surety
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C2 noun /ˈʃʊərəti/

surety

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.
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 /səbˈsɜːviəns/

subservience

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

snuffle

Meaning
to breathe noisily through the nose, often because of crying or a cold
Example
The child began to snuffle after crying for a long time.
C2 verb /səˈbɔːrn/

suborn

Meaning
to bribe or induce someone unlawfully to perform an act, especially to commit perjury
Example
The lawyer was accused of trying to suborn a witness.
C2 verb /skʌlk/

skulk

Meaning
to move or hide secretly, often because you are planning something bad or are feeling guilty
Example
He tried to skulk in the shadows to avoid being seen.
C2 noun /səbˈmɜːrʒən/

submersion

Meaning
the state of being under water
Example
The submersion of the fields lasted for several days after the heavy rain.
C2 verb /ʃʌk/

shuck

Meaning
To remove the outer covering, such as the husk of corn or shell of shellfish.
Example
She learned how to shuck oysters quickly.
C2 noun /ˈstrɪndʒənsi/

stringency

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

scintilla

Meaning
A tiny trace or spark of a specified quality or feeling.
Example
There wasn’t a scintilla of doubt in her mind.
C2 adjective /səˈluːtəˌtɔri/

salutatory

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.
C2 noun /sfɛˈrɪsɪti/

sphericity

Meaning
The quality or state of being spherical; roundness.
Example
The sphericity of the ball made it roll smoothly on the ground.
C2 verb /ˈsɪmpər/

simper

Meaning
to smile in a silly, self-conscious, or affected way
Example
She simpered at his compliment, clearly embarrassed.
C2 noun /ʃiːt fɪʃ/

Sheat-fish

Meaning
A large freshwater catfish with a broad flat head and long barbels
Example
The sheat-fish is one of the largest freshwater fish in South Asia.
C2 noun /skʌlˈdʌɡəri/

skulduggery

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

seditious

Meaning
Encouraging rebellion against authority.
Example
The activist spread seditious pamphlets among the crowd.
C2 noun /ˈskɪnˌflɪnt/

skinflint

Meaning
a person who spends as little money as possible; a miser
Example
The landlord was such a skinflint that he never repaired anything.
C2 noun /ˈsaɪnɪkjʊər/

sinecure

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.
C2 adjective /ˈsed.j ə.l ə s/

Sedulous

Meaning
showing dedication and diligence; persistent and careful in work
Example
She was sedulous in her research, spending hours in the library every day.
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 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 noun /ˈʃæd.ək/

Shaddock

Meaning
a large citrus fruit similar to grapefruit; pomelo
Example
The shaddock is the largest citrus fruit in the world.
C2 adjective /sʌbˈdʒeɪsənt/

subjacent

Meaning
lying immediately beneath; underlying
Example
The geological survey revealed subjacent layers of rock.
C2 noun /sɪˈnɛrəsɪs/

syneresis

Meaning
The contraction of two adjacent vowels into a single syllable or the separation of liquid from a gel.
Example
The yogurt showed syneresis when liquid separated on top.
C2 adjective /ˈspaɪnəs/

spinous

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

sobriquet

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

sluggard

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

sibilant

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

saponaceous

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

somnambulist

Meaning
A person who sleepwalks.
Example
The somnambulist wandered out of the house at night.
C2 verb /ʃiːð/

sheathe

Meaning
to put a sword or knife back into its cover
Example
He quickly sheathed his sword after the duel.
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 ˈsaɪəns ˈdezət

science-desert

Meaning
A region or area lacking in scientific development, research facilities, or educational institutions.
Example
J.C. Bose thrived in a science-desert.
C2 noun /ˈsʌfərəns/

sufferance

Meaning
patient endurance of pain, hardship, or delay; passive consent or tolerance
Example
He lived in poverty with quiet sufferance.
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 /ˈstrɪplɪŋ/

stripling

Meaning
a young man who is not yet fully grown
Example
The stripling dreamed of becoming a brave knight.
C2 noun /ˈsɔː.dər/

