fortify
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C1 verb /ˈfɔːrtɪˌfaɪ/

fortify

fortifier
Meaning
To strengthen a place, person, or thing physically or mentally.
Example
They fortified the city walls to protect against invasion.
Ils ont fortifié les murs de la ville pour se protéger contre l'invasion.
C1 adjective /ˈflæʃi/

flashy

voyant, ostentatoire
Meaning
ostentatious or showy in a way that attracts attention
Example
He drove a flashy sports car through the city streets.
Il a conduit une voiture de sport voyante dans les rues de la ville.
C1 adjective /ˈfɛrəl/

feral

sauvage
Meaning
existing in a wild or untamed state; not domesticated
Example
The feral cat roamed the streets at night.
Le chat sauvage errait dans les rues la nuit.
C1 verb /ˈfæbrɪkeɪt/

fabricate

fabriquer
Meaning
to invent or concoct something, often with the intent to deceive; or to construct or manufacture
Example
The witness fabricated his testimony to protect himself.
Le témoin a fabriqué son témoignage pour se protéger.
C1 verb /fɔrˈstɔl/

forestall

prévenir à l'avance
Meaning
to prevent by acting in advance; to anticipate and counter
Example
They forestalled the crisis by taking immediate action.
Ils ont évité la crise en prenant des mesures immédiates.
C1 noun /ˈfɔːrˌfɑːðər/

forefather

ancêtre
Meaning
an ancestor, especially one who was part of an earlier generation of a family or nation
Example
Our forefathers fought for independence.
Nos ancêtres ont lutté pour l'indépendance.
C1 adjective /ˈfeɪl.seɪf/

fail-safe

antifaille
Meaning
designed to prevent failure or accidents; guaranteed to work correctly
Example
The engineers installed a fail-safe mechanism in the nuclear plant.
Les ingénieurs ont installé un mécanisme antifaille dans la centrale nucléaire.
C1 noun /foʊ/

foe

ennemi
Meaning
an enemy or opponent
Example
The knight fought bravely against his foe.
Le chevalier a combattu courageusement contre son ennemi.
C1 verb /flɪntʃ/

flinch

reculer
Meaning
to suddenly move back or away due to fear or pain
Example
He didn’t flinch when the doctor gave him the injection.
Il n'a pas bronché lorsque le docteur lui a donné l'injection.
C1 adjective /ˈflaʊəri/

flowery

fleuri / orné
Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
Elle a écrit une lettre fleurie remplie de phrases poétiques.
C1 noun /fɪˈnɛs/

finesse

subtilité, habileté, raffinement
Meaning
Subtlety and skill; refinement and delicacy in performance or artistry.
Example
The artist painted with great finesse.
L'artiste a peint avec une grande finesse.
C1 noun fluˈɪd.ɪ.ti

fluidity

fluidité
Meaning
The ability of a substance to flow easily; smooth and graceful movement or style.
Example
The fluidity of the dancer's movements was mesmerizing.
La fluidité des mouvements de la danseuse était envoûtante.
C1 adjective /ˈfænsiːd/

fancied

imaginé, désiré
Meaning
imagined, desired, or believed without evidence
Example
He is a fancied suitor in the eyes of the young lady.
Il est un prétendant imaginé aux yeux de la jeune fille.
C1 adjective /ˈfeɪt.fəl/

fateful

décisif ou fatal
Meaning
having significant or disastrous consequences
Example
Their fateful decision changed the course of history.
Leur décision décisive a changé le cours de l'histoire.
C1 adjective /flæmˈbɔɪənt/

flamboyant

flamboyant, coloré ou confiant
Meaning
showy, strikingly bold or colorful; confident and lively
Example
His flamboyant style drew everyone's attention at the party.
Son style flamboyant a attiré l'attention de tout le monde à la fête.
C1 noun /ˈfoʊk.lɔːr/

folk-lore

folklore
Meaning
The traditional beliefs, customs, stories, songs, and practices of a community, passed down through generations.
Example
Bangladeshi folk-lore is rich with myths and legends.
Le folklore français est riche en contes et légendes.
C1 noun /ˈfɔːrdʒəri/

forgery

falsification
Meaning
the crime of making fake documents, money, or artworks
Example
The bank detected a forgery in the signature on the cheque.
La banque a détecté une falsification dans la signature sur le chèque.
C1 adjective /fəˈnætɪk/

