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C1 adjective /dæft/

daft

fou
Meaning
Silly or foolish.
Example
It was a daft idea to go hiking without water.
C'était une idée folle de partir en randonnée sans eau.
C1 noun /ˌdɛməˈlɪʃən/

demolition

démolition
Meaning
the act or process of destroying a building or structure
Example
The demolition of the old factory took several weeks.
La démolition de l'ancienne usine a pris plusieurs semaines.
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 verb /dɪˈspɛns/

dispense

distribuer
Meaning
To distribute or provide something, especially in portions.
Example
The machine dispenses clean drinking water.
La machine distribue de l'eau potable propre.
C1 noun /ˈdæmpər/

damper

quelque chose qui réduit ou diminue la force, l'effet ou l'excitation
Meaning
something that reduces or lessens the force, effect, or excitement
Example
The cancellation of the trip put a damper on their enthusiasm.
L'annulation du voyage a réduit leur enthousiasme.
C1 adjective /ˈdaʊ.ər/

dour

sévère
Meaning
relentlessly severe, stern, or gloomy in manner or appearance
Example
His dour expression made the meeting uncomfortable.
Son expression sévère rendait la réunion inconfortable.
C1 verb /daʊs/

douse

éteindre / verser
Meaning
to pour liquid over; to extinguish a fire or light
Example
Firefighters doused the flames with water.
Les pompiers ont éteint les flammes avec de l'eau.
C1 adjective /dɪˈfɪʃənt/

Deficient

déficient
Meaning
not having enough of a specified quality or ingredient; lacking or inadequate
Example
His diet was deficient in essential vitamins.
Son régime était déficient en vitamines essentielles.
C1 noun /ˈdɪɡnɪˌtɛri/

dignitary

personne importante
Meaning
a person considered to be important because of high rank or office
Example
Several foreign dignitaries attended the state banquet.
Plusieurs dignitaires étrangers ont assisté au banquet d'État.
C1 verb /dɪsˈɡrʌntl/

disgruntle

mécontenter
Meaning
to make someone dissatisfied or discontented
Example
The unfair treatment disgruntled the workers.
Le traitement injuste a mécontenté les travailleurs.
C1 adjective /ˈdaʊn.kæst/

downcast

abattu
Meaning
feeling sad, dejected, or with lowered eyes
Example
He looked downcast after hearing the bad news.
Il avait l'air abattu après avoir entendu la mauvaise nouvelle.
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 noun ˌdɪs.æmˌbɪɡ.juˈeɪ.ʃən

disambiguation

désambiguïsation
Meaning
The removal of ambiguity by making something clear and unambiguous.
Example
The AI system applies disambiguation to refine text understanding.
Le système IA applique la disambiguation pour affiner la compréhension du texte.
C1 adjective dɪˈskrɪmɪnətɔːri

discriminatory

discriminatoire
Meaning
Making or showing an unfair or prejudicial distinction between different categories of people or things.
Example
Discriminatory policies triggered protests.
Les politiques discriminatoires ont déclenché des protestations.
C1 adjective /drəˈkoʊniən/

draconian

draconien
Meaning
Extremely harsh and severe, especially laws or rules.
Example
The new regulations were criticized as draconian.
Les nouvelles régulations ont été critiquées comme draconiennes.
C1 verb /dɪˈflɛkt/

deflect

détourner / éviter
Meaning
to cause something to change direction; to avoid answering directly
Example
The shield deflected the incoming arrow.
Le bouclier a dévié la flèche entrante.
C1 noun /diːˌtɒksɪfɪˈkeɪʃən/

detoxification

détoxification
Meaning
The process of removing toxic substances from a living organism.
Example
Detoxification helps to cleanse the body of harmful substances.
La détoxification aide à nettoyer le corps des substances nuisibles.
C1 adjective /dɪˈklærətɪv/

declarative

déclaratif
Meaning
relating to a statement that declares something; in grammar, a sentence that makes a statement
Example
A declarative sentence simply states a fact or opinion.
Une phrase déclarative énonce simplement un fait ou une opinion.
C1 verb /daɪˈluːt/

dilute

diluer
Meaning
To make a liquid thinner or weaker by adding water or another solvent.
Example
You should dilute the juice with water before serving it to children.
Vous devez diluer le jus avec de l'eau avant de le servir aux enfants.
C1 verb /ˈdæŋɡəl/

dangle

pendre
Meaning
to hang loosely or swing freely
Example
The keys dangled from his belt.
Les clés pendaient de sa ceinture.
C1 verb /dɪsˈfɪɡjər/

