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C2 verb /ˌsuːpərˈæd/

superadd

superajouter
Meaning
to add something to what has already been added
Example
The author chose to superadd a new chapter to the revised edition.
L'auteur a choisi de superajouter un nouveau chapitre à l'édition révisée.
C2 adjective /saɪˈdɪəriəl/

sidereal

sidéral
Meaning
Relating to the stars or constellations; measured relative to the stars.
Example
Astronomers use sidereal time to track the positions of stars.
Les astronomes utilisent le temps sidéral pour suivre les positions des étoiles.
C2 noun /ˌsɒ̃ˈfrwɑː/

sang-froid

sang-froid
Meaning
Composure or coolness, especially in difficult situations.
Example
The leader handled the crisis with remarkable sang-froid.
Le leader a géré la crise avec un sang-froid remarquable.
C2 noun /sælv/

salve

baume
Meaning
An ointment used to promote healing of the skin or as protection.
Example
She applied a salve to the burn on her hand.
Elle a appliqué un baume sur la brûlure de sa main.
C2 noun /sɒl/

sol

sol (cinquième note de l'échelle musicale)
Meaning
The fifth note of the sol-fa musical scale (do, re, mi, fa, sol, la, ti); also the Latin word for sun
Example
The choir practiced singing the note sol during rehearsal.
Le chœur a pratiqué en chantant la note sol pendant les répétitions.
C2 noun /ˈsɪbɪləns/

sibilance

son sifflant
Meaning
A hissing or hushing sound, especially in speech with 's' or 'sh'.
Example
The poet used sibilance to create a soft, hissing effect in the verse.
Le poète a utilisé la sibilance pour créer un effet doux et sifflant dans le vers.
C2 noun /ˈsætər/

satyr

bonheur
Meaning
a creature from Greek mythology depicted as a lustful being, often half-man and half-goat; by extension, a lecherous man
Example
In the museum mural, a satyr plays the panpipes while dancing in the woods.
Elle n'a pas pu cacher son bonheur lorsqu'elle a reçu le prix.
C2 verb /ˈsɛreɪt/

serrate

faire un bord dentelé
Meaning
To make a saw-toothed edge or notched margin.
Example
The craftsman serrated the knife blade for better cutting.
L'artisan a séré la lame du couteau pour une coupe meilleure.
C2 noun /ˈsuːpsɒ̃/

soupcon

une petite quantité
Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
Elle a ajouté juste une petite quantité d'épices au plat.
C2 verb /ˈstʌltɪfaɪ/

stultify

rendre quelqu'un ou quelque chose stupide ou nuire à l'efficacité et à l'enthousiasme
Meaning
to make someone or something appear foolish, or to hinder effectiveness and enthusiasm
Example
The repetitive tasks seemed to stultify the workers' creativity.
Les tâches répétitives semblaient rendre les travailleurs moins créatifs.
C2 noun /ˈskæb.ərd/

scabbard

fourreau
Meaning
A sheath for the blade of a sword or dagger, typically made of leather or metal.
Example
The knight drew his sword from the scabbard.
Le chevalier a sorti son épée du fourreau.
C2 noun /ˈsaɪnɪkjʊər/

sinecure

emploi facile
Meaning
a position requiring little or no work but giving financial benefit or status
Example
He was given a sinecure at the university as a reward for his loyalty.
Il a obtenu un emploi facile à l'université en récompense de sa loyauté.
C2 verb /ˈseɪʃiˌeɪt/

satiate

satisfaire
Meaning
To satisfy fully, especially with food or desire.
Example
The large meal satiated his hunger.
Le grand repas a satisfait sa faim.
C2 noun /sɪˈkwiːlə/

sequela

séquelle
Meaning
A condition that is the consequence of a previous disease or injury.
Example
Lung scarring can be a sequela of severe pneumonia.
Les cicatrices pulmonaires peuvent être une séquelle d'une pneumonie sévère.
C2 noun /ˈsɑːrdʒənt ət ɑːrmz/

sergeant-at-arms

sergent d'armes
Meaning
An officer responsible for maintaining order during meetings or legislative sessions.
Example
The sergeant-at-arms escorted the disruptive member out of the hall.
Le sergent d'armes a escorté le membre perturbateur hors de la salle.
C2 noun /səˈvɑːnt/