Fanatic

fanatique
Meaning
extremely passionate about something; showing excessive enthusiasm or devotion
Example
He is a fanatic supporter of his football team.
Il est un fanatique supporter de son équipe de football.
C1 noun /ˈfɔːrdʒər/

forger

falsificateur
Meaning
a person who makes fake documents, artworks, or signatures
Example
The police arrested a forger who had been selling counterfeit paintings.
La police a arrêté un falsificateur qui vendait des peintures contrefaites.
C1 verb /fɔːrˈɡoʊ/

forgo

renoncer
Meaning
to decide not to do or have something
Example
She decided to forgo dessert to maintain her diet.
Elle a décidé de renoncer au dessert pour maintenir son régime.
C1 noun/verb /ˈfʌrəʊ/

furrow

sillon
Meaning
A long narrow trench made in the ground by a plow; to make wrinkles or grooves.
Example
The farmer plowed furrows in the field.
L'agriculteur a tracé des sillons dans le champ.
C1 noun /fɔːn/

Fawn

faon
Meaning
a young deer; a light yellowish-brown color
Example
The mother deer protects her fawn from predators.
La mère cerf protège son faon des prédateurs.
C1 noun /ˈfɔːrsəm/

foursome

quatuor
Meaning
a group of four people or things, especially in games or social activities
Example
The foursome enjoyed a game of golf together.
Le quatuor a apprécié une partie de golf ensemble.
C1 noun /ˈfʊtˌnoʊt/

foot-note

note de bas de page
Meaning
A note of reference, explanation, or comment placed at the bottom of a page.
Example
The author included a foot-note to explain the historical context.
L'auteur a inclus une note de bas de page pour expliquer le contexte historique.
C1 noun, verb /ˈfɛrɪt/

ferret

furet, chercher ou découvrir quelque chose de manière persistante
Meaning
a small domesticated animal used for hunting; to search or uncover something persistently
Example
He ferreted out the hidden documents.
Il a découvert les documents cachés.
C1 noun /ˈfren.zi/

Frenzy

frénésie
Meaning
a state or period of uncontrolled excitement or wild behavior; intense activity
Example
The announcement of the sale created a shopping frenzy at the mall.
L'annonce de la vente a créé une frénésie de shopping au centre commercial.
C1 noun ˈfɜːr.vɚ

fervor

passion ou enthousiasme
Meaning
Strong passion or enthusiasm for something.
Example
He spoke with great fervor about his vision for the company.
Il a parlé avec beaucoup de ferveur de sa vision pour l'entreprise.
C1 verb /ˈfɔːrfɪt/

forfeit

perdre, renoncer comme pénalité
Meaning
to lose or give up something, usually as a penalty for wrongdoing
Example
He had to forfeit the match after breaking the rules.
Il a dû abandonner le match après avoir enfreint les règles.
C1 adjective /ˈfɔːrθˌraɪt/

forthright

direct
Meaning
Direct and honest in speech or behavior; straightforward.
Example
She was forthright in her criticism of the policy.
Elle a été directe dans sa critique de la politique.
C1 noun /fɔːrˈmæl.ə.ti/

Formality

formalités
Meaning
the rigid observance of rules of convention or etiquette; a thing done simply to comply with requirements
Example
The signing of the contract was just a formality; the deal was already agreed upon.
La signature du contrat n'était qu'une formalité; l'accord était déjà conclu.
C1 adjective /ˈfruːt.ləs/