disfigure

défigurer
Meaning
to spoil or damage the appearance of something
Example
The fire disfigured the old building.
Le feu a défiguré le vieux bâtiment.
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 noun /dɪˈfɛkʃən/

defection

défection
Meaning
The act of abandoning one’s country, cause, or group in favor of another.
Example
The politician’s defection shocked his supporters.
La défection du politicien a choqué ses partisans.
C1 adjective /dɪsˈkɔːrdənt/

discordant

discordant
Meaning
disagreeing or clashing; harsh and jarring in sound
Example
The discordant notes of the band hurt our ears.
Les notes discordantes du groupe ont blessé nos oreilles.
C1 verb /dɪˈtɛst/

detest

détester
Meaning
To dislike intensely or hate.
Example
I detest waking up early on weekends.
Je déteste me lever tôt le week-end.
C1 noun /dɪsˈɒn.ər/

Dishonour

honte
Meaning
a state of shame or disgrace; lack of honor or integrity; failure to fulfill obligations
Example
Breaking his promise brought dishonour to his name and family legacy.
Rompre sa promesse a apporté la honte à son nom et à l'héritage de sa famille.
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 /dɪˈmɔrəˌlaɪz/

demoralize

démoraliser
Meaning
to cause someone to lose confidence or hope
Example
The constant criticism demoralized the young athlete.
La critique constante a démoralisé le jeune athlète.
C1 adjective /dɪˈvɪzəbl/

divisible

divisible
Meaning
Capable of being divided by another number without leaving a remainder.
Example
Twelve is divisible by three and four.
Douze est divisible par trois et quatre.
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 noun /dɪˈfjuːʒən/

diffusion

diffusion
Meaning
the spreading of something more widely or the movement of particles from high to low concentration
Example
The diffusion of information on social media is rapid.
La diffusion de l'information sur les réseaux sociaux est rapide.
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 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 verb /ˈdaʊn.pleɪ/

downplay

minimiser
Meaning
to make something seem less important than it really is
Example
The company tried to downplay the risks of the new product.
L'entreprise a essayé de minimiser les risques du nouveau produit.
C1 verb diːˈsɛn.sɪ.taɪz

desensitize

désensibiliser
Meaning
To make someone less sensitive or reactive to something through repeated exposure.
Example
Constant exposure to violence can desensitize people.
Une exposition constante à la violence peut désensibiliser les gens.
C1 verb /dɪˈfɔːrm/

deform

déformer
Meaning
to change the shape or form of something, especially in a way that makes it ugly or damaged; to distort
Example
The intense heat began to deform the plastic container.
La chaleur intense a commencé à déformer le récipient en plastique.
C1 verb /dɪˈbeɪs/

debase

dégrader
Meaning
to reduce the quality, value, or dignity of something
Example
Corruption can debase the values of a society.
La corruption peut dégrader les valeurs d'une société.
C1 noun dɪˈdʒɛnəˌreɪtɪv dɪˈzizɪz

degenerative diseases

maladies dégénératives
Meaning
Medical conditions that involve the deterioration or progressive decline of tissues, organs, or functions
Example
Degenerative diseases are common in an aging population.
Les maladies dégénératives sont courantes dans une population vieillissante.
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 adjective /dɪˈrɒɡətɔːri/

derogatory

dérogatoire
Meaning
Showing a critical or disrespectful attitude.
Example
The article contained derogatory comments about the politician.
L'article contenait des commentaires dérogatoires à propos du politicien.
C1 noun /ˈdɑː.mə.saɪl/

domicile

domicile
Meaning
A person's legal residence or permanent home.
Example
He declared Canada as his legal domicile.
Il a déclaré le Canada comme son domicile légal.
C1 noun ˌdɛɡrəˈdeɪʃən

degradation

dégradation
Meaning
The condition or process of degrading or being degraded.
Example
Soil degradation due to overuse is a growing issue.
La dégradation des sols due à une utilisation excessive est un problème croissant.
C1 noun /drɑːft/ (UK), /dræft/ (US)

draught

courant d air
Meaning
a current of cool air in a room or another confined space; also a portion of liquid, especially beer, served from a barrel or cask
Example
She closed the window to keep out the cold draught.
Elle a referme la fenetre pour ne pas laisser entrer le courant d air froid.
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 noun /dɪˈten.ʃən/