savant

bonheur
Meaning
a learned person, especially a distinguished scientist or scholar; sometimes used in the phrase ‘savant syndrome’ for someone with exceptional abilities alongside developmental differences
Example
The conference keynote was delivered by a linguistic savant who studies endangered languages.
Elle ne pouvait cacher sa bonheur lorsqu'elle a reçu le prix.
C2 adjective /sʌbˈdʒeɪsənt/

subjacent

sous-jacent
Meaning
lying immediately beneath; underlying
Example
The geological survey revealed subjacent layers of rock.
L'enquête géologique a révélé des couches sous-jacentes de roche.
C2 noun /ˈʃʊərəti/

surety

caution
Meaning
a person who takes responsibility for another's performance of an undertaking, such as appearing in court or paying a debt
Example
The landlord required a surety before renting the apartment.
Le propriétaire a exigé une caution avant de louer l'appartement.
C2 noun /ˈspɛndˌθrɪft/

spendthrift

dépensier
Meaning
A person who spends money extravagantly or wastefully.
Example
The young prince was known as a spendthrift, wasting his fortune on lavish parties.
Le jeune prince était connu comme un dépensier, gaspillant sa fortune dans des fêtes somptueuses.
C2 adjective /sɪˈbeɪʃəs/

sebaceous

relatif au sébum
Meaning
Relating to or secreting sebum, an oily substance from the skin.
Example
Acne is often caused by overactive sebaceous glands.
L'acné est souvent causée par des glandes sébacées hyperactives.
C2 adjective /ˈsfɪŋks laɪk/

sphinx-like

mystérieux
Meaning
Mysterious, enigmatic, or difficult to interpret
Example
Her sphinx-like smile made it hard to guess what she was thinking.
Son sourire sphinx-like rendait difficile de deviner ce qu'elle pensait.
C2 noun /ˈskʌl.i.ən/

scullion

valet de cuisine
Meaning
a servant assigned the most menial kitchen tasks
Example
In medieval times, a scullion was responsible for cleaning pots and pans.
Au Moyen Âge, un scullion était responsable du nettoyage des casseroles et des poêles.
C2 verb /ˈsɪn.tɪ.leɪt/

scintillate

scintiller
Meaning
to sparkle or shine brightly; to emit flashes of light
Example
The diamond ring scintillated under the bright lights.
La bague en diamant scintillait sous les lumières brillantes.
C2 adjective /svelt/

svelte

svelte
Meaning
Attractively thin, graceful, and elegant in appearance or movement.
Example
She looked svelte in the elegant black dress.
Elle avait l'air svelte dans la robe noire élégante.
C2 noun /skriːd/

screed

écrit long et ennuyeux
Meaning
a long, tedious piece of writing or speech; also a layer of material like cement spread on a surface
Example
He delivered a long screed against corruption.
Il a livré un long discours contre la corruption.
C2 adjective /səˈluːtəˌtɔri/

salutatory

discours de salutation
Meaning
Relating to or expressing a greeting or an address, especially at the beginning of a speech.
Example
She delivered a salutatory address at the graduation ceremony.
Elle a prononcé un discours de salutation lors de la cérémonie de remise des diplômes.
C2 noun /spliːn/

spleen

rate; colère
Meaning
an organ in the body that produces lymphocytes and filters blood; also refers to bad temper or spite
Example
He vented his spleen on his coworkers after the meeting.
Il a exprimé sa colère sur ses collègues après la réunion.
C2 noun /ˈsætræp/

satrap

satrape
Meaning
a governor of a province in ancient Persia; also used figuratively for a subordinate ruler
Example
The king appointed a satrap to oversee the distant province.
Le roi nomma un satrape pour superviser la province éloignée.
C2 noun /sɜːrˈsiːs/

surcease

cessation
Meaning
a temporary or final ending or stopping of something
Example
The noise finally came to a surcease after midnight.
Le bruit a finalement cessé après minuit.
C2 noun /ˈslʌɡərd/