Fruitless

inutile; vain; futile;
Meaning
unsuccessful; futile; pointless;
Example
After hours of searching, their efforts proved fruitless.
Après des heures de recherche, leurs efforts se sont avérés inutiles.
C1 noun /ˈfjuː.də.lɪ.zəm/

feudalism

féodalisme
Meaning
the social system in medieval Europe in which people worked and fought for nobles who gave them protection and land in return
Example
Feudalism shaped the political structure of medieval Europe.
Le féodalisme a façonné la structure politique de l'Europe médiévale.
C1 noun ˌfɜːr.tɪ.laɪˈzeɪ.ʃən

fertilization

fertilisation
Meaning
The process of adding nutrients to soil to increase crop productivity.
Example
Organic fertilization enhances soil health.
La fertilisation organique améliore la santé du sol.
C1 verb /fɔːrˈkloʊz/

foreclose

saisir
Meaning
to take possession of a property due to the owner's failure to keep up mortgage payments
Example
The bank decided to foreclose on the property after months of missed payments.
La banque a décidé de saisir la propriété après plusieurs mois de paiements manqués.
C1 verb /fɔːrˈtɛl/

foretell

prédire
Meaning
to predict or announce something before it happens
Example
The old man claimed he could foretell the future.
L'homme âgé a affirmé qu'il pouvait prédire l'avenir.
C1 noun /fjuːd/

feud

querelle, inimitié
Meaning
a prolonged and bitter quarrel or conflict, often between families or groups
Example
The two families have been in a feud for generations.
Les deux familles sont en conflit depuis des générations.
C1 adjective /ˈfɜːrtɪv/

furtive

furtif
Meaning
Attempting to avoid notice or attention, typically because of guilt or a belief that discovery would lead to trouble.
Example
He cast a furtive glance at the door before leaving.
Il lança un regard furtif vers la porte avant de partir.
C1 noun /ˈfɔːrwɜːrd/

foreword

préface
Meaning
a short introduction at the beginning of a book, typically written by someone other than the author
Example
The foreword of the book was written by a famous historian.
La préface du livre a été écrite par un historien célèbre.
C1 verb /feɪn/

feign

feindre, simuler
Meaning
to pretend or fake; to give a false appearance of
Example
She feigned illness to avoid going to work.
Elle a feint d'être malade pour éviter d'aller au travail.
C1 noun /ˈfoʊliɪdʒ/

foliage

feuillage
Meaning
The leaves of a plant, collectively.
Example
The autumn foliage looked stunning in the park.
Le feuillage d'automne était impressionnant dans le parc.
C1 noun /ˈflæn.əl/

Flannel

flanelle
Meaning
a soft woven fabric, typically made of wool or cotton and slightly milled and raised
Example
He wore a warm flannel shirt in winter.
Il portait une chemise en flanelle chaude en hiver.
C1 noun /ˌfɜːrmənˈteɪʃən/

fermentation

fermentation, changement chimique par levures ou bactéries
Meaning
a chemical process by which substances like sugar are converted into alcohol or acids using microorganisms
Example
The fermentation of grapes produces wine.
La fermentation des raisins produit du vin.
C1 adjective /ˈfrɔːdjʊlənt/

fraudulent

frauduleux
Meaning
Involving or using deceit, especially criminal deception.
Example
He was arrested for making fraudulent insurance claims.
Il a été arrêté pour avoir fait des demandes frauduleuses d'assurance.
C1 noun /fɑːrs/

farce

farce
Meaning
a comic dramatic work using buffoonery and horseplay, or a ridiculous situation
Example
The meeting turned into a complete farce with everyone arguing.
La réunion est devenue une vraie farce avec tout le monde qui se disputait.
C1 noun /frɪˈvɒləti/

frivolity

frivolité
Meaning
Lack of seriousness; silly or trivial behavior.
Example
The teacher discouraged frivolity during the exam.
Le professeur a découragé la frivolité pendant l'examen.
C1 adjective /ˈfɜːr.vənt/

