defile
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C1 verb /dɪˈfaɪl/

defile

profaner
Meaning
to pollute, corrupt, or make dirty
Example
The river was defiled by industrial waste.
La rivière a été profanée par les déchets industriels.
C1 adjective /dɪsˈhɑːrtənd/

Disheartened

démoralisé
Meaning
discouraged; feeling dejected; losing hope or confidence
Example
She felt disheartened after failing the exam twice.
Elle s'est sentie démoralisée après avoir échoué à l'examen deux fois.
C1 noun /diːˈkrɪp.ʃən/

decryption

décryptage
Meaning
The process of converting encrypted data back into its original form so it can be understood.
Example
Hackers attempted decryption of classified data.
Les hackers ont tenté de décrypter des données classifiées.
C1 noun dɪˈpliː.ʃən

depletion

épuisement
Meaning
The gradual reduction or exhaustion of a resource or substance.
Example
Overuse of groundwater leads to depletion of water resources.
Une utilisation excessive de l'eau souterraine entraîne l'épuisement des ressources en eau.
C1 verb ˈdwɪn.dl

dwindle

diminuer
Meaning
To diminish gradually in size, amount, or strength; to become progressively smaller.
Example
His savings dwindled due to unexpected expenses.
Ses économies ont diminué en raison de dépenses imprévues.
C1 noun /dɪˈmiːnər/

demeanour

comportement
Meaning
a person's outward behavior or appearance
Example
Her calm demeanour impressed everyone during the meeting.
Son comportement calme a impressionné tout le monde lors de la réunion.
C1 verb /diːˈhaɪdreɪt/

dehydrate

déshydrater
Meaning
to remove water from something; to lose water or body fluids
Example
Running in the heat can quickly dehydrate you.
Courir sous la chaleur peut rapidement vous déshydrater.
C1 adjective /ˈdɪzməl/

Dismal

sombre; déprimant; triste
Meaning
gloomy; depressing; causing sadness or despair
Example
The weather was dismal with heavy rain and dark clouds.
Le temps était sombre avec de fortes pluies et des nuages sombres.
C1 verb /dɪsˈpruːv/

disprove

démontre que quelque chose est faux
Meaning
to show that something is false or wrong
Example
The scientist worked hard to disprove the old theory.
Le scientifique a travaillé dur pour prouver que la vieille théorie était fausse.
C1 adjective /ˈdesələt/

Desolate

désert; solitaire; stérile
Meaning
deserted; lonely; barren
Example
The abandoned village looked desolate and empty.
Le village abandonné avait l'air désert et vide.
C1 adjective /daɪˈvɜːrsɪfaɪd/

diversified

diversifié
Meaning
Made or having variety in form, nature, or content.
Example
The company adopted a diversified business strategy to reduce risks.
L'entreprise a adopté une stratégie commerciale diversifiée pour réduire les risques.
C1 noun ˌdɪm.ɪˈnjuː.ʃən

diminution

réduction
Meaning
A reduction in the size, extent, or importance of something; decrease.
Example
There has been a diminution in air pollution.
Il y a eu une diminution de la pollution de l'air.
C1 verb /dɪsˈpærɪdʒ/

disparage

dénigrer
Meaning
to criticize someone or something in a way that shows a lack of respect
Example
It is unfair to disparage people for their opinions.
Il est injuste de dénigrer les gens pour leurs opinions.
C1 verb /dɪˈpliːt/

deplete

épuiser
Meaning
to reduce the quantity or supply of something
Example
The long war has depleted the country's resources.
La longue guerre a épuisé les ressources du pays.
C1 noun /dɪˈrɪʒən/

derision

mépris
Meaning
Contemptuous ridicule or mockery.
Example
His ideas were greeted with derision by the audience.
Ses idées ont été accueillies avec mépris par le public.
C1 adjective ˈdɔːn.tɪŋ

daunting

intimidant ou difficile
Meaning
Something that seems intimidating or challenging.
Example
The task seemed daunting, but she completed it successfully.
La tâche semblait intimidante, mais elle l'a terminée avec succès.
C1 adjective /ˈdraʊ.zi/