Detention

détention; emprisonnement temporaire
Meaning
the action of detaining someone or being detained in official custody
Example
The student received detention for repeatedly disrupting the class.
L'étudiant a reçu une détention pour avoir perturbé la classe à plusieurs reprises.
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 /ˌdɪs.əˈreɪ/

disarray

désordre
Meaning
A state of disorganization or untidiness; confusion or disorder.
Example
His desk was in complete disarray.
Son bureau était dans un désordre complet.
C1 noun, adjective /dɪˈfiːtɪst/

defeatist

défaitiste
Meaning
A person who expects or is excessively ready to accept failure; showing a tendency to expect defeat.
Example
His defeatist attitude discouraged the rest of the team.
Son attitude défaitiste a découragé le reste de l'équipe.
C1 verb /ˈdɪsləkeɪt/

dislocate

déboîter
Meaning
To disturb the normal position of something, especially a joint in the body.
Example
He dislocated his shoulder while playing football.
Il a disloqué son épaule en jouant au football.
C1 verb /dɪˈfjuːz/

diffuse

diffuser
Meaning
to spread over a wide area or among a large number of people
Example
The smell of fresh bread diffused through the entire house.
L'odeur du pain frais s'est diffusée dans toute la maison.
C1 noun ˌdɪdʒɪˈnɛəreɪʃən

degeneration

dégénérescence
Meaning
The process of decline or deterioration in structure or function.
Example
The degeneration of brain cells leads to cognitive decline.
La dégénérescence des cellules cérébrales conduit à un déclin cognitif.
C1 noun dɪˌzɝː.t̬ə.fɪˈkeɪ.ʃən

desertification

désertification
Meaning
The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
Example
Deforestation accelerates desertification.
La déforestation accélère la désertification.
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.
C1 noun ˌdep.əˈzɪʃ.ən

deposition

dépôt, action de déposer quelque chose
Meaning
The action of depositing something; the laying down of matter by a natural process.
Example
River deposition leads to the formation of new landmasses.
La déposition des rivières mène à la formation de nouvelles terres.
C1 noun /ˌdev.əˈtiː/

Devotee

dévote; adepte
Meaning
a person who is very interested in and enthusiastic about someone or something
Example
As a devotee of classical music, she attended every concert in the city.
En tant que dévote de la musique classique, elle assistait à chaque concert de la ville.
C1 noun /dɪˈkɔː.rəm/

Decorum

décorum; bienséance; dignité
Meaning
behavior in keeping with good taste and propriety; dignified and appropriate conduct
Example
The diplomat maintained perfect decorum throughout the heated negotiations.
Le diplomate a maintenu un décorum parfait tout au long des négociations animées.
C1 noun /ˈdeɪˌbreɪk/

daybreak

aurore
Meaning
The time in the morning when daylight first appears; dawn.
Example
They set out on their journey at daybreak.
Ils ont commencé leur voyage à l'aube.
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 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 /daɪˈsɛkʃən/

dissection

dissection
Meaning
the act of cutting apart or analyzing something in detail, especially a body or structure
Example
The dissection of the specimen revealed important details about its structure.
La dissection de l'échantillon a révélé des détails importants sur sa structure.
C1 noun ˌdiː.sen.trə.laɪˈzeɪ.ʃən

decentralization

décentralisation
Meaning
The transfer of authority from central to local government.
Example
Decentralization promotes regional autonomy.
La décentralisation favorise l'autonomie régionale.
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 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 /ˈdiːvə/

diva

chanteuse célèbre
Meaning
a famous female singer; a woman who is admired or behaves like a star
Example
The pop diva performed her latest hit to a cheering crowd.
La diva de la pop a interprété son dernier tube devant une foule en délire.
C1 noun dɪˈsʌɪsɪvnɪs

decisiveness

capacité de décision
Meaning
The ability to make decisions quickly and effectively.
Example
His decisiveness during the crisis saved the company.
Sa capacité à prendre des décisions pendant la crise a sauvé l'entreprise.
C1 noun /dɪˈfɪʃ.ən.si/

Deficiency

déficience; manque; insuffisance
Meaning
a lack or shortage of something; inadequacy or insufficiency
Example
The doctor diagnosed a vitamin D deficiency in the patient's blood test.
Le médecin a diagnostiqué une carence en vitamine D lors du test sanguin du patient.
C1 noun /ˌdɪfəˈrɛnʃɪˈeɪʃən/

differentiation

différenciation, distinction
Meaning
The action or process of differentiating or distinguishing between things.
Example
Differentiation from competitors can create a unique market position.
La différenciation des concurrents peut créer une position unique sur le marché.
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 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 /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 noun /ˈdaɪnəˌmoʊ/