fervent

fervent, passionné
Meaning
having or showing intense passion or enthusiasm
Example
She gave a fervent speech about climate change.
Elle a prononcé un discours passionné sur le changement climatique.
C1 adjective /frəˈnɛtɪk/

frenetic

frenétique
Meaning
Fast and energetic in a wild or uncontrolled way.
Example
The stock market experienced frenetic trading after the announcement.
Le marché boursier a connu des transactions frénétiques après l'annonce.
C1 verb /ˈfɜːrmɛnt/

ferment

subir un processus chimique où les sucres sont transformés en alcool ou en acide; inciter ou provoquer un changement
Meaning
to undergo a chemical process where sugars are converted to alcohol or acid; to incite or stir up change
Example
The grapes are left to ferment for several weeks.
Les raisins sont laissés à fermenter pendant plusieurs semaines.
C1 adjective /ˈfɪɡərətɪv/

figurative

figuré
Meaning
not literal; using figures of speech or symbolic representation
Example
She used figurative language to describe her feelings.
Elle a utilisé un langage figuré pour décrire ses sentiments.
C1 noun ˌfiː.zəˈbɪl.ə.ti

feasibility

faisabilité
Meaning
The state or degree of being easily or conveniently done; possibility.
Example
The company conducted a feasibility study before launching the project.
L'entreprise a mené une étude de faisabilité avant de lancer le projet.
C1 adjective /freɪl/

frail

fragile
Meaning
Physically weak and delicate.
Example
The old man was too frail to walk without help.
L'homme âgé était trop fragile pour marcher sans aide.
C1 noun /ˈfoʊ.kəs ˈtræk.ɪŋ/

focus tracking

suivi de la concentration
Meaning
A technique of monitoring and maintaining attention on specific tasks or goals.
Example
Proper focus tracking improves productivity.
Un bon suivi de la concentration améliore la productivité.
C1 noun /ˈfen.jʊ.griːk/

Fenugreek

fenugrec
Meaning
an herb whose seeds and leaves are used as a spice in cooking
Example
Fenugreek seeds have a slightly bitter taste and are commonly used in Indian cuisine.
Les graines de fenugrec ont un goût légèrement amer et sont couramment utilisées dans la cuisine indienne.
C1 noun /fəˌsɪlɪˈteɪʃən/

facilitation

facilitation
Meaning
The action of facilitating or making an action or process easier or helping bring about an outcome.
Example
Her facilitation made the meeting run smoothly.
Sa facilitation a permis à la réunion de se dérouler sans heurts.
C1 verb /flɔːnt/

flaunt

fanfaronner
Meaning
to show off something proudly, often to attract attention
Example
She likes to flaunt her new jewelry at parties.
Elle aime fanfaronner ses nouveaux bijoux lors des soirées.
C1 adjective /fərˈlɔːrn/

forlorn

désespéré, triste
Meaning
extremely sad, lonely, or abandoned
Example
The abandoned puppy looked so forlorn in the rain.
Le chiot abandonné avait l'air si triste sous la pluie.
C1 noun /ˈfɔːr.teɪ/ or /fɔːrt/

forte

talent
Meaning
a strong ability or talent; something one does particularly well
Example
Cooking is definitely her forte.
La cuisine est définitivement son talent.
C1 noun /ˈfɔːls.hʊd/

Falsehood

fausseté; mensonge
Meaning
the state of being untrue; a lie
Example
The politician was caught spreading falsehoods about his opponent.
Le politicien a été pris en train de répandre des faussetés à propos de son adversaire.
C1 adjective /ˈfrɪvələs/

frivolous

frivole
Meaning
Not having any serious purpose or value; silly or unimportant.
Example
She dismissed the frivolous complaint quickly.
Elle a rapidement rejeté la plainte frivole.
C1 adjective /ˈfliː.tɪŋ/

fleeting

éphémère
Meaning
Lasting for a very short time; passing quickly.
Example
Happiness can be fleeting, so cherish every moment.
Le bonheur peut être éphémère, alors chérissez chaque moment.
C1 verb /fɔːrˈɡoʊ/