Drowsy

somnolent; fatigué; léthargique
Meaning
feeling sleepy and lethargic; half asleep; tired
Example
I felt drowsy after the heavy meal.
Je me suis senti somnolent après le repas copieux.
C1 verb /dɪsˈsætɪsfaɪ/

dissatisfy

décevoir
Meaning
to fail to please or meet expectations; to make someone unhappy
Example
The poor service dissatisfies many customers.
Le mauvais service déçoit de nombreux clients.
C1 adjective ˌdet.rɪˈmen.təl

detrimental

détériorant
Meaning
Tending to cause harm; damaging or harmful.
Example
Pollution has detrimental effects on fertility.
La pollution a des effets nuisibles sur la fertilité.
C1 adjective /dɪˈmɪnjətɪv/

diminutive

minuscule
Meaning
extremely or unusually small
Example
Despite his diminutive size, he was a powerful leader.
Malgré sa taille minuscule, il était un leader puissant.
C1 noun /ˈdek.ə.dəns/

decadence

décadence
Meaning
Moral or cultural decline characterized by excessive indulgence in pleasure or luxury.
Example
The novel describes the decadence of the wealthy elite.
Le roman décrit la décadence de l'élite riche.
C1 adjective /dɪˈlæpɪˌdeɪtɪd/

dilapidated

délabré
Meaning
Fallen into disrepair or ruin due to neglect or age.
Example
The family lived in a dilapidated house at the edge of town.
La famille vivait dans une maison délabrée au bord de la ville.
C1 noun /dɪˈprɛsənt/

depressant

dépresseur
Meaning
A drug that reduces functional or nervous activity in the body.
Example
Alcohol acts as a depressant on the central nervous system.
L'alcool agit comme un dépresseur sur le système nerveux central.
C1 adjective /ˈdæʃ.ɪŋ/

Dashing

élégant; attrayant; audacieux;
Meaning
stylish and confident; lively and energetic; attractive and charming
Example
He looked dashing in his new suit.
Il avait l'air élégant dans son nouveau costume.
C1 adjective daɪˈvɜː.dʒənt

divergent

divergent
Meaning
Tending to be different or develop in different directions
Example
Divergent policies create challenges in collaboration.
Les politiques divergentes créent des défis dans la collaboration.
C1 noun /ˈdɛsɪˌbɛl/

decibel

décibel
Meaning
a unit used to measure the intensity of sound
Example
The noise level in the factory exceeded 90 decibels.
Le niveau de bruit dans l'usine a dépassé 90 décibels.
C1 adjective /ˈdrɪəri/

dreary

morose / lugubre
Meaning
dull, bleak, and lifeless; depressing
Example
The long, dreary winter made everyone feel gloomy.
L'hiver long et lugubre a rendu tout le monde triste.
C1 adjective /dɪˈsiːtfəl/

deceitful

trompeur
Meaning
Deliberately misleading or dishonest.
Example
She gave a deceitful answer to hide the truth.
Elle a donné une réponse trompeuse pour cacher la vérité.
C1 noun delˈteɪɪk ˈlændskeɪp

deltaic landscape

paysage deltaïque
Meaning
A geographical area formed by sediment deposits at the mouth of a river, creating a triangular land formation.
Example
Bangladesh has a unique deltaic landscape.
Le Bangladesh possède un paysage deltaïque unique.
C1 verb /dɪsˈhɑːrtn/

dishearten

décourager
Meaning
to cause someone to lose determination or confidence; to discourage
Example
The constant rejection letters began to dishearten the young writer.
Les lettres de rejet constantes ont commencé à décourager le jeune écrivain.
C1 noun /ˌdɪsərˈteɪʃən/