sluggard

paresseux
Meaning
A lazy, sluggish person.
Example
The sluggard refused to get out of bed even at noon.
Le paresseux a refusé de sortir du lit même à midi.
C2 adjective /ˈʃɑːpwɔːrn/

shopworn

usé / vieilli
Meaning
worn or faded from being displayed in a shop; no longer fresh or original
Example
The shopworn shoes were sold at a discount.
Les chaussures shopworn ont été vendues à prix réduit.
C2 noun /sʌbˈɔːl.tən/

subaltern

une personne occupant une position subordonnée; dans l'armée, un officier subalterne
Meaning
A person holding a subordinate position; in the military, a junior officer.
Example
The subaltern was responsible for leading a small platoon of soldiers.
Le subalterne était responsable de la direction d'un petit peloton de soldats.
C2 noun /ˈstrætədʒəm/

stratagem

stratagème
Meaning
a plan or scheme designed to achieve a particular goal, often by trickery
Example
The general devised a clever stratagem to outwit the enemy.
Le général a conçu une stratagème astucieux pour tromper l'ennemi.
C2 noun /ˈsɛrəf/

seraph

séraphin
Meaning
An angelic being associated with light and purity, often depicted as a high-ranking angel in Christian theology.
Example
The stained-glass window depicted a seraph with outstretched wings.
Le vitrail représentait un séraphin avec des ailes déployées.
C2 noun /ˈsaɪz.mə.ɡræf/

seismograph

sismographe
Meaning
An instrument that measures and records details of earthquakes, such as force and duration.
Example
The seismograph detected a strong tremor in the area.
Le sismographe a détecté une forte secousse dans la région.
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

en secret
Meaning
secretly, in confidence, or in private
Example
The deal was made sub rosa to avoid public scrutiny.
L'accord a été fait sub rosa pour éviter le contrôle public.
C2 noun /ˈsʌplɪkənt/

supplicant

suppliant
Meaning
A person who humbly or earnestly asks for something, usually from a person of authority.
Example
The temple was filled with supplicants seeking blessings.
Le temple était rempli de suppliants cherchant des bénédictions.
C2 adjective /səˈlɪsɪtəs/

solicitous

solliciteux
Meaning
showing concern or care for someone's health, happiness, or comfort
Example
She was always solicitous about the well-being of her students.
Elle était toujours préoccupée par le bien-être de ses étudiants.
C2 noun /ˈskɔːrpiən fɪʃ/

Scorpion fish

poisson-scorpion
Meaning
a type of fish with venomous spines that belongs to the family Scorpaenidae
Example
The scorpion fish has dangerous spines that can inject venom.
Le poisson-scorpion a des épines dangereuses qui peuvent injecter du venin.
C2 noun /ˌsuːpərɪnˈtɛndəns/

superintendence

supervision
Meaning
the act of overseeing, supervising, or managing
Example
The superintendence of the school is the principal’s duty.
La supervision de l'école est le devoir du principal.
C2 adjective /ˈsloʊθfəl/

slothful

paresseux
Meaning
Lazy, idle, and unwilling to work.
Example
She was too slothful to get out of bed early.
Elle était trop paresseuse pour se lever tôt du lit.
C2 noun /sɛkˈstɛt/

sextet

sextuor
Meaning
a group of six people playing music or a piece written for six performers
Example
The jazz sextet filled the small club with a warm, layered sound.
Le sextuor de jazz a rempli le petit club avec un son chaud et superposé.
C2 noun /ˈsteɪtkraft/

statecraft

art de gouverner
Meaning
The art of governing and managing state affairs effectively.
Example
The leader was praised for his exceptional statecraft in handling international relations.
Le leader a été félicité pour son art de gouverner exceptionnel dans la gestion des relations internationales.
C2 adjective /ˈskʌr.ɪ.ləs/

scurrilous

calomnieux
Meaning
Using or expressed in coarse, abusive, or slanderous language.
Example
The politician faced criticism for his scurrilous remarks about his opponent.
Le politicien a fait face à des critiques pour ses remarques calomnieuses sur son adversaire.
C2 verb /seɪt/