forego

renoncer
Meaning
to decide not to do or have something pleasant or valuable
Example
She decided to forego dessert to maintain her diet.
Elle a décidé de renoncer au dessert pour maintenir son régime.
C1 noun /ˈfɛlən/

felon

criminel
Meaning
a person who has committed a serious crime
Example
The felon was sentenced to ten years in prison.
Le criminel a été condamné à dix ans de prison.
C1 noun /fɪˈnɑːleɪ/

finale

final
Meaning
the last part or conclusion of a performance, event, or series
Example
The concert ended with a spectacular finale.
Le concert s'est terminé par un final spectaculaire.
C1 verb /ˈflʌtər/

flutter

battre des ailes / trembler
Meaning
to move or flap quickly and lightly; to beat or wave with small rapid motions
Example
The butterfly began to flutter its wings in the sunlight.
Le papillon a commencé à battre des ailes sous le soleil.
C1 noun /flæt fɪʃ/

Flat fish

poisson plat
Meaning
a type of fish with a flattened body that lives on the sea floor
Example
Flat fish like sole and flounder are excellent for grilling.
Les poissons plats comme la sole et la limande sont excellents pour le grill.
C1 adjective /ˈfrɪdʒɪd/

Frigid

glacial; froid intense
Meaning
extremely cold; freezing; icy
Example
The frigid weather made it difficult to go outside.
Le temps glacial rendait difficile de sortir dehors.
C1 adjective /frɔːt/

fraught

chargé
Meaning
Filled with or likely to result in something undesirable.
Example
The negotiations were fraught with tension and uncertainty.
Les négociations étaient chargées de tension et d'incertitude.
C1 adjective /ˌfɑːrˈfetʃt/

farfetched

improbable ou peu probable
Meaning
unlikely to happen or be true; improbable
Example
His explanation for being late sounded farfetched.
Son explication pour son retard semblait invraisemblable.
C1 verb /fret/

fret

s'inquiéter
Meaning
to worry or be anxious; to be troubled
Example
Don't fret about the exam results.
Ne t'inquiète pas pour les résultats de l'examen.
C1 noun flɛər

flair

talent naturel
Meaning
A natural ability to do something well.
Example
She has a flair for design, always creating visually stunning work.
Elle a un flair pour le design, créant toujours un travail visuellement impressionnant.
C1 verb /ˈfɔːltər/

falter

hésiter ou perdre de la force ou de l'élan
Meaning
to hesitate or lose strength or momentum
Example
Her voice faltered as she delivered the speech.
Sa voix a faibli lorsqu'elle a prononcé son discours.
C1 adverb /ˈfɪksɪdli/

Fixedly

fixement
Meaning
in a steady, unmoving manner; with intense concentration
Example
He stared fixedly at the painting.
Il regardait fixement la peinture.
C1 noun/adjective /fɔːrˈboʊdɪŋ/

foreboding

présage inquiétant
Meaning
A feeling that something bad will happen; ominous.
Example
She felt a deep sense of foreboding as she entered the abandoned house.
Elle ressentit une profonde sensation de présage inquiétant en entrant dans la maison abandonnée.
C1 adjective /ˈfɔːrsəbl/

forcible

forcé
Meaning
Done by force; using physical strength or power.
Example
The police made a forcible entry into the house.
La police a fait une entrée forcée dans la maison.
C1 adjective /ˈfɑːð.ər.ləs/

fatherless

orphelin de père
Meaning
without a father
Example
The fatherless child relied on the support of his community.
L'enfant orphelin de père comptait sur le soutien de sa communauté.
C1 noun /ˈfʌŋɡəs/

fungus

champignon
Meaning
a spore-producing organism feeding on organic matter, including molds, yeast, and mushrooms
Example
A strange fungus was growing on the old tree.
Un étrange champignon poussait sur l'arbre ancien.
C1 noun /fæd/

