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C1 adjective /ˈsʌpl/

supple

Meaning
Easily bending or moving without breaking; flexible and adaptable.
Example
The gymnast’s body was remarkably supple.
C1 noun/verb /spuːf/

spoof

Meaning
A humorous imitation of something, or to trick or parody someone or something.
Example
The comedian spoofed the politician’s speech to entertain the audience.
C1 noun /ˈstoʊəˌweɪ/

stowaway

Meaning
A person who hides on a ship, plane, or other vehicle in order to travel secretly without paying.
Example
The crew discovered a stowaway hiding in the cargo hold.
C1 verb /səbˈsaɪd/

subside

Meaning
to become less intense, violent, or severe; to sink or fall to a lower level
Example
After the storm, the floodwaters began to subside.
C1 adjective /ˈsiːzənəbəl/

Seasonable

Meaning
occurring at the right time; appropriate for the season; timely
Example
The seasonable rain helped the farmers with their crops.
C1 noun /ˈsɒl.ɪs/

Solace

Meaning
comfort or consolation in a time of distress or sadness
Example
She found solace in music after her loss.
C1 verb /ˈskruː.tɪ.naɪz/

scrutinize

Meaning
Examine or inspect closely and thoroughly.
Example
The scientist scrutinized the data before publishing his findings.
C1 verb /ˈsmoʊldər/

smolder

Meaning
to burn slowly with smoke but no flame; to show suppressed anger or emotion
Example
The fire smoldered for hours before it went out.
C1 noun səbˈsɪs.təns

subsistence

Meaning
The action or fact of maintaining or supporting oneself at a minimum level.
Example
Many farmers depend on subsistence agriculture.
C1 verb /sɪˈkriːt/

secrete

Meaning
to produce and release a substance from a cell, gland, or organ
Example
The pancreas secretes insulin to regulate blood sugar levels.
C1 noun/verb /ˈslʌmbər/

slumber

Meaning
A state of sleep; to sleep lightly or rest.
Example
The child slumbered peacefully through the night.
C1 noun səˈsteɪ.nə.bəl tekˈnɒl.ə.dʒi

sustainable technology

Meaning
Technology designed to meet present needs without compromising future generations' ability to meet their needs.
Example
Sustainable technology ensures a cleaner future.
C1 noun /sʌˈmeɪʃən/

summation

Meaning
The process of adding things together; a summary of points.
Example
The lawyer gave a powerful summation of the case.
C1 adjective /ˈsiː.naɪl/

senile

Meaning
Showing the weaknesses of old age, especially mental decline.
Example
The old man became senile and forgot familiar faces.
C1 verb ˈsɪn.θə.saɪ.zɪŋ

synthesizing

Meaning
Combine (a number of things) into a coherent whole.
Example
He excels in synthesizing ideas from different sources.
C1 adjective /ˈsɒljʊbəl/

soluble

Meaning
able to be dissolved, especially in water
Example
Sugar is soluble in water.
C1 noun /ˈstætʃər/

stature

Meaning
A person's natural height or their reputation and importance.
Example
Her intellectual stature made her a respected figure in academia.
C1 noun /ˈsteɪl.meɪt/

stalemate

Meaning
A situation in which no progress can be made or no party can win.
Example
Negotiations ended in a stalemate.
C1 noun /slæɡ/

slag

Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
C1 noun ˌsætʃəˈreɪʃən

saturation

Meaning
The state of being saturated; the degree or extent to which something is dissolved or absorbed
Example
The saturation of the market with similar products reduced sales.
C1 verb /ˈsʌkɪŋ/

sucking

Meaning
Drawing in a liquid, air, or other substance through the mouth or a tube by creating a vacuum; also used figuratively for something unpleasant or ineffective
Example
The baby is sucking on a pacifier.
C1 adjective sɪˈmæn.tɪk

semantic

Meaning
Related to meaning in language; concerning the interpretation of words and sentences.
Example
AI models use semantic analysis to understand context.
C1 verb /səbˈdjuː/

subdue

Meaning
To bring under control, especially by force; to overcome or quiet.
Example
The army was able to subdue the rebellion quickly.
C1 noun ˌsɪs.təˈmæt.ɪk ˈstræt.ə.dʒi

systematic strategy

Meaning
A methodical and organized plan or approach to achieve specific objectives.
Example
A systematic strategy was employed to achieve objectives.
C1 noun /ˌsæl.jʊˈteɪ.ʃən/

