slough
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C2 verb /slʌf/ or /sluː/

slough

Meaning
To shed or cast off (like dead skin); also a swampy or muddy area.
Example
The snake sloughed off its old skin.
C2 noun /ˈsʌfrədʒɪst/

suffragist

Meaning
a person advocating the extension of suffrage, especially to women
Example
The suffragists organized rallies to demand voting rights for women.
C2 adjective /ˈsteɪ.dʒi/

stagy

Meaning
Overly theatrical, artificial, or exaggerated in manner or style.
Example
Her performance felt stagy and unnatural.
C2 adjective /ˈstɒlɪd/

stolid

Meaning
Calm, dependable, and showing little emotion or animation.
Example
Despite the chaos around him, he remained stolid and composed.
C2 noun /ˈswɑːvɪti/

suavity

Meaning
smoothness and charm in manner
Example
His suavity made him popular in social gatherings.
C2 noun /ˈsækrɪsti/

sacristy

Meaning
a room in a church where sacred vessels and vestments are kept
Example
The priest entered the sacristy before the mass began.
C2 noun /ˈsɛkstənt/

sextant

Meaning
a navigational instrument with a graduated arc of 60°, used to measure the angle between a celestial object and the horizon
Example
Using a sextant, the navigator fixed the ship’s position at noon.
C2 noun /ˈsiːkənt/

secant

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.
C2 adjective /ˌsɛm.iˈsɪv.ə.laɪzd/

semicivilized

Meaning
Partially civilized; having some aspects of civilization but not fully developed.
Example
The tribe was described as semicivilized by early explorers.
C2 noun /ˌsɒ̃ˈfrwɑː/

sangfroid

Meaning
Composure or coolness under pressure.
Example
She impressed everyone with her sangfroid during the interview.
C2 adjective /ˈsɪbɪlənt/

sibilant

Meaning
Making or characterized by a hissing sound.
Example
The word 'snake' starts with a sibilant sound.
C2 adjective /ˈsɪŋkəˌpeɪtɪd/

syncopated

Meaning
Characterized by displaced beats or rhythms, especially in music.
Example
The jazz piece had a syncopated rhythm that energized the crowd.
C2 noun /ˈstætɪks/

statics

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.
C2 adjective /ˈstraɪ.eɪ.tɪd/

striated

Meaning
marked with thin lines, grooves, or stripes
Example
The muscle fibers appeared striated under the microscope.
C2 noun /sɒp/

sop

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.
C2 verb /ˈsnɪvəl/

snivel

Meaning
to cry or complain in a weak or annoying way
Example
He began to snivel when he didn’t get his way.
C2 noun /səˈvɑːnt/

savant

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.
C2 adjective /ˈsiːkwənt/

sequent

Meaning
Following in order or as a result.
Example
The sequent events changed the course of history.
C2 verb /sɛkˈstuːpəl/

sextuple

Meaning
to make or become six times as great or as many
Example
Within two quarters, the campaign sextupled their daily sign-ups.
C2 adjective /ˈsɪnjuːi/

sinewy

Meaning
Lean and muscular; strong and tough.
Example
The athlete had a sinewy build that showed his strength.
C2 noun /ˈskʌl.i.ən/

scullion

Meaning
a servant assigned the most menial kitchen tasks
Example
In medieval times, a scullion was responsible for cleaning pots and pans.
C2 noun /ˈsɪbɪləns/

sibilance

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.
C2 adjective /ˌstaʊtˈhɑːrtɪd/

stouthearted

Meaning
Brave, determined, and courageous
Example
The stouthearted soldier never gave up.
C2 noun /ˈsɒfɪst/

sophist

Meaning
a person who uses clever but misleading arguments
Example
He was dismissed as a sophist who twisted facts to win debates.
C2 adjective /ˈsɑːdn/

sodden

Meaning
thoroughly soaked or saturated with liquid
Example
His clothes were sodden after the heavy rain.
C2 adjective /ˈspaɪnəs/

spinous

Meaning
Having spines or thorn-like projections
Example
The spinous cactus was difficult to handle without gloves.
C2 noun /səˈlɪsɪˌtuːd/