fad

mode passagère, tendance
Meaning
a temporary fashion or trend; a short-lived craze
Example
The new diet became a popular fad among teenagers.
Le nouveau régime est devenu une mode passagère chez les adolescents.
C1 adjective /ˈfɪs.kəl/

fiscal

fiscal
Meaning
Relating to government revenue, especially taxes, or public money management.
Example
The government introduced new fiscal policies to control inflation.
Le gouvernement a introduit de nouvelles politiques fiscales pour contrôler l'inflation.
C1 adjective /ˈflæɡɪŋ/

flagging

faiblir, se fatiguer ou perdre de l'enthousiasme
Meaning
becoming tired, weaker, or less enthusiastic
Example
After hours of work, his energy was flagging.
Après des heures de travail, son énergie était en baisse.
C1 adjective /ˈfiːlaɪn/

feline

lié aux chats
Meaning
relating to or characteristic of cats
Example
Her movements were graceful and almost feline in their elegance.
Ses mouvements étaient gracieux et presque félins dans leur élégance.
C1 noun /ˌfɪɡjʊˈriːn/

figurine

figurine décorative
Meaning
a small ornamental statue or model of a human or animal
Example
She bought a porcelain figurine of a dancing ballerina.
Elle a acheté une figurine en porcelaine d'une ballerine dansante.
C1 verb /flɑp/

flop

échec
Meaning
to fall or move heavily and clumsily; to fail completely
Example
The new movie flopped at the box office.
Le nouveau film a échoué au box-office.
C1 adjective /ˈflʌstərd/

flustered

troublé
Meaning
in a state of confusion or agitation
Example
She appeared flustered after being asked so many questions.
Elle semblait troublée après avoir reçu tant de questions.
C1 noun /ˈfænsiər/

fancier

amateur
Meaning
a person who has a special interest in a particular thing or activity, especially animals or hobbies
Example
He is a fancier of rare birds.
Il est un amateur d'oiseaux rares.
C1 noun /ˈfiːtəs/

fetus

fœtus
Meaning
an unborn or unhatched offspring in the womb or egg
Example
The doctor explained the development of the fetus during pregnancy.
Le médecin a expliqué le développement du fœtus pendant la grossesse.
C1 noun ˌflʌk.tʃuˈeɪ.ʃən

fluctuation

fluctuation
Meaning
An irregular rising and falling in number or amount; a variation.
Example
The stock market experiences frequent fluctuation.
Le marché boursier connaît des fluctuations fréquentes.
C1 verb /ˈfʌmbəl/

fumble

brouiller
Meaning
to handle something clumsily or to make mistakes while doing something
Example
He fumbled with the keys and dropped them on the floor.
Il a trébuché avec les clés et les a laissées tomber par terre.
C1 noun /ˈfɪɡjərˌhɛd/

figurehead

tête symbolique
Meaning
a nominal leader with no real power; a symbolic head
Example
The king was merely a figurehead with no real authority.
Le roi était simplement un chef symbolique sans pouvoir réel.
C1 noun /ˈfɔɪeɪr/

foyer

hall d'entrée
Meaning
An entrance hall or lobby in a building.
Example
The guests waited in the hotel foyer before checking in.
Les invités ont attendu dans le hall de l'hôtel avant de s'enregistrer.
C1 adjective /fəˈroʊ.ʃəs/

Ferocious

féroce, sauvage, cruel
Meaning
savagely fierce, cruel, or violent; extremely aggressive
Example
The ferocious storm destroyed many houses in the coastal area.
La tempête féroce a détruit de nombreuses maisons dans la zone côtière.
C1 noun /ˈfeɪvərɪtɪzəm/

favoritism

favoritisme
Meaning
the practice of giving unfair preferential treatment to one person or group
Example
The manager was accused of favoritism towards certain employees.
Le responsable a été accusé de favoritisme envers certains employés.
C1 noun /ˈfɛləni/

