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C1 adjective /dɪˈsɜːrnəbl/

discernible

discernable
Meaning
able to be seen, recognized, or understood
Example
There was a discernible change in his behavior.
Il y a eu un changement discernable dans son comportement.
C1 verb /dɪˈdjuːs/

deduce

déduire
Meaning
to reach a conclusion by reasoning or inference
Example
From the evidence, the detective deduced that the suspect was lying.
À partir des preuves, le détective a déduit que le suspect mentait.
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 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 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 adjective /dɪˈfaɪənt/

Defiant

défiant; rebelle
Meaning
boldly resistant or challenging; disobedient
Example
The defiant student refused to follow the rules.
L'étudiant défiant a refusé de suivre les règles.
C1 noun /ˌdɪp.ləˈmæt.ɪk ˈmaɪl.stəʊn/

diplomatic milestone

jalon diplomatique
Meaning
A significant achievement or important event in diplomatic relations.
Example
Hosting the summit was a diplomatic milestone.
L'organisation du sommet était un jalon diplomatique.
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 /dɪˈpɔːrt/

deport

déporter
Meaning
To expel a foreigner from a country, usually for legal or political reasons.
Example
The government decided to deport the illegal immigrants.
Le gouvernement a décidé de déporter les immigrés illégaux.
C1 noun /ˌdiːˈmer.ɪt/

Demerit

fauté; inconvénient; marque pour une faute ou une infraction
Meaning
a fault or disadvantage; a mark given for a fault or offense
Example
The student received a demerit for arriving late to class repeatedly.
L'étudiant a reçu un démérite pour être arrivé en retard en classe à plusieurs reprises.
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 verb /dɪsˈlɒdʒ/

dislodge

déloger
Meaning
To remove or force out from a position, especially one that is fixed or hard to move.
Example
The troops dislodged the enemy from the hill.
Les troupes ont délogé l'ennemi de la colline.
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 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 verb /dəˈmɛstɪkeɪt/

domesticate

domestiquer
Meaning
to tame an animal for use by humans; to adapt something for domestic use
Example
Humans domesticated dogs thousands of years ago.
Les humains ont domestiqué les chiens il y a des milliers d'années.
C1 adjective /dɪˈraɪsɪv/

derisive

méprisant
Meaning
Expressing contempt or ridicule.
Example
She gave a derisive laugh at his attempt to sing.
Elle a donné un rire méprisant face à sa tentative de chanter.
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 adjective /dɪˈvaʊt/

devout

dévoué
Meaning
Deeply religious or sincere.
Example
He is a devout believer who prays every day.
Il est un croyant dévoué qui prie chaque jour.
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 /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 /dɪsˈrɛpjətəbl̩/

disreputable

discrédité
Meaning
having a bad reputation; not considered respectable or trustworthy
Example
The journalist avoided staying in the disreputable part of town.
Le journaliste a évité de séjourner dans le quartier discrédité de la ville.
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 /ˈdrʌdʒəri/

drudgery

travail pénible et monotone
Meaning
Hard, menial, or dull work.
Example
She wanted to escape the drudgery of her daily routine.
Elle voulait échapper à la routine monotone de sa journée.
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 adjective /dɪˈbeɪst/

debased

dégradé
Meaning
having lost quality, value, or moral character
Example
The debased currency lost the trust of the people.
La monnaie dégradée a perdu la confiance des gens.
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 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 noun /dɪˈfen.dənt/

Defendant

défendeur
Meaning
an individual, company, or institution sued or accused in a court of law
Example
The defendant pleaded not guilty to all charges brought against him.
Le défendeur a plaidé non coupable de toutes les accusations portées contre lui.
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 adjective /dɪˈskrɪmɪˌneɪtɪŋ/

discriminating

discriminant
Meaning
Having refined taste or good judgment; able to recognize subtle differences.
Example
She is known for her discriminating taste in art.
Elle est connue pour son goût discriminant en art.
C1 noun dɛkˈstɛr.ɪ.ti

dexterity

dextérité
Meaning
Skill in performing tasks, especially with the hands; mental skill or adroitness.
Example
His dexterity in playing the piano amazed the audience.
Sa dextérité à jouer du piano a étonné le public.
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 /dɪsˈtrʌst/

distrust

se méfier
Meaning
to have no confidence or trust in someone or something
Example
Many people distrust politicians.
Beaucoup de gens se méfient des politiciens.
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 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 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 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 /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 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 noun /ˈdaɪəˌlɛkt/

dialect

dialecte
Meaning
A particular form of a language spoken in a specific region or by a specific group.
Example
He speaks a dialect of Bengali that is common in rural areas.
Il parle un dialecte du bengali qui est courant dans les zones rurales.
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 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 /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 /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 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 /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 /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 noun /dɪn/

din

bruit
Meaning
a loud, unpleasant, and prolonged noise
Example
The din of traffic outside made it hard to concentrate.
Le bruit de la circulation dehors rendait la concentration difficile.
C1 adjective dɒɡˈmæt.ɪk

dogmatic

dogmatique
Meaning
Being inclined to lay down principles as incontrovertibly true; characterized by arrogant assertion of unproven principles.
Example
His dogmatic approach to politics made discussions difficult.
Son approche dogmatique de la politique a rendu les discussions difficiles.
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 verb /dɪˈstɪl/

distill

distiller
Meaning
To purify a liquid by heating and cooling; to extract the essential meaning or most important aspects.
Example
The factory distills water to make it safe for drinking.
L'usine distille de l'eau pour la rendre sûre à boire.
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 adjective /dræb/