Salutation

Meaning
a greeting; an expression of goodwill
Example
The letter began with a formal salutation.
C1 verb /ˈsɪmjʊˌleɪt/

simulate

Meaning
to imitate the appearance, character, or behavior of something; to pretend or reproduce conditions artificially
Example
The pilot had to simulate an emergency landing during training.
C1 noun /ˌsɛrənˈdɪpɪti/

serendipity

Meaning
The occurrence of events by chance in a happy or beneficial way.
Example
Finding that old photo album was pure serendipity.
C1 noun /ˈʃeɪvɪŋ/

shaving

Meaning
the act of removing hair with a razor; a thin strip or piece shaved from something
Example
He bought a new cream for shaving.
C1 verb /splaɪs/

splice

Meaning
to join two pieces of rope, film, or other material by weaving or attaching them together
Example
The technician spliced the two wires to restore the connection.
C1 noun, verb /səˈpiːnə/

subpoena

Meaning
a legal document ordering someone to attend court; to summon someone with such a document
Example
The witness received a subpoena to appear in court next week.
C1 adjective /ˈstrɪndʒənt/

stringent

Meaning
strict, precise, and exacting
Example
The government imposed stringent measures during the crisis.
C1 noun /sɪˈnɒpsɪs/

synopsis

Meaning
a brief summary of the main points of a text, film, or research
Example
The publisher asked the author to submit a one-page synopsis of the novel.
C1 adjective /snaɪd/

snide

Meaning
mocking or insulting in an indirect way
Example
He couldn’t resist making a snide comment about her dress.
C1 verb /slɪŋk/

slink

Meaning
to move quietly and secretly, often to avoid being noticed
Example
The cat slunk into the room without making a sound.
C1 adjective /səˈnɔːrəs/

sonorous

Meaning
Deep, full, and rich in sound.
Example
The actor's sonorous voice filled the entire theater.
C1 noun /stɛntʃ/

stench

Meaning
A very strong and unpleasant smell.
Example
The stench of garbage filled the alley.
C1 adverb /ˈsɜːrtʃɪŋli/

searchingly

Meaning
In a way that seems to look for hidden meanings or truth.
Example
She looked at him searchingly, hoping for an honest answer.
C1 noun stɔːrm ɪnˌtensɪfɪˈkeɪʃən

storm intensification

Meaning
The process by which storms become stronger and more severe in intensity.
Example
Storm intensification is linked to climate change.
C1 adjective /ˈswɛltərɪŋ/

sweltering

Meaning
uncomfortably hot
Example
The sweltering heat made it hard to work.
C1 verb/noun /ˈsɒldər/

solder

Meaning
To join metal parts together by melting and putting a filler metal into the joint
Example
He soldered the broken wires back together.
C1 noun /ˌsɪmbɪˈəʊsɪs/

symbiosis

Meaning
A mutually beneficial relationship between different people or groups.
Example
The symbiosis between the two companies led to mutual growth.
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
C1 noun /ˈspɪnstər/

spinster

Meaning
An unmarried woman, often one who is older and considered unlikely to marry
Example
The novel featured a kind-hearted spinster who cared for the village children.
C1 adjective /ˈstæɡ.nənt/

Stagnant

Meaning
not moving or flowing; showing no activity or development
Example
The stagnant water in the pond was covered with algae.
C1 verb /ˈstɪp.jʊ.leɪt/

stipulate

Meaning
to demand or specify a condition in an agreement or contract
Example
The contract stipulates that payment must be made within 30 days.
C1 verb /ˈstæmər/

stammer

Meaning
To speak with sudden involuntary pauses and a tendency to repeat the initial letters of words.
Example
The nervous student began to stammer during his speech.
C1 verb /sɪˈkluːd/

seclude

Meaning
To keep someone away from other people; to isolate.
Example
The monk chose to seclude himself in the mountains.
C1 noun /sɔɪl ˈmæn.ɪdʒ.mənt/

soil management

Meaning
The application of operations, practices, and treatments to protect soil and enhance its performance.
Example
Proper soil management improves long-term agricultural productivity.
C1 noun /sɪˈkluːʒən/

seclusion

Meaning
The state of being private, away from other people.
Example
She spent the weekend in complete seclusion in her cabin.
C1 noun/verb /stæmˈpiːd/