felony

crime grave
Meaning
a serious crime, usually punishable by imprisonment for more than one year
Example
He was convicted of a felony and sentenced to ten years in prison.
Il a été reconnu coupable d'un crime grave et condamné à dix ans de prison.
C1 noun /flʌks/

flux

flux
Meaning
continuous change or movement; the rate of flow of something
Example
The company was in a state of constant flux during the reorganization.
L'entreprise était dans un état de flux constant pendant la réorganisation.
C1 noun /ˈfjʊərɔːr/

furor

tumulte
Meaning
An outbreak of public anger or excitement.
Example
The politician's remarks created a furor in the media.
Les remarques du politicien ont créé un furor dans les médias.
C1 noun /fɪkˈseɪ.ʃən/

fixation

fixation ou intérêt obsessionnel pour quelque chose ou quelqu'un
Meaning
An obsessive interest in or feeling about someone or something.
Example
His fixation on perfectionism delayed project completion.
Sa fixation sur le perfectionnisme a retardé l'achèvement du projet.
C1 verb /flaʊt/

flout

mépriser
Meaning
To openly disregard or show contempt for a rule or law.
Example
The company was fined for flouting environmental regulations.
L'entreprise a été condamnée à une amende pour avoir enfreint les réglementations environnementales.
C1 noun ˈflɔː.rə ænd ˈfɔː.nə

flora and fauna

flore et faune
Meaning
The plants and animals of a particular region, habitat, or geological period.
Example
The Galápagos Islands have unique flora and fauna.
Les îles Galápagos ont une flore et faune uniques.
C1 verb /ˈfɪdʒɪt/

fidget

se tortiller, être agité
Meaning
to make small movements, especially because of nervousness or impatience
Example
The child began to fidget during the long lecture.
L'enfant a commencé à bouger pendant la longue conférence.
C1 noun/adjective ˈflɛdʒ.lɪŋ

fledgling

novice, inexpérimenté, nouvellement établi
Meaning
New, inexperienced, newly established.
Example
The fledgling startup needs investment.
La startup novice a besoin d'investissement.
C1 noun /fəˈrɒs.ə.ti/

ferocity

férocité, violence, intensité
Meaning
The state or quality of being ferocious; extreme fierceness or violence.
Example
The storm's ferocity was devastating.
La férocité de la tempête était dévastatrice.
C1 adjective ˈflʌd proʊn

flood-prone

sujette aux inondations
Meaning
Susceptible to flooding; likely to experience floods frequently.
Example
Bangladesh is a flood-prone deltaic nation.
Le Bangladesh est une nation deltaïque sujette aux inondations.
C1 noun /ˈfjuː.dʒə.tɪv/

Fugitive

fugitif
Meaning
a person who has escaped from a place or is in hiding, especially to avoid arrest
Example
The police launched a manhunt to capture the fugitive who escaped from prison.
La police a lancé une chasse à l'homme pour capturer le fugitif qui s'était échappé de la prison.
C1 noun /fruːˈɡæl.ə.ti/

frugality

frugalité
Meaning
The quality of being economical in use or expenditure; not wasteful.
Example
Frugality is essential for saving money effectively.
La frugalité est essentielle pour économiser de l'argent efficacement.
C1 adjective /ˈfɪk.əl/

Fickle

changeant; instable; capricieux;
Meaning
changeable; inconstant; liable to sudden unpredictable change
Example
His fickle nature made it hard to trust his promises.
Sa nature changeante a rendu difficile la confiance dans ses promesses.
C1 noun /ˈfɔːrˌbɛərz/

forebears

ancêtres
Meaning
Ancestors or people in previous generations from whom one is descended.
Example
We must honor the traditions of our forebears.
Nous devons honorer les traditions de nos ancêtres.
C1 noun /ˈflɔː.rə/

flora

la vie végétale trouvée dans une région ou un habitat particulier
Meaning
The plant life found in a particular region or habitat.
Example
The Amazon rainforest is home to a vast flora diversity.
La forêt amazonienne abrite une grande diversité de flore.
C1 adjective /ˈflɪmzi/