dissertation

thèse
Meaning
A long piece of writing on a particular subject, usually written for a university degree.
Example
She spent two years writing her doctoral dissertation.
Elle a passé deux ans à rédiger sa thèse doctorale.
C1 noun dɪˈfleɪʃən

deflation

déflation
Meaning
Reduction of the general level of prices in an economy.
Example
Deflation often leads to decreased consumer spending.
La déflation entraîne souvent une diminution des dépenses des consommateurs.
C1 noun ˈdaɪ.nə.sti

dynasty

dynastie
Meaning
A line of hereditary rulers of a country; a succession of people from the same family who play a prominent role in business, politics, or another field.
Example
The Ming dynasty ruled China for centuries.
La dynastie Ming a régné sur la Chine pendant des siècles.
C1 noun /ˈdɒɡmə/

dogma

dogme
Meaning
A principle or set of principles laid down by an authority as incontrovertibly true.
Example
The religious leader strictly adhered to traditional dogma.
Le leader religieux s'est strictement conformé au dogme traditionnel.
C1 noun /draɪ fɪʃ/

Dry fish

poisson séché
Meaning
fish that has been preserved by drying in the sun or by other dehydration methods
Example
Dry fish is a popular preserved food in many coastal regions.
Le poisson séché est un aliment conservé populaire dans de nombreuses régions côtières.
C1 noun /ˌdɪsəˈluːʃən/

dissolution

dissolution
Meaning
the act of formally ending or breaking apart something, such as an organization or marriage
Example
The dissolution of the company was announced yesterday.
La dissolution de l'entreprise a été annoncée hier.
C1 noun ˈdɛf.ər.əns

deference

déférence
Meaning
Humble submission and respect.
Example
He showed deference to his elderly mentor.
Il a montré de la déférence envers son mentor âgé.
C1 verb dɪˈsaɪ.fɚ

decipher

déchiffrer, traduire, interpréter
Meaning
To convert something written in code into normal language; to succeed in understanding the meaning of something.
Example
It took hours to decipher the ancient script.
Il a fallu des heures pour déchiffrer l'écriture ancienne.
C1 adjective /dɪˈsperɪŋ/

Despairing

désespérant
Meaning
feeling hopeless; in despair
Example
She felt despairing after losing her job.
Elle se sentait désespérée après avoir perdu son travail.
C1 noun /ˌdɪsbɪˈliːvər/

disbeliever

incrédule
Meaning
a person who does not believe in something, especially a religion or idea
Example
He was called a disbeliever for rejecting the traditional faith.
Il a été appelé incrédule pour avoir rejeté la foi traditionnelle.
C1 noun /dɪˈskrep.ən.si/

discrepancy

discrépance, différence, divergence
Meaning
A lack of compatibility or similarity between two or more facts.
Example
The audit revealed a discrepancy between the reported earnings and actual income.
L'audit a révélé une discrépance entre les bénéfices déclarés et les revenus réels.
C1 adjective /ˈdaɪ.si/

dicey

risqué
Meaning
Risky or unpredictable; potentially dangerous.
Example
Investing in that company looks pretty dicey right now.
Investir dans cette entreprise semble assez risqué en ce moment.
C1 adjective /dɪˈɡreɪdɪd/

degraded

dégradé
Meaning
Reduced in quality, dignity, or condition.
Example
The villagers were forced to live in degraded conditions.
Les villageois ont été forcés de vivre dans des conditions dégradées.
C1 adjective /ˈdjuːtɪfəl/