solicitude

Meaning
Care or concern for someone or something.
Example
His mother showed great solicitude for his safety.
C2 verb /ˈsʌblɪmeɪt/

sublimate

Meaning
to redirect strong emotions or desires into socially acceptable activities or channels
Example
She sublimated her anger into painting beautiful landscapes.
C2 adjective /spæzˈmɒdɪk/

spasmodic

Meaning
occurring irregularly or in sudden bursts
Example
The patient experienced spasmodic coughing during the night.
C2 noun /ˈʃaɪstər/

shyster

Meaning
a person, especially a lawyer, who uses unscrupulous or dishonest methods
Example
The businessman was exposed as a shyster who cheated clients.
C2 adjective /ˈsækərɪn/

saccharine

Meaning
Excessively sweet or sentimental.
Example
His saccharine smile seemed insincere.
C2 noun /spʌndʒ ɡɔːrd/

Sponse gourd

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.
C2 adjective sɑːˈtɔːrɪəl

sartorial

Meaning
Of or relating to clothing or style or manner of dress.
Example
His sartorial choices were always on trend and admired.
C2 noun /ˈsteɪsɪs/ or /ˈstæsɪs/

stasis

Meaning
A state of inactivity or equilibrium; a situation where nothing changes.
Example
The negotiations reached a state of stasis with no progress made.
C2 noun /ˌsɪŋ.krəˈnɪs.ɪ.ti/

synchronicity

Meaning
The meaningful coincidence of two or more events that are not planned.
Example
The synchronicity of their thoughts amazed everyone.
C2 adjective /sʌbˈlɪŋɡwəl/

sublingual

Meaning
situated or applied under the tongue
Example
The doctor prescribed a sublingual tablet for faster absorption.
C2 noun (plural, informal) /skædz/

scads

Meaning
A large number or quantity of something (informal).
Example
She has scads of friends in the city.
C2 adjective /ˈsuːpaɪn/

supine

Meaning
Lying on the back, face upward; failing to act due to laziness or weakness.
Example
He lay supine on the grass, staring at the stars.
C2 adjective /ˌstætʃuˈɛsk/

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.
C2 verb /ˈskærɪfaɪ/

scarify

Meaning
to make shallow cuts or scratches; to loosen the surface of soil
Example
The farmer scarified the soil before planting seeds.
C2 noun /sɛnˈsɔːrɪəm/

sensorium

Meaning
The part of the brain or mind concerned with the reception and interpretation of sensory stimuli.
Example
The patient’s sensorium was clouded after the accident.
C2 noun /sfɪˈrɒmɪtər/

spherometer

Meaning
An instrument used for measuring the curvature of spherical surfaces.
Example
The scientist used a spherometer to measure the lens curvature.
C2 adjective /suːˈpɜːrnəl/

supernal

Meaning
Relating to the heavens; celestial or divine.
Example
The painting captured a supernal beauty that felt otherworldly.
C2 noun /sælv/

salve

Meaning
An ointment used to promote healing of the skin or as protection.
Example
She applied a salve to the burn on her hand.
C2 verb /ˌsuːpərˈhiːt/

superheat

Meaning
to heat a substance beyond its normal boiling point without it becoming vapor
Example
Engineers superheat the steam to increase the efficiency of the turbine.
C2 adjective /sɒmˈnɪfərəs/

somniferous

Meaning
Tending to induce sleep; soporific.
Example
The professor's somniferous lecture put half the class to sleep.
C2 noun /sɪˈkwiːlə/

sequela

Meaning
A condition that is the consequence of a previous disease or injury.
Example
Lung scarring can be a sequela of severe pneumonia.
C2 noun /ˌself əˈbeɪs.mənt/

self-abasement

Meaning
The act of belittling or humiliating oneself.
Example
His constant self-abasement made others uncomfortable.
C2 adjective /ˈsɒmnələnt/

somnolent

Meaning
Sleepy or drowsy; causing a desire to sleep.
Example
The somnolent lecture made half the class fall asleep.
C2 adjective /stəˈkɑː.təʊ/