flimsy

fragile
Meaning
weak, fragile, or lacking in strength; not convincing
Example
The chair was too flimsy to support his weight.
La chaise était trop fragile pour supporter son poids.
C1 noun /faɪˈnælɪti/

finality

finalité
Meaning
the quality of being final or irreversible; a sense of conclusiveness
Example
The judge's decision gave the case a sense of finality.
La décision du juge a donné au cas un sentiment de finalité.
C1 noun /fəˈsɑːd/

facade

façade
Meaning
The front of a building; a false or superficial appearance
Example
The building's glass facade reflected the sunset.
La façade en verre du bâtiment reflétait le coucher du soleil.
C1 noun/verb /fliːs/

fleece

la laine de mouton
Meaning
The woolly covering of a sheep; as a verb, to swindle or cheat someone.
Example
The farmer sheared the sheep’s fleece carefully.
Le fermier a soigneusement tondu la laine de la brebis.
C1 verb /ˈfɜːr.tɪ.laɪz/

fertilize

fertiliser
Meaning
to make soil or land more fertile by adding substances
Example
Farmers fertilize the fields to increase crop yield.
Les agriculteurs fertilisent les champs pour augmenter le rendement des récoltes.
C1 adjective /ˈfiːbl/

feeble

faible, fragile
Meaning
lacking physical strength or vigor; weak
Example
After the illness, she felt too feeble to stand.
Après la maladie, elle se sentait trop faible pour se lever.
C1 noun /ˈfɔːrɡraʊnd/

foreground

premier plan
Meaning
the part of a scene that is nearest to and in front of the viewer
Example
The flowers in the foreground brightened the picture.
Les fleurs au premier plan ont illuminé l'image.
C1 adverb /ˈfɜː.vənt.li/

Fervently

avec ferveur; ardemment;
Meaning
with passionate intensity; ardently; with great emotion or enthusiasm
Example
She fervently hoped that her dreams would come true.
Elle espérait ardemment que ses rêves se réaliseraient.
C1 noun fɔːlt ˈtɒl.ər.əns

fault-tolerance

tolérance aux pannes
Meaning
The ability of a system to continue operating properly in the event of the failure of some of its components.
Example
Fault-tolerance ensures dependable systems.
La tolérance aux pannes assure des systèmes fiables.
C1 noun /ˈfæs.ɪt/

facet

facette, aspect, partie
Meaning
One of the many aspects or features of something; a particular part or element of something.
Example
Every facet of the project was carefully analyzed.
Chaque facette du projet a été soigneusement analysée.
C1 noun /fəˈnætɪsɪzəm/

fanaticism

fanatisme
Meaning
the quality of being fanatical; extreme zeal or obsession
Example
Religious fanaticism can lead to intolerance and conflict.
Le fanatisme religieux peut mener à l'intolérance et au conflit.
C1 noun /fɪˈdɛl.ɪ.ti/

fidelity

fidélité
Meaning
Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.
Example
A dog's fidelity to its owner is unmatched.
La fidélité d'un chien envers son maître est incomparable.
C1 adjective, adverb (informal, vulgar) /ˈfʌkɪŋ/

fucking

putain (mot vulgaire pour l'emphase)
Meaning
used for emphasis, often expressing anger or frustration (vulgar slang)
Example
It was a fucking disaster!
C'était un putain de désastre!
C1 noun /fiˈæs.koʊ/

fiasco

échec total
Meaning
a complete failure, especially a ludicrous or humiliating one
Example
The event turned into a complete fiasco due to poor planning.
L'événement est devenu un échec total à cause d'une mauvaise planification.
C1 noun /fiːnd/

fiend

démon, personne malfaisante
Meaning
an evil spirit or demon; a wicked or cruel person; someone obsessed with a particular thing
Example
He is a real fiend when it comes to solving puzzles.
Il est un vrai démon lorsqu'il s'agit de résoudre des énigmes.