dynamo

machine qui génère de l'électricité; une personne avec une grande énergie et enthousiasme
Meaning
A machine that generates electricity; a person with great energy and enthusiasm.
Example
She is the real dynamo behind the success of the company.
Elle est la véritable dynamo derrière le succès de l'entreprise.
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 verb /daɪˈvɛst/

divest

désinvestir
Meaning
to strip away possessions, rights, or assets; to rid oneself of
Example
The company decided to divest its unprofitable division.
L'entreprise a décidé de se désinvestir de sa division non rentable.
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 noun /dɪˈluːʒən/

delusion

illusion
Meaning
A false belief or impression maintained despite being contradicted by reality.
Example
He lived under the delusion that he was invincible.
Il vivait sous l'illusion qu'il était invincible.
C1 noun /dɪˈsɜːn.mənt/

discernment

discernement
Meaning
The ability to judge well or understand something correctly; keen insight.
Example
His discernment in business decisions made him successful.
Son discernement dans les décisions commerciales l'a rendu réussi.
C1 adjective deft

deft

habile
Meaning
Neatly skillful and quick in one's movements; dexterous and adroit.
Example
The artist's deft hands created a masterpiece.
Les mains habiles de l'artiste ont créé une œuvre d'art.
C1 verb /dɪˈnəʊt/

denote

dénoter
Meaning
To be a sign of; to indicate or mean something.
Example
A red flag denotes danger.
Un drapeau rouge dénote un danger.
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 /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 /ˈdestatəʊt/

Destitute

démuni; pauvre; sans argent ni biens
Meaning
extremely poor; without money or possessions
Example
Many families became destitute after the economic collapse.
De nombreuses familles sont devenues démunies après l'effondrement économique.
C1 noun /dɪˌlɪb.əˈreɪ.ʃənz/

deliberations

délibérations
Meaning
Careful consideration and discussion before making decisions.
Example
Deliberations on sustainability continued for hours.
Les délibérations sur la durabilité ont duré des heures.
C1 verb /dɪˈɡreɪd/

degrade

dégrader
Meaning
To lower in dignity, quality, or value; to treat with disrespect or to deteriorate.
Example
Harsh words can degrade a person's confidence.
Les mots durs peuvent dégrader la confiance d'une personne.
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 adjective /ˈdiːviəs/

devious

sournois
Meaning
Skillful at using underhanded tactics to achieve goals; not straightforward.
Example
He used a devious plan to gain control of the company.
Il a utilisé un plan sournois pour prendre le contrôle de l'entreprise.
C1 adjective /ˈdeɪnti/

dainty

délicat et joli
Meaning
Delicately small, pretty, and often considered elegant.
Example
She wore a dainty necklace made of pearls.
Elle portait un collier délicat fait de perles.
C1 verb /dɪsˈɑːrm/

disarm

désarmer
Meaning
to take weapons away from someone; to make someone feel less hostile
Example
The soldiers were ordered to disarm the rebels.
Les soldats ont été ordonnés de désarmer les rebelles.
C1 verb /ˈdɛsɪmeɪt/

decimate

détruire
Meaning
To destroy or kill a large proportion of something.
Example
The wildfire decimated the forest.
L'incendie a ravagé la forêt.
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 dəˌmɛstɪˈkeɪʃən

domestication

domestication
Meaning
The process of taming an animal and keeping it as a pet or for farm produce.
Example
Domestication of animals has been crucial for human survival.
La domestication des animaux a été cruciale pour la survie humaine.
C1 noun /ˌdɛtəˈneɪʃən/

detonation

détonation
Meaning
The act of exploding or causing something to explode.
Example
The sudden detonation shook the entire building.
La détonation soudaine a secoué tout le bâtiment.
C1 noun /ˈdiːviəns/

deviance

déviance
Meaning
Behavior that differs from accepted social or moral standards.
Example
The book studies deviance in urban youth culture.
Le livre étudie la déviance dans la culture urbaine des jeunes.
C1 noun /ˈdɔːrˌkiːpər/

doorkeeper

portier
Meaning
A person whose job is to guard or manage the entrance of a building or room.
Example
The doorkeeper checked everyone’s passes before they entered the hall.
Le doorkeeper a vérifié les passes de tous avant qu'ils n'entrent dans la salle.
C1 noun /djʊˈrɛs/

duress

contrainte
Meaning
threats, violence, or pressure used to force someone to do something
Example
She signed the contract under duress.
Elle a signé le contrat sous la contrainte.
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 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 /ˌdɪs.ɪˈluː.ʒən.mənt/

disillusionment

désillusion
Meaning
A feeling of disappointment resulting from the discovery that something is not as good as one believed it to be.
Example
Many people experience disillusionment after unrealistic expectations.
Beaucoup de gens ressentent de la désillusion après des attentes irréalistes.
C1 noun /draɪ ˈtʃɪl.i/