Dutiful

dévoué; respectueux; obéissant
Meaning
conscientiously fulfilling one's duty; obedient; respectful
Example
She is a dutiful daughter who always helps her parents.
Elle est une fille dévouée qui aide toujours ses parents.
C1 verb /dɔːnt/

daunt

décourager
Meaning
to make someone feel intimidated, discouraged, or less confident
Example
The steep climb did not daunt the experienced hikers.
La montée abrupte n'a pas découragé les randonneurs expérimentés.
C1 verb /dɪˈspɛl/

dispel

dissiper
Meaning
to make a doubt, feeling, or belief disappear
Example
The teacher's explanation dispelled the students' confusion.
L'explication de l'enseignant a dissipé la confusion des élèves.
C1 noun ˌdɛməˈɡræfɪk trænˈzɪʃən

demographic transition

transition démographique
Meaning
A shift in population patterns from high birth and death rates to low birth and death rates as a country develops economically
Example
The demographic transition indicates a shift towards an aging society.
La transition démographique indique un changement vers une société vieillissante.
C1 noun /ˈdaʊri/

dowry

dot
Meaning
Property or money brought by a bride to her husband at marriage.
Example
The dowry tradition is still followed in some cultures.
La tradition du dot est encore suivie dans certaines cultures.
C1 adjective draʊt rɪˈzɪs.tənt

drought-resistant

résistant à la sécheresse
Meaning
Able to survive and grow despite limited water availability or drought conditions.
Example
Drought-resistant crops can survive in arid conditions.
Les cultures résistantes à la sécheresse peuvent survivre dans des conditions arides.
C1 noun dɪˈskrep.ən.siz

discrepancies

divergence
Meaning
Differences between things that should be the same
Example
Discrepancies in regulations delay progress.
Les divergences dans les règlements retardent les progrès.
C1 noun /ˌdɜːrməˈtɑːlədʒi/

dermatology

dermatologie
Meaning
The branch of medicine concerned with the skin and its diseases.
Example
He studied dermatology at medical school.
Il a étudié la dermatologie à l'école de médecine.
C1 noun /ˈdɑːrwɪnɪzəm/

darwinism

darwinisme
Meaning
the theory of biological evolution developed by Charles Darwin, emphasizing natural selection
Example
Darwinism revolutionized the way scientists understood the origin of species.
Le darwinisme a révolutionné la façon dont les scientifiques comprenaient l'origine des espèces.
C1 adjective /dɪˈskriːt/

discrete

discret
Meaning
individually separate and distinct
Example
The course is divided into three discrete modules.
Le cours est divisé en trois modules discrets.
C1 noun /dɪˈvɪnɪti/

divinity

divinité
Meaning
The quality or state of being divine; a deity.
Example
The priest spoke about the divinity of the soul.
Le prêtre a parlé de la divinité de l'âme.
C1 noun daɪˈkɒtəmi

dichotomy

dichotomie
Meaning
A division or contrast between two things that are or are represented as being opposed or entirely different.
Example
The dichotomy between tradition and modernity is often debated.
La dichotomie entre la tradition et la modernité est souvent débattue.
C1 noun ˌdjʊə.rəˈbɪl.ə.ti

durability

durabilité
Meaning
The ability to withstand wear, pressure, or damage; hard-wearing.
Example
The durability of materials affects performance.
La durabilité des matériaux affecte la performance.
C1 noun /daɪˈvɜː.dʒəns/

divergence

divergence
Meaning
The process or state of diverging; a difference or deviation between two or more things.
Example
The divergence in their opinions led to a heated debate.
La divergence dans leurs opinions a conduit à un débat animé.
C1 adjective /dɪˈmɛntɪd/

demented

dément / irrationnel
Meaning
behaving irrationally due to mental illness or extreme excitement
Example
He looked demented after hearing the shocking news.
Il avait l'air dément après avoir entendu la nouvelle choquante.
C1 verb dɪˈsɜːn

discern

distinguer
Meaning
To perceive or recognize something; to distinguish with difficulty by sight or with the other senses.
Example
He could barely discern the distant figure in the fog.
Il a à peine pu distinguer la silhouette lointaine dans le brouillard.
C1 noun /ˈdeɪ.li.ə/