stampede

Meaning
A sudden, uncontrolled rush of people or animals; to cause a mass movement.
Example
The loud noise caused a stampede of the crowd.
C1 verb, noun /sæp/

sap

Meaning
As a noun: the vital fluid in plants; As a verb: to gradually weaken or drain strength.
Example
The long journey began to sap his energy.
C1 adjective /ˈstraɪ.dənt/

strident

Meaning
loud and harsh; presenting a point of view in a forceful way
Example
His strident voice made the debate uncomfortable.
C1 verb /skʌf/

scuff

Meaning
to mark or scratch the surface of something by rubbing
Example
He scuffed his shoes on the pavement.
C1 adjective /ˈspjʊəriəs/

spurious

Meaning
Not genuine, authentic, or true; false or fake.
Example
The report was based on spurious claims.
C1 adjective /ˈstɔːlwərt/

stalwart

Meaning
Loyal, reliable, and hardworking; strongly built or sturdy.
Example
She has always been a stalwart supporter of the community.
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
C1 noun /ˈskælpəl/

scalpel

Meaning
A small and extremely sharp bladed instrument used for surgery and dissection.
Example
The surgeon carefully used a scalpel to make the first incision.
C1 noun/verb /ˈsuː.tʃər/

suture

Meaning
A stitch or row of stitches holding together the edges of a wound or surgical incision.
Example
The doctor used a suture to close the wound.
C1 adjective /səˈtɪrɪk/

satiric

Meaning
Relating to or using satire.
Example
The novel takes a satiric view of urban life.
C1 adjective /ˈsʌl.ki/

Sulky

Meaning
bad-tempered and sullen; moody
Example
The child became sulky when he couldn't get his favorite toy.
C1 noun /sɪˈtɑːr/

Sitar

Meaning
a traditional Indian stringed musical instrument with a long neck and resonating body
Example
The sitar creates beautiful ragas in Indian classical music.
C1 noun /stents/

stents

Meaning
Small mesh tubes used to treat narrow or blocked arteries.
Example
Stents were successfully placed using robotic techniques.
C1 noun /ˈsɪstərhʊd/

sisterhood

Meaning
The relationship between sisters, or a community of women united by shared experiences or goals.
Example
The feminist movement created a strong sense of sisterhood among women.
C1 adjective /ˈstɪltɪd/

stilted

Meaning
Speech or writing that is stiff, unnatural, or overly formal.
Example
His speech sounded stilted and rehearsed.
C1 adjective /ˌsæŋktɪˈmoʊniəs/

sanctimonious

Meaning
Making a show of being morally superior to others; hypocritically pious.
Example
He gave a sanctimonious speech about honesty while he himself was corrupt.
C1 verb /slaʊtʃ/

slouch

Meaning
To stand, sit, or move in a lazy or awkward way.
Example
He slouched in the chair, looking tired.
C1 verb /skʌlpt/

sculpt

Meaning
to create or shape something by carving or molding
Example
The artist sculpted a beautiful statue from marble.
C1 noun /ˈspaɪər/

spire

Meaning
a tall, pointed structure on top of a building, especially a church
Example
The church spire could be seen from miles away.
C1 noun /ˈsæf.aɪər/

Saphire

Meaning
a precious stone that is typically blue in color
Example
The royal crown was adorned with a large sapphire.
C1 adjective /səˈdɪs.tɪk/

sadistic

Meaning
Deriving pleasure from inflicting pain or suffering on others.
Example
The villain had a sadistic smile while hurting his enemies.
C1 verb /ˈstoʊnwɔːl/

stonewall

Meaning
To delay or block progress by refusing to cooperate or answer
Example
The witness tried to stonewall during the investigation.
C1 noun /ˈstrɑːtəm/

stratum

Meaning
a layer or level of material, or a social class in society
Example
The upper stratum of society enjoyed privileges not available to others.
C1 verb /səˈplænt/

supplant

Meaning
To take the place of something or someone, often by force or strategy.
Example
Digital platforms have supplanted traditional newspapers.
C1 adjective /ˈsʌltri/

sultry

Meaning
Uncomfortably hot and humid; also describes someone attractive in a passionate or sensual way.
Example
The sultry weather made it hard to focus on work.
C1 verb /ˈstaɪfl/