sate

satisfaire
Meaning
To satisfy fully or to excess.
Example
The huge meal sated their hunger after the long journey.
Le gros repas a satisfait leur faim après le long voyage.
C2 adjective /ˈsmɑːrmi/

smarmy

flatteur / fausse politesse
Meaning
Excessively flattering or ingratiating, often insincerely.
Example
The salesman gave a smarmy pitch that felt fake.
Le vendeur a donné un discours flatteur qui semblait faux.
C2 noun /ˈsweɪʒən/

suasion

persuasion
Meaning
the act of persuading or influencing someone
Example
The leader used gentle suasion to win support for the plan.
Le leader a utilisé une suasion douce pour obtenir le soutien pour le plan.
C2 noun /ˌspoʊliˈeɪʃən/

spoliation

destruction
Meaning
The act of destroying or ruining something, often evidence or property.
Example
The court punished the company for the spoliation of evidence.
Le tribunal a puni l'entreprise pour la spoliation des preuves.
C2 adjective səˈluː.bri.əs

salubrious

salubre
Meaning
Health-giving; healthy; promoting health and well-being.
Example
The mountain air is salubrious and refreshing.
L'air de la montagne est salubre et rafraîchissant.
C2 noun /sneɪk ɡɔːrd/

Snake gourd

courge serpent
Meaning
a long, curved vegetable that resembles a snake, commonly used in South Asian cuisine
Example
The snake gourd grows in a twisted, serpentine shape in the garden.
La courge serpent pousse dans une forme tordue et serpentine dans le jardin.
C2 adjective /ˌsuːprəˈmʌndeɪn/

supramundane

supramondain
Meaning
beyond the physical or ordinary world; transcendent
Example
The monk spoke of supramundane peace beyond material life.
Le moine a parlé de la paix supramondaine au-delà de la vie matérielle.
C2 adjective /ˌsuːdəˈrɪfɪk/

sudorific

sudorifique
Meaning
causing or increasing sweating
Example
The doctor prescribed a sudorific drug to help reduce the fever.
Le médecin a prescrit un médicament sudorifique pour réduire la fièvre.
C2 noun /stɒˈkeɪd/

stockade

clôture en bois
Meaning
a defensive barrier made of strong posts or timbers, often around a fort or prison
Example
The prisoners were kept inside the wooden stockade.
Les prisonniers ont été gardés à l'intérieur de la clôture en bois.
C2 noun /ˈsɒfɪst/

sophist

sophiste
Meaning
a person who uses clever but misleading arguments
Example
He was dismissed as a sophist who twisted facts to win debates.
Il a été rejeté comme un sophiste qui déformait les faits pour gagner des débats.
C2 adjective, noun /səbˈmɜːrsəbl/

submersible

submersible
Meaning
capable of being submerged; a small underwater craft
Example
The scientists explored the deep ocean using a submersible.
Les scientifiques ont exploré l'océan profond à l'aide d'un submersible.
C2 noun /staɪn/

stein

mug à bière
Meaning
A large beer mug, typically made of glass or stoneware.
Example
He raised his stein to toast his friends.
Il a levé son stein pour porter un toast à ses amis.
C2 noun /ˌsæv.wɑːr ˈfeər/

savoir-faire

habileté sociale
Meaning
The ability to act or speak appropriately in social situations; polished social skills.
Example
She handled the delicate situation with remarkable savoir-faire.
Elle a géré la situation délicate avec un remarquable savoir-faire.
C2 noun /ˈsækrɪsti/

sacristy

sacristie
Meaning
a room in a church where sacred vessels and vestments are kept
Example
The priest entered the sacristy before the mass began.
Le prêtre est entré dans la sacristie avant que la messe ne commence.
C2 adjective /spæzˈmɒdɪk/

spasmodic

spasmodique
Meaning
occurring irregularly or in sudden bursts
Example
The patient experienced spasmodic coughing during the night.
Le patient a eu des toux spasmodiques pendant la nuit.
C2 noun /ˈstrɪk.tʃər/

stricture

restriction, critique
Meaning
a restriction or limitation; a critical remark
Example
The new law placed a severe stricture on free speech.
La nouvelle loi a imposé une restriction sévère à la liberté d'expression.
C2 noun /səbˈsɜːviəns/