staccato

Meaning
short and detached in sound or style, often used in music
Example
The pianist played the notes in a staccato rhythm.
C2 adjective /ˈslɪpʃɒd/

slipshod

Meaning
done in a careless, sloppy, or untidy way
Example
The project failed due to slipshod planning.
C2 noun /sɪlf/

sylph

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.
C2 adjective /ˌsɒfəˈmɒrɪk/

sophomoric

Meaning
showing immaturity and overconfidence, like a sophomore
Example
His sophomoric behavior embarrassed his friends.
C2 verb /swɪl/

swill

Meaning
to drink something greedily or in large amounts
Example
He swilled down the beer in seconds.
C2 adjective /ˈsfɪŋks laɪk/

sphinx-like

Meaning
Mysterious, enigmatic, or difficult to interpret
Example
Her sphinx-like smile made it hard to guess what she was thinking.
C2 noun /ˈsfɛrɔɪd/

spheroid

Meaning
A three-dimensional shape that is almost spherical but slightly flattened or elongated.
Example
The Earth is not a perfect sphere but an oblate spheroid.
C2 noun /ˈseɪnjər/

seignior

Meaning
A feudal lord; a man of authority in medieval Europe.
Example
The seignior demanded taxes from the peasants.
C2 noun /sɛkˈstɛt/

sextet

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.
C2 noun /ˈsɔː.dər/

Sawder

Meaning
flattering or wheedling talk; soft soap
Example
His sawder couldn't convince anyone of his sincerity.
C2 noun /ˈsuːpsɒ̃/

soupcon

Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
C2 noun /ˈsɜːrfɪt/

surfeit

Meaning
an excessive amount of something
Example
There was a surfeit of food at the festival.
C2 noun /ˈsɒfɪzəm/

sophism

Meaning
a clever but misleading argument; fallacious reasoning
Example
The politician's speech was full of sophism designed to mislead voters.
C2 adjective /ˈsʌmp.tʃuˌɛr.i/

sumptuary

Meaning
Relating to laws or regulations intended to limit personal spending on luxury goods.
Example
In medieval Europe, sumptuary laws restricted the wearing of expensive fabrics to the nobility.
C2 noun /skriːd/

screed

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.
C2 noun /səbˈsɜːviəns/

subservience

Meaning
the condition of being too willing to obey or serve others
Example
His subservience to authority annoyed his colleagues.
C2 adjective /ˌsɪkəˈfæntɪk/

sycophantic

Meaning
Behaving in a way that is excessively obedient or servile to gain favor.
Example
His sycophantic behavior annoyed his colleagues.
C2 noun /ˈsaʊər wʊd ˈæp.əl/

Sour wood apple

Meaning
a tropical fruit with hard shell and tangy flesh; elephant apple
Example
The sour wood apple has a unique taste that many people enjoy.
C2 noun /ˈslæt.ən/

slattern

Meaning
a woman who is untidy or slovenly in appearance or habits
Example
The house looked as if a slattern lived there.
C2 noun /ˌspoʊliˈeɪʃən/

spoliation

Meaning
The act of destroying or ruining something, often evidence or property.
Example
The court punished the company for the spoliation of evidence.
C2 adjective /ˌsæsərˈdoʊtl/

sacerdotal

Meaning
Relating to priests or the priesthood.
Example
The ritual had a distinctly sacerdotal character.
C2 noun /sɪˈmɪlɪtjuːd/