stifle

Meaning
to prevent or restrain an action, idea, or emotion; to suffocate
Example
She tried to stifle a laugh during the serious meeting.
C1 adjective /sɪˈmɛtrɪkəl/

symmetrical

Meaning
having parts on either side that match or are the same in shape, size, or arrangement
Example
The artist designed a symmetrical pattern on the floor.
C1 adjective /ˈsaɪz.mɪk/

seismic

Meaning
Relating to earthquakes or vibrations of the earth and its crust.
Example
The region is known for its seismic activity.
C1 noun ˈstræt.ə.sfɪər

stratosphere

Meaning
The layer of the earth's atmosphere above the troposphere, extending to about 50 km above the earth's surface.
Example
The stratosphere provides a unique environment.
C1 adjective /ˈsɒmbər/

somber

Meaning
Dark or dull in color or tone; gloomy or serious.
Example
The funeral had a somber atmosphere.
C1 verb /ˈʃʌdər/

shudder

Meaning
to tremble or shake suddenly, often due to fear, cold, or strong emotion
Example
She shuddered at the thought of walking alone in the dark forest.
C1 adjective /ˈsɛn.sər.i/

sensory

Meaning
Related to the five human senses (sight, hearing, taste, touch, smell).
Example
Sensory feedback enhances the VR experience.
C1 noun /sɪˈkriː.ʃən/

Secretion

Meaning
a process by which substances are produced and discharged from a cell or gland
Example
Insulin secretion is crucial for blood sugar regulation.
C1 noun səˈsteɪnəbəl ænd kəˈlæbərətɪv əˈproʊtʃ

sustainable and collaborative approach

Meaning
A method of working together that can be maintained over time without depleting resources or causing harm.
Example
A sustainable and collaborative approach is crucial for solving environmental problems.
C1 verb /ˈsætəˌraɪz/

satirize

Meaning
to mock or criticize something using satire
Example
The play satirizes the greed of modern corporations.
C1 verb /sərˈmaʊnt/

surmount

Meaning
to overcome a difficulty or obstacle
Example
He surmounted all the challenges to achieve his dream.
C1 verb /ʃʌnt/

shunt

Meaning
to move or turn aside; to push or divert from one track to another
Example
The train was shunted onto a different track.
C1 noun /stɛlθ/

stealth

Meaning
The act of moving, doing, or achieving something quietly and secretly.
Example
The cat moved with stealth towards its prey.
C1 noun ˌsteɪbəlaɪˈzeɪʃən

stabilization

Meaning
The process of making or becoming stable.
Example
The stabilization of the structure was essential after the earthquake.
C1 adjective /suːˈpɜːrlətɪv/

superlative

Meaning
Of the highest quality or degree; expressing the extreme form of an adjective or adverb.
Example
Her performance was superlative, earning her a standing ovation.
C1 noun /səˈsteɪnəbl ˈæɡrɪkʌltʃər/

sustainable agriculture

Meaning
Farming practices that meet current food needs while preserving environmental resources and maintaining the ability to produce food for future generations through ecologically sound methods.
Example
Sustainable agriculture practices protect the environment while ensuring food security.
C1 adjective /ˈseɪ.li.ənt/

salient

Meaning
Most important, prominent, or noticeable
Example
The report highlighted the salient points of the discussion.
C1 verb /ˈstaɪfəld/

stifled

Meaning
to suppress, hold back, or prevent something from happening
Example
He stifled a laugh during the serious meeting.
C1 verb /siːð/

seethe

Meaning
To be filled with intense but unexpressed anger or agitation.
Example
She was seething with anger after the unfair decision.
C1 adjective /ˈspaɪn.ləs/

Spineless

Meaning
lacking courage or determination; weak-willed
Example
He was too spineless to stand up for his beliefs.
C1 noun স্ক্রোলিং অ্যাডিকশন

scrolling addiction

Meaning
A compulsive need to continuously scroll through content on digital devices, particularly smartphones and social media platforms.
Example
Scrolling addiction is a growing concern among smartphone users.
C1 verb sɪˈkwɛstər

sequester

Meaning
To isolate or hide away.
Example
The carbon captured by trees can be sequestered for years.
C1 adjective /ˈstætʃətɔːri/

statutory

Meaning
Required, permitted, or enacted by law.
Example
The company must comply with all statutory regulations.
C1 noun speɪst ˌrep.ɪˈtɪʃ.ən

spaced repetition

Meaning
A learning technique that involves reviewing information at increasing intervals to improve long-term retention.
Example
Spaced repetition helps in long-term memory retention.
C1 adjective /ˈskræpi/

scrappy

Meaning
Determined and willing to fight or argue; also messy or disorganized.
Example
Despite being small, he was a scrappy fighter.
C1 noun /ˈsteɪ.ʃən.ər/