Sawder

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

Scorpion fish

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.
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 /ˈsɛpəlkər/

sepulcher

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.
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 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 verb /skwɛltʃ/

squelch

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.
C2 adjective /ˌsæsərˈdoʊtl/

sacerdotal

Meaning
Relating to priests or the priesthood.
Example
The ritual had a distinctly sacerdotal character.
C2 noun səˈtaɪ.ə.ti

satiety

Meaning
The feeling of being satisfied or full, especially with regard to food.
Example
High-fiber foods provide longer satiety.
C2 adjective /ˌsɒfəˈmɒrɪk/

sophomoric

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

sapid

Meaning
Having a pleasant taste; flavorful.
Example
The chef prepared a sapid dish that delighted everyone at the table.
C2 adjective /spraɪ/

spry

Meaning
active and lively, especially in old age
Example
The spry grandmother surprised everyone with her quick dance steps.
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 adjective /ˈsiːmli/

seemly

Meaning
proper or appropriate in behavior or appearance
Example
It was not seemly to argue loudly during the ceremony.
C2 noun /ˈstrætədʒəm/

stratagem

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.
C2 noun /ˈsɪŋ.krə.ni/

synchrony

Meaning
Coordination in time, harmony in action or movement.
Example
Their dance performance showed perfect synchrony.
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 /ˈsʌb.æs.ɪd/

subacid

Meaning
Slightly sour or acidic in taste or nature.
Example
The fruit had a subacid flavor that was refreshing on a hot day.
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 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 səˈluː.bri.əs

salubrious

Meaning
Health-giving; healthy; promoting health and well-being.
Example
The mountain air is salubrious and refreshing.
C2 noun /ˈsɪlvər kɑrp/

Silver carp

Meaning
a large freshwater fish with silvery scales, commonly farmed for food
Example
Silver carp is widely cultivated in fish farms across Asia.
C2 adjective /ˌsɛm.iˈkɒn.ʃəs/

semiconscious

Meaning
Only partly conscious; not fully aware of surroundings.
Example
He was semiconscious after the accident and could barely respond.
C2 adjective /ˈsækərɪn/

saccharine

Meaning
Excessively sweet or sentimental.
Example
His saccharine smile seemed insincere.
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 verb /ˌsuːpərɪnˈtɛnd/

superintend

Meaning
to oversee and direct the work or operation of something
Example
She was hired to superintend the construction project.
C2 verb /ˈsʌn.dər/

sunder

Meaning
To split apart or separate, especially with force.
Example
The war sundered families and friends.
C2 adjective /stɛnˈtɔːriən/

stentorian

Meaning
Extremely loud and powerful in sound.
Example
The teacher’s stentorian voice quieted the noisy classroom.
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 noun /ˈsʊrmə fɪʃ/

Surma fish

Meaning
a freshwater fish species found in the Surma river system of Bangladesh and northeastern India
Example
Surma fish is native to the rivers of Sylhet region.
C2 adjective /ˈsloʊθfəl/

slothful

Meaning
Lazy, idle, and unwilling to work.
Example
She was too slothful to get out of bed early.
C2 adjective /ˈsiːkwənt/

sequent

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

sirocco

Meaning
A hot, dry wind blowing from North Africa across the Mediterranean to southern Europe.
Example
The sirocco made the city unbearably hot and dusty.
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 /ˈsɪlvən/

sylvan

Meaning
Relating to or characteristic of the woods or forest.
Example
The cottage was set in a sylvan landscape full of tall trees.
C2 adjective /suːˈpɜːrnəl/

supernal

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

satrap

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.
C2 noun /ˈseɪ.ɡoʊ/

Sago

Meaning
starchy foodstuff obtained from the pith of various tropical palm stems
Example
She prepared sago pudding for dessert.
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 adjective /ˌsuː.pɚˈsɪl.i.əs/