Dahlia

dahlia
Meaning
a garden plant with brightly colored flowers that bloom in summer and autumn
Example
She planted colorful dahlias in her garden last summer.
Elle a planté des dahlias colorés dans son jardin l'été dernier.
C1 noun /ˈdræm.ə.tɪst/

dramatist

dramaturge
Meaning
a person who writes plays
Example
Shakespeare is one of the greatest dramatists in history.
Shakespeare est l'un des plus grands dramaturges de l'histoire.
C1 noun /ˌdɛrɪˈveɪʃən/

derivation

dérivation
Meaning
The origin or development of something from a source.
Example
The derivation of the word comes from Latin.
La dérivation du mot vient du latin.
C1 verb /dɪˈspɜːrs/

disperse

disperser
Meaning
To scatter or spread widely in different directions.
Example
The police used tear gas to disperse the crowd.
La police a utilisé du gaz lacrymogène pour disperser la foule.
C1 noun/verb /dɪsˈdeɪn/

disdain

mépris
Meaning
The feeling that someone or something is unworthy of respect; to regard with contempt.
Example
She looked at the messy room with open disdain.
Elle regarda la chambre en désordre avec du mépris.
C1 noun /dɪˈlɪriəm/

delirium

délire
Meaning
An acutely disturbed state of mind characterized by restlessness, illusions, and incoherence.
Example
The patient experienced delirium after the surgery due to the strong medication.
Le patient a éprouvé un délire après la chirurgie en raison des médicaments forts.
C1 verb /ˈduːdəl/

doodle

gribouiller
Meaning
To draw or scribble absentmindedly, often while thinking about something else.
Example
She doodled flowers in the corner of her notebook during class.
Elle dessinait des fleurs dans le coin de son cahier pendant le cours.
C1 noun /deɪˈbɑː.kəl/

debacle

débâcle
Meaning
A sudden and ignominious failure; a fiasco.
Example
The company's poor management led to a financial debacle.
La mauvaise gestion de l'entreprise a conduit à un débâcle financier.
C1 adjective /ˈdjuːbiəs/

dubious

douteux
Meaning
Hesitating or doubting; not to be relied upon.
Example
She gave him a dubious look after hearing his excuse.
Elle lui a lancé un regard douteux après avoir entendu son excuse.
C1 noun /ˌdiːpɔːrˈteɪʃən/

deportation

déportation
Meaning
The act of expelling a foreigner from a country.
Example
The deportation of hundreds of workers sparked international criticism.
La déportation de centaines de travailleurs a suscité des critiques internationales.
C1 noun /ˈdɪsənˌtɛri/

dysentery

maladie intestinale (diarrhée avec sang et mucus)
Meaning
An infection of the intestines resulting in severe diarrhea with blood and mucus.
Example
Many soldiers suffered from dysentery during the war.
Beaucoup de soldats ont souffert de dysenterie pendant la guerre.
C1 noun ˈdɪskɔrd

discord

désaccord
Meaning
Disagreement or conflict between people or ideas.
Example
Discord among people disrupts societal stability.
Le désaccord entre les gens perturbe la stabilité sociale.
C1 noun /ˈdɛməɡɒɡ/

demagogue

leader démagogue
Meaning
A political leader who seeks support by appealing to popular desires and prejudices rather than by using rational argument.
Example
The crowd was swayed by the fiery speeches of the demagogue.
La foule a été influencée par les discours enflammés du leader démagogue.
C1 verb, noun /ˌdɪsɪˈluːʒən/

disillusion

désillusion
Meaning
to cause someone to realize that something is not as good as they believed
Example
The scandal disillusioned many voters.
Le scandale a désillusionné de nombreux électeurs.
C1 verb /ˈdæb.əl/

dabble

tâtonner
Meaning
To take part in an activity in a casual or superficial way.
Example
He dabbled in painting during his college days.
Il a dabblé dans la peinture pendant ses années universitaires.
C1 adjective /dɪˈspɪrɪtɪd/

dispirited

abattu
Meaning
Having lost enthusiasm, hope, or confidence; dejected.
Example
After losing the match, the team looked dispirited.
Après avoir perdu le match, l'équipe semblait abattue.
C1 noun /ˈdrɛsˌmeɪkər/

dressmaker

couturière
Meaning
A person who makes or alters women's clothing professionally.
Example
The dressmaker crafted a beautiful gown for the bride.
La couturière a créé une belle robe pour la mariée.
C1 verb/adjective /dɪˈdʒɛnəreɪt/

degenerate

dégénérer
Meaning
To decline or deteriorate in quality, character, or condition; or someone with low moral standards.
Example
The once thriving empire began to degenerate into chaos.
L'empire autrefois prospère a commencé à dégénérer en chaos.
C1 noun /dʌsk/