Dry Chilli

piment sec
Meaning
dried chili peppers used as spice for adding heat to food
Example
The recipe calls for two dry chillies to make it spicy.
La recette demande deux piments secs pour le rendre épicé.
C1 noun /ˈdaɪhɑːrd/

diehard

fanatique
Meaning
A person who strongly resists change and remains loyal to a belief or cause.
Example
He is a diehard fan of classic rock music.
Il est un fanatique inconditionnel du rock classique.
C1 noun /ˈdɛmənˌstreɪtər/

demonstrator

démonstrateur, manifestant
Meaning
a person who shows how something works or takes part in a public protest
Example
The demonstrators marched peacefully through the city streets.
Les manifestants ont défilé pacifiquement dans les rues de la ville.
C1 adjective /ˈdɑːsəl/ or /ˈdəʊsaɪl/

docile

docile
Meaning
easily managed, taught, or controlled; submissive
Example
The docile puppy quickly learned new tricks.
Le chiot docile a rapidement appris de nouveaux tours.
C1 verb /dɪˈmiːn/

demean

dévaloriser
Meaning
to cause someone to lose dignity or respect
Example
The manager demeaned his employees with rude remarks.
Le gestionnaire a dévalorisé ses employés avec des remarques grossières.
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 /dɪˈmiːnər/

demeanor

comportement
Meaning
a person's outward behavior or appearance
Example
Her calm demeanor impressed everyone at the meeting.
Son comportement calme a impressionné tout le monde lors de la réunion.
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 adjective /dɪˈmɒnstrəbl/

demonstrable

démontrable
Meaning
clearly able to be shown or proven
Example
There was demonstrable evidence that he was innocent.
Il y avait des preuves démontrables qu'il était innocent.
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 /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 noun /djuːˈɛt/

duet

duo
Meaning
a musical performance by two singers or instrumentalists
Example
They sang a beautiful duet together on stage.
Ils ont chanté un magnifique duo ensemble sur scène.
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 noun /ˌdɪspɛnˈseɪʃən/

dispensation

dispense
Meaning
An exemption from a rule or usual requirement; a system of order, government, or control.
Example
The school granted him a special dispensation to skip the exam due to illness.
L'école lui a accordé une dispense spéciale pour ne pas passer l'examen en raison de sa maladie.
C1 noun /dɪˌsem.ɪˈneɪ.ʃən/

dissemination

diffusion
Meaning
The action or fact of spreading something, especially information, widely.
Example
The dissemination of false information is a major issue.
La diffusion de fausses informations est un problème majeur.
C1 verb /ˌdɪsɪmˈbɑːrk/

disembark

débarquer
Meaning
To leave a ship, aircraft, or other vehicle.
Example
The passengers disembarked from the plane after landing.
Les passagers sont descendus de l'avion après l'atterrissage.
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 verb /dʌb/

dub

doubler
Meaning
to give a name or label to something; to add a soundtrack to a film or recording
Example
The movie was dubbed into several languages for international release.
Le film a été doublé en plusieurs langues pour sa sortie internationale.
C1 verb /ˌdɪsəˈlaʊ/

disallow

interdire
Meaning
to refuse to allow or accept something
Example
The referee disallowed the goal for offside.
L'arbitre a disallowé le but pour hors-jeu.
C1 noun /ˌdɜːrməˈtɑːlədʒɪst/

dermatologist

dermatologue
Meaning
A doctor who specializes in the treatment of skin diseases.
Example
She consulted a dermatologist for her skin allergy.
Elle a consulté un dermatologue pour son allergie à la peau.
C1 noun /dɪˈsiːt/

Deceit

tromperie; fraude; mensonge
Meaning
the action or practice of deceiving someone by concealing or misrepresenting the truth
Example
His deceit was discovered when the truth about his qualifications came to light.
Sa tromperie a été découverte lorsque la vérité sur ses qualifications a été révélée.
C1 verb /dɛlv/

delve

approfondir
Meaning
To investigate deeply; to dig into a subject or area.
Example
The researcher delved into ancient manuscripts to find clues.
Le chercheur a approfondi les manuscrits anciens pour trouver des indices.
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 adjective /dɪˈbɪl.ɪ.teɪ.tɪŋ/

debilitating

affaiblissant
Meaning
Making someone or something weak and infirm.
Example
The disease had a debilitating effect on his health.
La maladie avait un effet affaiblissant sur sa santé.