subservience

servilité
Meaning
the condition of being too willing to obey or serve others
Example
His subservience to authority annoyed his colleagues.
Sa servilité envers l'autorité agaçait ses collègues.
C2 noun /sfɛˈrɪsɪti/

sphericity

sphéricité
Meaning
The quality or state of being spherical; roundness.
Example
The sphericity of the ball made it roll smoothly on the ground.
La sphéricité de la balle lui a permis de rouler doucement sur le sol.
C2 adjective /ˈsɒmnələnt/

somnolent

somnolent
Meaning
Sleepy or drowsy; causing a desire to sleep.
Example
The somnolent lecture made half the class fall asleep.
Le cours somnolent a fait dormir la moitié de la classe.
C2 adjective /ˌsʌpəzɪˈtɪʃəs/

supposititious

supposé
Meaning
Based on assumption rather than fact; not genuine or authentic.
Example
The story turned out to be supposititious, with no evidence to support it.
L'histoire s'est avérée être supposée, sans aucune preuve pour la soutenir.
C2 verb /ʃʌk/

shuck

éplucher
Meaning
To remove the outer covering, such as the husk of corn or shell of shellfish.
Example
She learned how to shuck oysters quickly.
Elle a appris à ouvrir les huîtres rapidement.
C2 noun /ˈsɛm.ɪ.nɛr.i/

seminary

séminaire
Meaning
A school or college for training priests, ministers, or rabbis.
Example
He decided to enroll in a seminary to study theology.
Il a décidé de s'inscrire dans un séminaire pour étudier la théologie.
C2 adjective /səˈɡeɪ.ʃəs/

sagacious

sage
Meaning
Having or showing keen mental discernment and good judgment; wise.
Example
His sagacious leadership saved the company from failure.
Sa direction sage a sauvé l'entreprise de l'échec.
C2 verb /ˈsɪbəleɪt/

sibilate

prononcer avec un sifflement
Meaning
To pronounce with a hissing sound.
Example
The actor sibilated his lines for dramatic effect.
L'acteur a prononcé ses répliques avec un sifflement pour un effet dramatique.
C2 noun ˈsaɪəns ˈdezət

science-desert

désert scientifique
Meaning
A region or area lacking in scientific development, research facilities, or educational institutions.
Example
J.C. Bose thrived in a science-desert.
J.C. Bose a prospéré dans un désert scientifique.
C2 noun /spʌndʒ ɡɔːrd/

Sponse gourd

courge éponge
Meaning
a fibrous gourd that becomes sponge-like when dried, used for cleaning and in cooking when young
Example
The sponge gourd can be eaten when young or dried to make natural scrubbers.
La courge éponge peut être mangée lorsqu'elle est jeune ou séchée pour fabriquer des éponges naturelles.
C2 noun /ˈsɛpəlkər/

sepulcher

tombeau
Meaning
A small room or monument, cut in rock or built of stone, in which a dead person is buried.
Example
The ancient king was laid to rest in a grand sepulcher.
Le roi ancien a été enterré dans un grand tombeau.
C2 verb /ˈskærɪfaɪ/

scarify

scarifier
Meaning
to make shallow cuts or scratches; to loosen the surface of soil
Example
The farmer scarified the soil before planting seeds.
L'agriculteur a scarifié le sol avant de planter les graines.
C2 adjective /ˈstɒlɪd/

stolid

impassible, stoïque
Meaning
Calm, dependable, and showing little emotion or animation.
Example
Despite the chaos around him, he remained stolid and composed.
Malgré le chaos autour de lui, il resta calme et posé.
C2 noun /ˈsɒfɪstri/

sophistry

sophistique
Meaning
the use of clever but false arguments, often to deceive
Example
The politician's speech was full of sophistry.
Le discours du politicien était plein de sophistique.
C2 noun /sɒmˈnæmbjʊlɪst/

somnambulist

somnambule
Meaning
A person who sleepwalks.
Example
The somnambulist wandered out of the house at night.
Le somnambule est sorti de la maison la nuit.
C2 adjective /ˌstætʃuˈɛsk/

statuesque

statuesque
Meaning
Having the grace, beauty, or dignity of a statue; tall and attractively proportioned.
Example
She had a statuesque figure that turned heads wherever she went.
Elle avait une silhouette statuaire qui attirait les regards partout où elle allait.
C2 noun /sɪˈdɪʃ.ən/