Dusk

crépuscule; tombée de la nuit
Meaning
the period of the day when daylight is fading; twilight
Example
They walked along the beach during dusk, watching the sunset.
Ils marchaient sur la plage pendant le crépuscule, regardant le coucher du soleil.
C1 verb /diːˈfjuːz/

defuse

désamorcer
Meaning
To make a situation less dangerous, tense, or explosive; to remove a fuse from a bomb.
Example
The negotiator helped defuse the tense situation.
Le négociateur a aidé à désamorcer la situation tendue.
C1 adjective /dɪˈspɒndənt/

despondent

désespéré
Meaning
feeling or showing deep hopelessness or discouragement
Example
She felt despondent after losing her job.
Elle s'est sentie désespérée après avoir perdu son travail.
C1 verb, noun /dɪsˈkrɛdɪt/

discredit

discréditer
Meaning
To harm the reputation of someone or something; loss of respect or credibility.
Example
The scandal discredited the politician in the eyes of the public.
Le scandale a discrédité le politicien aux yeux du public.
C1 noun /ˈdɪm.pəl/

Dimple

fossette
Meaning
a small depression in the flesh, either one that exists permanently or one that forms when smiling
Example
Her charming dimples appeared whenever she smiled at the children.
Ses adorables fossettes apparaissaient chaque fois qu'elle souriait aux enfants.
C1 verb /dɪˈsɛləˌreɪt/

decelerate

ralentir
Meaning
to reduce speed; to slow down
Example
The car began to decelerate as it approached the traffic light.
La voiture a commencé à ralentir à l'approche du feu de circulation.
C1 verb /dɪˈfrɔːd/

defraud

frauder
Meaning
to illegally take money or valuables from someone by deception
Example
The company was accused of trying to defraud investors.
L'entreprise a été accusée d'avoir tenté de frauder les investisseurs.
C1 verb /diːˈkoʊd/

decode

décoder
Meaning
to convert a coded message into a readable form; to interpret meaning
Example
The software can decode the hidden message within seconds.
Le logiciel peut décoder le message caché en quelques secondes.
C1 adjective /ˈdek.stər.əs/

dexterous

habile
Meaning
Showing or having skill, especially with the hands; mentally adroit and skillful.
Example
A dexterous programmer can write complex codes effortlessly.
Un programmeur habile peut écrire des codes complexes sans effort.
C1 verb /dɪˈsɛnt/

dissent

désapprouver
Meaning
To hold or express opinions that are different from those officially accepted.
Example
Several members dissented from the majority decision.
Plusieurs membres ont exprimé un désaccord avec la décision majoritaire.
C1 noun /ˌdaɪəˈrɑːmə/

diorama

diorama
Meaning
a three-dimensional model representing a scene, often with miniature figures
Example
The museum displayed a diorama of an ancient village.
Le musée a exposé un diorama d'un village ancien.
C1 noun /dɪˈfɔː.mə.ti/