drab

terne
Meaning
Dull, lacking brightness or interest; monotonous.
Example
The room looked drab with its gray walls and dim lighting.
La pièce semblait terne avec ses murs gris et son éclairage faible.
C1 noun dɪˌtɪə.ri.əˈreɪ.ʃən

deterioration

détérioration
Meaning
The process of becoming progressively worse; decline in quality, condition, or strength.
Example
Poor maintenance leads to material deterioration.
Un mauvais entretien conduit à la détérioration du matériel.
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 noun dɪˈtɜː.mɪ.nənt

determinant

facteur déterminant
Meaning
A factor that decisively affects the nature or outcome of something.
Example
Education is a key determinant of success.
L'éducation est un facteur déterminant du succès.
C1 adjective /dɪˈspɜːrst/

dispersed

dispersé
Meaning
Scattered or spread across a wide area.
Example
The dispersed population made it difficult to provide public services.
La population dispersée a rendu difficile la fourniture de services publics.
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 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 noun /ˌdɪstɪˈleɪʃən/

distillation

distillation
Meaning
The process of purifying a liquid by heating and cooling; the extraction of the essential meaning.
Example
Distillation is commonly used to produce alcoholic beverages.
La distillation est couramment utilisée pour produire des boissons alcoolisées.
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 /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/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 adjective /ˈdɛkədənt/

decadent

décadent, luxueux
Meaning
Characterized by or reflecting a state of moral or cultural decline; excessively self-indulgent.
Example
The party was filled with decadent luxury and excess.
La fête était remplie de luxe décadent et d'excès.
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 /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 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 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 /ˌdaɪəˈbɒlɪkəl/

diabolical

diabolique
Meaning
Wicked, cruel, or outrageously bad; resembling the devil.
Example
The dictator’s diabolical rule brought misery to the nation.
Le régime diabolique du dictateur a apporté la misère à la nation.
C1 adjective /dɪsˈpæʃənət/

dispassionate

impartial
Meaning
not influenced by strong emotion; impartial
Example
The judge remained dispassionate throughout the trial.
Le juge est resté impartial pendant tout le procès.
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 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 noun /ˌdɪsəˈbiːdiəns/

disobedience

désobéissance
Meaning
failure or refusal to obey rules, laws, or authority
Example
The child's disobedience worried his parents.
La désobéissance de l'enfant inquiéta ses parents.
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 noun /dɪˈsaɪ.pəl/

Disciple

disciple; partisan
Meaning
a follower and student of a teacher, leader, or philosopher; devoted follower
Example
The famous philosopher had many disciples who spread his teachings worldwide.
Le célèbre philosophe avait de nombreux disciples qui ont répandu ses enseignements dans le monde entier.
C1 noun /ˈdɛdlɒk/

deadlock

impasse
Meaning
a situation in which progress is impossible because of disagreement
Example
Negotiations reached a deadlock after neither side agreed to compromise.
Les négociations ont atteint un impasse après que les deux parties aient refusé de faire des compromis.
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 verb /dɪˈplɔːr/

deplore

déplorer
Meaning
to feel or express strong disapproval of something; to regret deeply
Example
Many people deplore the violence shown on television.
Beaucoup de gens déplorent la violence montrée à la télévision.
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 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 /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 /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 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 /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 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 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 /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 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 verb /daɪˈvʌldʒ/

divulge

divulguer
Meaning
to make known something private, secret, or previously unknown
Example
She refused to divulge the source of her information.
Elle a refusé de divulguer la source de ses informations.
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 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 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 verb /drɛntʃ/

drench

tremper
Meaning
to make someone or something completely wet
Example
The sudden rain drenched the players on the field.
La pluie soudaine a trempé les joueurs sur le terrain.
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 /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 /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 verb /ˌdɪskənˈsɜːrt/

disconcert

déconcerter
Meaning
To unsettle, confuse, or disturb the composure of someone.
Example
The sudden change of plans disconcerted the team.
Le changement soudain de plans a déconcerté l'équipe.
C1 noun /ˈdæn.drʌf/

Dandruff

pellicules
Meaning
small white or grey flakes of dead skin that form on the scalp and fall from the hair
Example
He used a special shampoo to treat his persistent dandruff problem.
Il a utilisé un shampooing spécial pour traiter son problème persistant de pellicules.
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 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 adjective /ˈdɪn.dʒi/

Dingy

sale et sombre; de couleur terne
Meaning
dark and dirty; gloomy; dull in color
Example
The old building had dingy walls that needed painting.
Le vieux bâtiment avait des murs sales qui avaient besoin d'être peints.
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 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 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 /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 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 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 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 noun /dɪsˈsɜːrvɪs/

disservice

dommage
Meaning
A harmful action; something that does damage rather than help.
Example
Spreading false information is a disservice to the community.
Diffuser de fausses informations est un dommage pour la communauté.
C1 adjective /dɪsˈɪntrəstɪd/

disinterested

désintéressé
Meaning
not influenced by personal interest; impartial or neutral
Example
The judge remained disinterested in the case.
Le juge est resté désintéressé dans l'affaire.
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 /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 /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 noun/verb /dɛnt/

dent

bosse
Meaning
a small hollow mark on the surface of something; to make a small hollow mark
Example
The accident left a dent in the car door.
L'accident a laissé une bosse dans la porte de la voiture.
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 adjective dɪsˈfʌŋkʃənl

dysfunctional

dysfonctionnel
Meaning
Not operating normally or properly.
Example
The dysfunctional system led to numerous delays and errors.
Le système dysfonctionnel a provoqué de nombreux retards et erreurs.
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, 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 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 verb /dɪˈtrækt/

detract

diminuer
Meaning
To reduce or take away the worth or value of something.
Example
His rude behavior will detract from his good reputation.
Son comportement impoli diminuera la valeur de sa bonne réputation.