Sedition

sédition
Meaning
conduct or speech inciting people to rebel against authority; treason
Example
The activist was charged with sedition for his inflammatory speeches.
L'activiste a été accusé de sédition pour ses discours incendiaires.
C2 verb /skwɛltʃ/

squelch

faire un bruit mou, comme marcher dans la boue; réprimer ou faire taire
Meaning
to make a soft sucking sound, such as when walking on mud; to suppress or silence
Example
His boots squelched in the wet ground.
Ses bottes faisaient un bruit de squelch sur le sol mouillé.
C2 verb /stɑːntʃ/

stanch

arrêter le flux de sang
Meaning
to stop the flow of blood or liquid from a wound or source
Example
The nurse quickly stanched the bleeding from the cut.
l'infirmière a rapidement arrêté le saignement de la coupure.
C2 noun ˌsʌb.dʒʊˈɡeɪ.ʃən

subjugation

soumission ou domination
Meaning
The action of bringing someone or something under domination or control, especially by force.
Example
The subjugation of weaker nations by colonial powers shaped history.
La soumission des nations plus faibles par les puissances coloniales a façonné l'histoire.
C2 noun /ˌsɪmjʊˈleɪkrəm/

simulacrum

simulacre
Meaning
an image or representation of someone or something; a superficial likeness
Example
The statue was only a simulacrum of the ancient god.
La statue n'était qu'un simulacre de l'ancien dieu.
C2 noun /ˈʃɑːdənfrɔɪdə/

schadenfreude

plaisir dérivé du malheur d'autrui
Meaning
pleasure derived from another person's misfortune
Example
He felt a sense of schadenfreude when his rival failed.
Il a ressenti un sentiment de schadenfreude lorsque son rival a échoué.
C2 verb /səbˈsjuːm/

subsume

inclure
Meaning
To include or absorb something into a larger group or category.
Example
Minor details were subsumed under the main topic.
Les détails mineurs ont été subsumés sous le sujet principal.
C2 noun /sɒp/

sop

compromis
Meaning
a concession or appeasement to pacify someone; also a piece of bread dipped in liquid
Example
The manager offered a bonus as a sop to the unhappy employees.
Le directeur a offert une prime comme une concession aux employés mécontents.
C2 adjective /stəˈkɑː.təʊ/

staccato

détaché
Meaning
short and detached in sound or style, often used in music
Example
The pianist played the notes in a staccato rhythm.
Le pianiste a joué les notes dans un rythme détaché.
C2 noun /skʌlˈdʌɡəri/

skulduggery

fraude
Meaning
underhanded or dishonest behavior
Example
The politician was accused of financial skulduggery.
Le politicien a été accusé de fraude financière.
C2 verb /ˈsʌbdʒʊˌɡeɪt/

subjugate

soumettre
Meaning
To bring under domination or control, especially by conquest.
Example
The empire sought to subjugate the neighboring kingdoms.
L'empire a cherché à soumettre les royaumes voisins.
C2 noun /strəˈmoʊ.ni.əm ˌflaʊ.ər/

Stramonium flower

fleur de stramoine
Meaning
A trumpet-shaped white or purple flower from the jimsonweed plant, known for its toxic properties
Example
The stramonium flower blooms at night with a sweet fragrance.
La fleur de stramoine fleurit la nuit avec un parfum doux.
C2 noun /ˈsiːkənt/

secant

sécante
Meaning
A straight line that intersects a curve at two or more points.
Example
In geometry, a secant cuts the circle at two distinct points.
En géométrie, une sécante coupe le cercle en deux points distincts.
C2 adjective /ˌsuː.pɚˈsɪl.i.əs/

supercilious

arrogant
Meaning
Behaving or looking as though one thinks one is superior to others; arrogant and disdainful.
Example
She gave him a supercilious smile as if he was beneath her.
Elle lui a fait un sourire arrogant comme s'il était en dessous d'elle.
C2 adjective /ˈsiːmli/

seemly

approprié
Meaning
proper or appropriate in behavior or appearance
Example
It was not seemly to argue loudly during the ceremony.
Il n'était pas approprié de discuter bruyamment pendant la cérémonie.
C2 adjective /ˈsed.j ə.l ə s/

