négociations ont atteint un impasse, retardant l'accord.
C1 adjective /ɪˈnɛpt/

inept

inepte
Meaning
lacking skill or ability; clumsy or incompetent
Example
His inept handling of the situation made it worse.
Sa gestion inepte de la situation a empiré les choses.
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

incubateur
Meaning
a device or environment that provides suitable conditions for eggs, cells, or infants to develop
Example
The premature baby was placed in an incubator for care.
Le bébé prématuré a été placé dans un incubateur pour ses soins.
C1 verb /ɪnˈfleɪm/

inflame

enflammer
Meaning
to arouse strong feelings or provoke anger; to cause inflammation in the body
Example
The politician's remarks served to inflame public opinion.
Les remarques du politicien ont servi à enflammer l'opinion publique.
C1 adjective ɪmˈpɛkəbl

impeccable

impeccable
Meaning
In accordance with the highest standards; faultless.
Example
His impeccable taste in fashion was admired by all his peers.
Son goût impeccable en mode était admiré par tous ses pairs.
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.
C1 noun /ɪmˈprɪzənmənt/

imprisonment

emprisonnement
Meaning
the act of putting someone in prison; the state of being confined as punishment
Example
He faced imprisonment for violating the court order.
Il a fait face à l'emprisonnement pour avoir violé l'ordre du tribunal.
C1 noun ˌɪndɪˈspensəbl̩ ˈkɒmpɪtənsi

indispensable competency

compétence indispensable
Meaning
Essential skill or ability that cannot be done without; a crucial capability that is absolutely necessary.
Example
Digital literacy is an indispensable competency in the 21st century.
L'alphabétisation numérique est une compétence indispensable au XXIe siècle.
C1 noun /ˈɪnˌmeɪt/

inmate

détenu
Meaning
a person confined to an institution such as a prison or hospital
Example
The prison has over a thousand inmates.
La prison a plus de mille détenus.