Similitude

Meaning
the quality or state of being similar; resemblance
Example
The similitude between the two paintings suggested they were by the same artist.
C2 adjective /ˌsuːdəˈrɪfɪk/

sudorific

Meaning
causing or increasing sweating
Example
The doctor prescribed a sudorific drug to help reduce the fever.
C2 adjective /səˈræfɪk/

seraphic

Meaning
Of or like a seraph; angelic, pure, and blissful.
Example
She gave him a seraphic smile that calmed his fears.
C2 noun /ˈsɪkəfənt/

sycophant

Meaning
A person who acts obsequiously toward someone important in order to gain advantage.
Example
The manager was surrounded by sycophants who agreed with everything he said.
C2 adjective /səˈɡeɪ.ʃəs/

sagacious

Meaning
Having or showing keen mental discernment and good judgment; wise.
Example
His sagacious leadership saved the company from failure.
C2 adjective /sɪˈkweɪʃəs/

sequacious

Meaning
Lacking independence of thought; blindly following.
Example
The sequacious students never questioned their teacher's opinions.
C2 adjective /ˈsɛrid/

serried

Meaning
pressed or crowded together, often in rows or ranks
Example
The soldiers stood in serried ranks, ready for inspection.
C2 noun /skʌlˈdʌɡəri/

skulduggery

Meaning
underhanded or dishonest behavior
Example
The politician was accused of financial skulduggery.
C2 verb /sleɪk/

slake

Meaning
To satisfy thirst or desire.
Example
She drank cold water to slake her thirst.
C2 noun /səbˈdʌk.ʃən/

subduction

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.
C2 noun /ˈstænʃən/

stanchion

Meaning
a strong upright bar or post used as support or to control movement
Example
The red rope was attached to the stanchions to guide the crowd.
C2 noun /sʌbˈɔːl.tən/

subaltern

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.
C2 adjective /ˌsʌpəzɪˈtɪʃəs/

supposititious

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.
C2 adjective /sɪmˈfoʊniəs/

symphonious

Meaning
Harmonious; producing a pleasant sound or agreement of sound.
Example
The choir's voices were symphonious and filled the hall with beauty.
C2 noun /səˈnɛs.əns/

senescence

Meaning
The process of growing old or the condition of aging.
Example
The biologist studied senescence in plants to understand aging.
C2 adjective /saɪˈdɪəriəl/

sidereal

Meaning
Relating to the stars or constellations; measured relative to the stars.
Example
Astronomers use sidereal time to track the positions of stars.
C2 noun /ˈsuːθˌseɪər/

soothsayer

Meaning
a person who claims to predict the future
Example
The king consulted a soothsayer before going to war.
C2 noun /ˈstrɪndʒənsi/

stringency

Meaning
the quality of being strict, precise, or severe
Example
The stringency of the new rules surprised everyone.
C2 noun /ˈskɪz.əm/ or /ˈsɪz.əm/

schism

Meaning
A division or split between strongly opposed parties, often in religion or organizations.
Example
The schism in the church led to the formation of two separate groups.
C2 adjective /səˈmætɪk/

somatic

Meaning
Relating to the body, especially as distinct from the mind.
Example
Yoga can improve both somatic and mental health.
C2 adjective /ˌsuːpərˈæn.ju.eɪ.tɪd/

superannuated

Meaning
old and no longer useful or valid; retired due to age
Example
The factory was filled with superannuated machines that slowed production.
C2 noun /ˈsʌplɪkənt/

supplicant

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.
C2 noun /ˈsɪnəd/

synod

Meaning
An assembly of the clergy in a Christian church convened to decide on issues of doctrine or administration.
Example
The synod gathered to discuss reforms in the church.
C2 noun /ˈsoʊbrɪˌkeɪ/

sobriquet

Meaning
a person's nickname or descriptive name
Example
The famous leader was known by the sobriquet 'The Iron Lady'.
C2 noun/verb /ˈsoʊdʒɜrn/

sojourn

Meaning
A temporary stay at a place; to stay temporarily
Example
She enjoyed a brief sojourn in Paris during the summer.
C2 noun /səˈɡæs.ə.t̬i/

sagacity

Meaning
The quality of being sagacious; having or showing keen mental discernment and good judgment.
Example
His sagacity made him a great leader.
C2 noun /ˈslʌɡərd/

sluggard

Meaning
A lazy, sluggish person.
Example
The sluggard refused to get out of bed even at noon.
C2 noun /sɪˈdɪʃ.ən/