Sedulous

assidu; diligent;
Meaning
showing dedication and diligence; persistent and careful in work
Example
She was sedulous in her research, spending hours in the library every day.
Elle était assidue dans ses recherches, passant des heures à la bibliothèque chaque jour.
C2 adjective /stɛnˈtɔːriən/

stentorian

tonitruant
Meaning
Extremely loud and powerful in sound.
Example
The teacher’s stentorian voice quieted the noisy classroom.
La voix tonitruante du professeur a calmé la classe bruyante.
C2 adjective /sɪˈlæbɪk/

syllabic

syllabique
Meaning
Relating to or based on syllables.
Example
The teacher explained the syllabic structure of the word.
Le professeur a expliqué la structure syllabique du mot.
C2 noun /ˈsɛpəlˌtʃər/

Sepulture

tombeau; sépulture;
Meaning
the act of burying a dead body; burial; a grave or tomb
Example
The ancient king's sepulture was discovered by archaeologists.
Le sépulcre du roi ancien a été découvert par les archéologues.
C2 noun /səbˈdʌk.ʃən/

subduction

Le mouvement latéral et vers le bas d'une couche de la croûte terrestre dans le manteau sous une autre plaque.
Meaning
The lateral and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Example
The Pacific Ring of Fire is an area of intense subduction.
La ceinture de feu du Pacifique est une zone de subduction intense.
C2 noun /ˈswɑːvɪti/

suavity

douceur et charme
Meaning
smoothness and charm in manner
Example
His suavity made him popular in social gatherings.
Sa douceur et son charme le rendaient populaire dans les rassemblements sociaux.
C2 adjective /ˈslæp.dæʃ/

slapdash

fait à la va-vite
Meaning
done too quickly and carelessly; hasty and careless
Example
The report was written in a slapdash manner, full of errors.
Le rapport a été rédigé à la va-vite, plein d'erreurs.
C2 adjective /ˌsuːpərˈæn.ju.eɪ.tɪd/

superannuated

obsolète
Meaning
old and no longer useful or valid; retired due to age
Example
The factory was filled with superannuated machines that slowed production.
L'usine était remplie de machines obsolètes qui ralentissaient la production.
C2 adjective /sɪˈnɒptɪk/

synoptic

synoptique
Meaning
giving a general overview or summary; presenting a broad view
Example
The report offers a synoptic view of climate trends over the past century.
Le rapport offre une vue synoptique des tendances climatiques du siècle dernier.
C2 noun /skæd/

scad

scad poisson
Meaning
A type of fish of the jack family; also informally means a large number or quantity.
Example
The fisherman caught a scad in the net.
Le pêcheur a attrapé un scad dans le filet.
C2 noun /ˈstætɪks/

statics

statique
Meaning
The branch of mechanics dealing with bodies at rest and forces in equilibrium.
Example
She is studying statics as part of her engineering course.
Elle étudie la statique dans le cadre de son cours d'ingénierie.
C2 adjective /ˈspɔːrtɪv/

sportive

sportif
Meaning
Playful, lively, or full of fun.
Example
The children were in a sportive mood during the picnic.
Les enfants étaient d'humeur sportive pendant le pique-nique.
C2 adjective /ˌseɪpiˈɛnʃəl/

sapiential

relatif à la sagesse
Meaning
Relating to wisdom or knowledge, often in a religious or philosophical sense.
Example
The monk shared sapiential teachings with his students.
Le moine a partagé des enseignements relatifs à la sagesse avec ses étudiants.
C2 adjective /ˈsiːmi/

seamy

dégradé, sordide
Meaning
Morally degraded, unpleasant, or sordid.
Example
The novel reveals the seamy side of city life.
Le roman révèle le côté sordide de la vie en ville.
C2 noun /sɪnˈtɪl.ə/