Deformity

déformation; malformation physique
Meaning
a distorted or unnatural shape or form; physical malformation
Example
The accident caused a permanent deformity in his left hand.
L'accident a causé une déformation permanente dans sa main gauche.
C1 verb /dɪsˈpleɪs/

displace

déplacer
Meaning
to force someone or something out of their usual or original position; to replace or substitute
Example
The new technology will displace many traditional manufacturing jobs.
La nouvelle technologie déplacera de nombreux emplois traditionnels dans la fabrication.
C1 verb /druːp/

droop

pencher
Meaning
to bend or hang downward; to become weak or tired
Example
The flowers began to droop in the heat.
Les fleurs ont commencé à se pencher sous la chaleur.
C1 verb /dɪsˈkʌlər/

discolor

décolorer
Meaning
to change color, especially in a way that spoils the original appearance
Example
The fabric began to discolor after being left in the sun.
Le tissu a commencé à se décolorer après avoir été laissé au soleil.
C1 verb /doʊt/

dote

gâter
Meaning
to show excessive love or fondness for someone or something
Example
She tends to dote on her grandchildren.
Elle a tendance à gâter ses petits-enfants.
C1 verb /dɪˈraɪd/

deride

ridiculiser
Meaning
to mock or ridicule someone or something
Example
The critics derided the new movie for its poor script.
Les critiques ont ridiculisé le nouveau film pour son mauvais scénario.
C1 noun ˈdɪl.ɪ.dʒəns

diligence

diligence
Meaning
Careful and persistent work or effort.
Example
Success requires patience and diligence.
Le succès nécessite de la patience et de la diligence.
C1 noun /ˈdɑːsieɪ/

dossier

dossier
Meaning
A collection of documents about a particular person, event, or subject.
Example
The lawyer presented a dossier of evidence to the court.
L'avocat a présenté un dossier de preuves au tribunal.
C1 noun /ˈdɛljuːdʒ/

deluge

inondation
Meaning
A severe flood; an overwhelming quantity of something.
Example
The town was hit by a deluge of rain in just a few hours.
La ville a été frappée par un déluge de pluie en quelques heures seulement.
C1 noun /ˈduːmz.deɪ/

Doomsday

le jour du jugement dernier; le jour de la fin du monde
Meaning
the last day of the world's existence; a time of catastrophic destruction
Example
The preacher spoke about doomsday and the importance of preparing spiritually.
Le prédicateur a parlé du jour du jugement dernier et de l'importance de se préparer spirituellement.
C1 noun ˈdɛtrɪ.mənt

detriment

dommage, préjudice, détriment
Meaning
Harm, damage, impairment.
Example
Smoking is a detriment to health.
Fumer est un détriment pour la santé.
C1 noun /ˌdiː.mɑːˈkeɪ.ʃən/

Demarcation

démarcation
Meaning
the action of fixing the boundary or limits of something; separation or division
Example
The demarcation between public and private land was clearly marked.
La délimitation entre les terres publiques et privées était clairement marquée.
C1 noun /dɪˈspɜːrʒən/

dispersion

dispersion
Meaning
The action or process of distributing things or people over a wide area.
Example
The dispersion of seeds by the wind helps plants reproduce.
La dispersion des graines par le vent aide les plantes à se reproduire.
C1 noun/verb /dɪsˈkwaɪət/

disquiet

inquiétude
Meaning
A feeling of worry or unease; to make someone feel anxious or uneasy.
Example
The strange silence filled the room with disquiet.
Le silence étrange a rempli la pièce d'inquiétude.
C1 adjective /ˈdɒɡɪd/

dogged

obstiné
Meaning
showing stubborn determination and persistence
Example
She succeeded through dogged determination.
Elle a réussi grâce à sa détermination obstinée.
C1 noun /ˈdel.ɪ.kə.si/

Delicacy

délicatesse; un plat délicat ou coûteux;
Meaning
fineness of texture or structure; a choice or expensive food; sensitivity in handling
Example
The chef prepared a local delicacy that was famous throughout the region.
Le chef a préparé une délicatesse locale qui était célèbre dans toute la région.
C1 verb /dɪsˈmæntəl/

dismantle

démanteler
Meaning
to take apart; to remove or destroy the parts of
Example
Workers will dismantle the old bridge next month.
Les travailleurs démantèleront le vieux pont le mois prochain.
C1 adjective /dɪˈfʌŋkt/