supercilious

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.
C2 adjective /ˈsʌpliənt/

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.
C2 noun /ˈsɒfɪstri/

sophistry

Meaning
the use of clever but false arguments, often to deceive
Example
The politician's speech was full of sophistry.
C2 verb /ˈsʌplɪˌkeɪt/

supplicate

Meaning
To ask for something earnestly or humbly, often in a religious context.
Example
The villagers supplicated the gods for rain during the drought.
C2 noun /stɒˈkeɪd/

stockade

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.
C2 adjective /ˈseɪpiənt/

sapient

Meaning
Wise, or appearing to be wise.
Example
The professor gave a sapient response to the complex question.
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 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 /sɜːrˈsiːs/

surcease

Meaning
a temporary or final ending or stopping of something
Example
The noise finally came to a surcease after midnight.
C2 noun /ˈsɛrəf/

seraph

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.
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 adjective /ˌsuːpərˈnuːmərɛri/

supernumerary

Meaning
Exceeding the usual number; extra or unnecessary.
Example
The play included several supernumerary actors to fill the background scenes.
C2 adjective /ˈsteɪ.dʒi/

stagy

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

smarmy

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

synchronism

Meaning
The simultaneous occurrence of events or actions.
Example
The synchronism of the dancers' movements amazed the audience.
C2 adjective /splɪˈnɛtɪk/

splenetic

Meaning
bad-tempered, irritable, spiteful
Example
His splenetic remarks offended everyone in the room.
C2 noun /spjuːm/

spume

Meaning
Froth or foam, especially found on waves or liquids.
Example
The waves crashed against the rocks, leaving spume in the air.
C2 adjective /sɪˈlæbɪk/

syllabic

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

sallow

Meaning
Of an unhealthy yellow or pale brown color, often referring to skin.
Example
His sallow complexion made him look tired and sickly.
C2 adjective /ˌsuː.pər.ɪˈrɑː.ɡə.tɔːr.i/

supererogatory

Meaning
Going beyond what is required or expected; more than necessary.
Example
His donation was supererogatory, far beyond what anyone had asked for.
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 /sɒmˈnɪfərəs/

somniferous

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

stanch

Meaning
to stop the flow of blood or liquid from a wound or source
Example
The nurse quickly stanched the bleeding from the cut.
C2 verb /seɪt/

sate

Meaning
To satisfy fully or to excess.
Example
The huge meal sated their hunger after the long journey.
C2 adjective /ˈsɪbɪlaɪn/

sibylline

Meaning
Prophetic, mysterious, or cryptic in meaning.
Example
The old woman gave a sibylline warning about the future.
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 /ˌsɪɡnɪfɪˈkeɪʃən/

signification

Meaning
the meaning or sense conveyed by a word, action, or symbol
Example
The signification of the gesture was misunderstood.
C2 noun /ˈspɛndˌθrɪft/

spendthrift

Meaning
A person who spends money extravagantly or wastefully.
Example
The young prince was known as a spendthrift, wasting his fortune on lavish parties.
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 /ˈsætər/

satyr

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.
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 noun /ˈsuːpsɒ̃/

soupcon

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

streamlet

Meaning
a small stream; a tiny brook or rivulet
Example
A streamlet flowed through the meadow.
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 /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 noun /ˈsɪnjuː/

sinew

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.
C2 verb /swɪl/

swill

Meaning
to drink something greedily or in large amounts
Example
He swilled down the beer in seconds.
C2 noun ˌsʌb.dʒʊˈɡeɪ.ʃən

subjugation

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.
C2 noun ˈsɒmnələns

somnolence

Meaning
A state of drowsiness or sleepiness; inclination to sleep.
Example
The somnolence after a heavy meal made it hard to concentrate.
C2 adjective /sɪˈnɒptɪk/

synoptic

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.