scintilla

petite étincelle
Meaning
A tiny trace or spark of a specified quality or feeling.
Example
There wasn’t a scintilla of doubt in her mind.
Il n'y avait pas une étincelle de doute dans son esprit.
C2 adjective /ˈsɛpərəbəl/

separable

séparable
Meaning
Capable of being separated or divided.
Example
The two issues are separable and should be discussed independently.
Les deux problèmes sont séparables et doivent être discutés indépendamment.
C2 noun /sɪlf/

sylph

sylphide
Meaning
A mythical spirit of the air; also refers to a slender, graceful woman.
Example
She moved across the stage like a sylph, light and graceful.
Elle se déplaçait sur la scène comme une sylphide, légère et gracieuse.
C2 adjective, adverb /ˈsaɪdlɔːŋ/

sidelong

regard oblique
Meaning
Directed to the side; indirect, furtive, or not straightforward.
Example
She gave him a sidelong glance across the room.
Elle lui lança un regard oblique à travers la pièce.
C2 noun /ˈsɪnjuː/

sinew

tendon
Meaning
A tendon; figuratively, the source of strength, power, or resilience.
Example
The sinews in his arms stood out as he lifted the heavy box.
Les tendons dans ses bras ressortaient lorsqu'il souleva la boîte lourde.
C2 noun /spɪˈlʌŋkər/

spelunker

spéléologue
Meaning
A person who explores caves as a hobby.
Example
The spelunker carried ropes and lights into the dark cave.
Le spéléologue a emporté des cordes et des lumières dans la grotte sombre.
C2 adjective /ˌsɒpəˈrɪfɪk/

soporific

bonheur
Meaning
tending to induce drowsiness or sleep; causing sleepiness
Example
The professor's lecture was so soporific that half the class fell asleep.
Elle ne pouvait pas cacher son bonheur lorsqu'elle a reçu le prix.
C2 noun /slaɪt/

sleight

habileté
Meaning
Skill or dexterity, especially in performing tricks.
Example
The magician amazed the crowd with his sleight of hand.
Le magicien a étonné la foule avec son habileté des mains.
C2 verb /ʃiːð/

sheathe

remettre dans le fourreau
Meaning
to put a sword or knife back into its cover
Example
He quickly sheathed his sword after the duel.
Il remit rapidement son épée dans son fourreau après le duel.
C2 noun /ˈsɪŋkrəˌnɪzəm/

synchronism

synchronisme
Meaning
The simultaneous occurrence of events or actions.
Example
The synchronism of the dancers' movements amazed the audience.
Le synchronisme des mouvements des danseurs a émerveillé le public.
C2 verb /ˈstjuːpɪˌfaɪ/

stupefy

stupéfier
Meaning
to make someone unable to think clearly, usually because of surprise or shock
Example
The magician's tricks stupefied the audience.
Les tours du magicien ont stupéfié le public.
C2 adjective /ˈswɔːrði/

swarthy

bronzé
Meaning
Having a dark complexion or skin tone.
Example
The sailor had a swarthy face from years under the sun.
Le marin avait le visage bronzé après des années sous le soleil.
C2 verb /ˈsʌk.əl/

suckle

allaiter
Meaning
to feed a baby or young animal with milk from the breast or udder
Example
The mother cat suckled her kittens in the basket.
La mère chat a allaité ses chatons dans le panier.
C2 adjective /sɪˈdɪʃəs/

seditious

séditieux
Meaning
Encouraging rebellion against authority.
Example
The activist spread seditious pamphlets among the crowd.
L'activiste a distribué des tracts séditieux parmi la foule.
C2 adjective /ˈsʌpliənt/

suppliant

suppliant
Meaning
Humbly or earnestly asking for something, especially from a person in authority.
Example
The suppliant man begged for mercy at the king's feet.
L'homme suppliant a supplié pour miséricorde aux pieds du roi.
C2 verb /sɛkˈstuːpəl/

sextuple

sextupler
Meaning
to make or become six times as great or as many
Example
Within two quarters, the campaign sextupled their daily sign-ups.
En deux trimestres, la campagne a sextuplé leurs inscriptions quotidiennes.