defunct

hors service, disparu
Meaning
No longer existing, operating, or functioning.
Example
The company became defunct after the financial crisis.
L'entreprise est devenue défectueuse après la crise financière.
C1 adjective /dɪsˈdʒɔɪntɪd/

disjointed

désorganisé
Meaning
Lacking order, coherence, or connection; disconnected.
Example
The movie felt disjointed and hard to follow.
Le film semblait désorganisé et difficile à suivre.
C1 noun /dɪˈpɑːzətɔːri/

depository

dépôt, entrepôt
Meaning
a place where things are stored or deposited, especially financial assets
Example
The national depository safeguards all government bonds.
Le dépôt national protège tous les bons du gouvernement.
C1 noun /dɪˈmaɪz/

demise

décès / fin
Meaning
Death or end of something, especially the end of an institution or system.
Example
The sudden demise of the company shocked investors.
La chute soudaine de l'entreprise a choqué les investisseurs.
C1 verb /dɪˈpoʊz/

depose

déposer
Meaning
to remove someone from office or power, especially suddenly and forcefully
Example
The rebels managed to depose the dictator after years of unrest.
Les rebelles ont réussi à déposer le dictateur après des années de troubles.
C1 verb dɪˈlɪnieɪt

delineate

décrire de manière précise
Meaning
To describe or portray something precisely
Example
The artist delineated the scene in intricate detail.
L'artiste a délimité la scène avec des détails complexes.
C1 verb /daɪˈleɪt/

dilate

dilater
Meaning
To make wider, larger, or more open.
Example
The doctor used drops to dilate the patient's pupils.
Le médecin a utilisé des gouttes pour dilater les pupilles du patient.
C1 adjective /diːˈsɛntrəlaɪzd/

decentralized

décentralisé
Meaning
Controlled by several local offices or authorities rather than one single one.
Example
The decentralized system allowed for more control at local levels.
Le système décentralisé a permis un plus grand contrôle au niveau local.
C1 noun /ˈdʊr.i.ən/

Durian

durian
Meaning
a large spiky tropical fruit known for its strong smell and creamy custard-like flesh
Example
Durian is known as the king of fruits in Southeast Asia despite its pungent odor.
Le durian est connu comme le roi des fruits en Asie du Sud-Est malgré son odeur piquante.
C1 verb /ˌdɪsˈmaʊnt/

dismount

descendre
Meaning
to get off or down from something, especially a horse, bicycle, or motorcycle
Example
The rider dismounted from the horse after a long journey.
Le cavalier est descendu du cheval après un long voyage.
C1 adjective /dɪˈvɔɪd/

devoid

vide
Meaning
Completely lacking or without something.
Example
His speech was devoid of any real emotion.
Son discours était vide de toute émotion réelle.
C1 adjective /ˌdɪfəˈrɛnʃəl/

differential

différentiel
Meaning
Relating to or showing a difference; involving a distinction.
Example
There is a differential treatment between the two groups.
Il existe un traitement différentiel entre les deux groupes.
C1 noun /ˈded.lɑk/

Dead-lock

impasse; blocage
Meaning
a situation in which no progress is possible; complete standstill
Example
The negotiations reached a deadlock when neither side would compromise.
Les négociations ont atteint une impasse lorsque les deux parties ne voulaient pas faire de compromis.
C1 verb /dɪˈsweɪd/

dissuade

dissuader
Meaning
To persuade someone not to do something.
Example
She tried to dissuade him from quitting his job.
Elle a essayé de le dissuader de quitter son travail.
C1 adjective /dɪsˈsɪmɪlər/

dissimilar

différent
Meaning
Not alike; different.
Example
Though they are twins, their personalities are dissimilar.
Bien qu'ils soient jumeaux, leurs personnalités sont différentes.
C1 noun /ˌdiː.kɒmpəˈzɪʃən/

decomposition

décomposition
Meaning
the process of decaying or breaking down into simpler parts
Example
The decomposition of leaves enriches the soil.
La décomposition des feuilles enrichit le sol.