Stationer

Meaning
a person who sells paper, pens, pencils, and other office supplies
Example
The stationer recommended the best pens for writing exams.
C1 adjective /ˈsɪnləs/

Sinless

Meaning
free from sin; pure and innocent; without moral fault
Example
The innocent child appeared sinless in her pure white dress.
C1 noun /ˌsɛnsɪtaɪˈzeɪʃən/

sensitization

Meaning
The process of becoming sensitive to a substance, situation, or influence.
Example
The doctor warned about the sensitization caused by repeated exposure to chemicals.
C1 noun /səˈnɑːtə/

sonata

Meaning
A musical composition for one or more instruments, typically in several movements.
Example
She performed a beautiful Beethoven sonata on the piano.
C1 noun /spæt/

spat

Meaning
a short, petty quarrel or argument
Example
They had a brief spat about who should do the dishes.
C1 verb /ˈsaɪdˌtræk/

sidetrack

Meaning
To distract from the main subject or activity.
Example
She was sidetracked by an unexpected phone call.
C1 adjective /ˈstrætɪfaɪd/

stratified

Meaning
arranged or classified in layers or strata
Example
Society in the past was highly stratified based on class and wealth.
C1 adjective /sɛkˈtɛəriən/

sectarian

Meaning
relating to or characterized by the differences between sects, often leading to conflict
Example
The region has been troubled by sectarian violence for decades.
C1 adjective /ˈsɪn.tɪ.leɪ.tɪŋ/

scintillating

Meaning
brilliantly clever, exciting, or sparkling
Example
Her scintillating conversation kept everyone entertained.
C1 noun /ˌsɑːrdʒənt ˈmeɪdʒər/

sergeant-major

Meaning
A senior non-commissioned officer in the army responsible for discipline and administration within a unit.
Example
The sergeant-major inspected the troops before the parade.
C1 adverb spɒnˈteɪnɪəsli

spontaneously

Meaning
In a spontaneous way; naturally and without planning or external cause.
Example
Children learn spontaneously through peer interactions.
C1 verb /ˌsuːpərɪmˈpoʊz/

superimpose

Meaning
to place one thing on top of another so that both can be seen
Example
The editor superimposed text over the image.
C1 noun /ˈskruːpəl/

scruple

Meaning
A moral or ethical consideration that restrains actions.
Example
He had no scruples about lying to get ahead.
C1 noun /ˈstɪmjʊlənt/

stimulant

Meaning
A substance that raises levels of physiological or nervous activity in the body.
Example
Coffee is a common stimulant that helps people stay awake.
C1 adjective /seɪdʒ/

Sage

Meaning
wise; showing wisdom from experience; prudent; having good judgment
Example
The sage advice from the elder helped solve the problem.
C1 noun /ˈstændˌstɪl/

standstill

Meaning
a situation in which all movement or activity stops
Example
The traffic came to a standstill after the accident.
C1 verb /skwiːl/

squeal

Meaning
to make a high-pitched cry; to inform on someone
Example
The children squealed with delight when they saw the surprise.
C1 noun /ˌstætʃuˈɛt/

statuette

Meaning
A small statue, usually decorative or artistic.
Example
The artist won a gold statuette for his work.
C1 noun /ˌsæl.ɪ.naɪˈzeɪ.ʃən/

salinization

Meaning
The process of increasing salt content in soil.
Example
Excessive irrigation can cause salinization of farmland.
C1 adjective /ˈʃɑːdi/

shoddy

Meaning
badly made or done; of poor quality
Example
The contractor did a shoddy job on the repairs.
C1 adjective /ˈskrʌfi/

Scruffy

Meaning
untidy or unkempt in appearance; shabby and worn
Example
The scruffy old dog wandered through the streets looking for food.
C1 verb /ˈskʌr.i/

scurry

Meaning
To move quickly with short, hurried steps.
Example
The mice scurried across the kitchen floor when the lights turned on.