Sedition

Meaning
conduct or speech inciting people to rebel against authority; treason
Example
The activist was charged with sedition for his inflammatory speeches.
C2 noun /ˈʃɑːdənfrɔɪdə/

schadenfreude

Meaning
pleasure derived from another person's misfortune
Example
He felt a sense of schadenfreude when his rival failed.
C2 verb /ˈstræɡəl/

straggle

Meaning
To move or spread in an irregular, scattered, or untidy way.
Example
The children began to straggle behind on the long hike.
C2 adjective /ˈʃɪft.ləs/

shiftless

Meaning
Lacking ambition or the ability to accomplish anything; lazy and unmotivated.
Example
He was seen as a shiftless young man with no goals.
C2 noun /ˌsuː.pər.əˈbʌn.dəns/

superabundance

Meaning
An excessive or overflowing amount of something.
Example
The garden was filled with a superabundance of flowers.
C2 adjective /səˈlɪsɪtəs/

solicitous

Meaning
showing concern or care for someone's health, happiness, or comfort
Example
She was always solicitous about the well-being of her students.
C2 noun /ˈsɪbəraɪt/

sybarite

Meaning
a person who loves luxury and pleasure
Example
The millionaire was a true sybarite who lived only for comfort and enjoyment.
C2 adjective /ˈsmɑːrmi/

smarmy

Meaning
Excessively flattering or ingratiating, often insincerely.
Example
The salesman gave a smarmy pitch that felt fake.
C2 noun /ˈstriːmlɪt/

streamlet

Meaning
a small stream; a tiny brook or rivulet
Example
A streamlet flowed through the meadow.
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

Meaning
secretly, in confidence, or in private
Example
The deal was made sub rosa to avoid public scrutiny.
C2 noun /ˈsælvoʊ/

salvo

Meaning
A simultaneous discharge of guns or release of bombs; a sudden outburst of cheers or applause.
Example
The soldiers fired a salvo to honor the fallen general.
C2 adjective /ˌsæpəˈneɪʃəs/

saponaceous

Meaning
Soapy or having the qualities of soap.
Example
The plant has saponaceous leaves that produce foam when rubbed in water.
C2 adjective, noun /səbˈmɜːrsəbl/

submersible

Meaning
capable of being submerged; a small underwater craft
Example
The scientists explored the deep ocean using a submersible.
C2 noun /ˌsɪləbɪˈkeɪʃən/

syllabication

Meaning
The division of words into syllables.
Example
Proper syllabication helps in correct pronunciation.
C2 adjective /ˈspɔːrtɪv/

sportive

Meaning
Playful, lively, or full of fun.
Example
The children were in a sportive mood during the picnic.
C2 verb /ˈstɪp.əl/

stipple

Meaning
to cover a surface with numerous small dots or specks, often in drawing or painting
Example
The artist stippled the canvas to create a textured effect.
C2 noun /ˈsɪmpəltən/

simpleton

Meaning
a foolish or gullible person
Example
They treated him like a simpleton who could not understand anything complex.
C2 adjective /sɪˈlæbɪk/

syllabic

Meaning
Relating to or based on syllables.
Example
The teacher explained the syllabic structure of the word.
C2 adjective /ˈslʌvənli/

slovenly

Meaning
Untidy or careless in appearance, habits, or work.
Example
His slovenly appearance made a bad impression at the interview.
C2 noun /sneɪk ɡɔːrd/

Snake gourd

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.
C2 verb, adjective /ˈstraɪeɪt/

striate

Meaning
to mark with stripes or grooves; striped or streaked in appearance
Example
The rock surface was striated by glacial movement.
C2 noun /ʃiːf/

sheaf

Meaning
a bundle of grain stalks laid lengthwise and tied together after reaping; a bundle of objects tied together
Example
The farmer carried a sheaf of wheat on his shoulder.
C2 noun /ˈsʌbtərˌfjuːdʒ/

subterfuge

Meaning
Deceit used to achieve one's goal; a trick or excuse to evade something.
Example
They used subterfuge to avoid paying taxes.
C2 noun /sɒmˈnæmbjʊlɪst/

somnambulist

Meaning
A person who sleepwalks.
Example
The somnambulist wandered out of the house at night.