sustainable technology
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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 /ˈspiːʃiː/

specie

Meaning
money in the form of coins rather than notes or credit
Example
The transaction was made in specie.
C1 adjective /ˈstɛlər/

stellar

Meaning
Relating to stars; outstanding or excellent.
Example
She gave a stellar performance in the play.
C1 verb /səbˈstænʃieɪt/

substantiate

Meaning
To provide evidence to support or prove the truth of something.
Example
The lawyer worked to substantiate the claims with solid evidence.
C1 noun /ˈsɪndɪkət/

syndicate

Meaning
A group of individuals or organizations combined to promote a common interest or carry out a business venture.
Example
A syndicate of investors bought the struggling company.
C1 noun/verb /sleɪt/

slate

Meaning
a fine-grained rock used for roofing or writing; to schedule or designate for a task
Example
The meeting is slated for next Monday.
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 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 noun /ˈsɜːrtʃɑːrdʒ/

surcharge

Meaning
an additional charge or payment added to the usual cost
Example
The airline ticket had a fuel surcharge added to it.
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/verb /ˈslʌmbər/

slumber

Meaning
A state of sleep; to sleep lightly or rest.
Example
The child slumbered peacefully through the night.
C1 adjective ˈsɒvrɪn

sovereign

Meaning
Possessing supreme or ultimate power; independent.
Example
The sovereign government has control over its currency.
C1 verb /ʃraʊd/

shroud

Meaning
to cover or hide; to wrap in cloth
Example
The mountain peak was shrouded in mist.
C1 adjective /ˈsɛnʃuəs/

sensuous

Meaning
Relating to or affecting the senses rather than the intellect; pleasing to the senses.
Example
The garden was filled with sensuous colors and fragrances.
C1 adjective ˈskruː.pjʊ.ləs

scrupulous

Meaning
Diligent, thorough, and extremely attentive to details; having moral integrity; acting in strict regard for what is considered right or proper.
Example
He is known for being scrupulous in his work.
C1 adjective /ˈskrɔːni/

scrawny

Meaning
very thin and bony, often looking unhealthy
Example
The scrawny boy could barely lift the heavy bag.
C1 noun /spɛk/

speck

Meaning
A very small spot, mark, or particle.
Example
There was a tiny speck of dust on the glass table.
C1 noun /ˈslændər/

Slander

Meaning
the action of making false spoken statements damaging to someone's reputation
Example
The politician sued the newspaper for slander.
C1 noun /ˌsɒl.jʊˈbɪləti/

solubility

Meaning
The ability of a substance to dissolve in a solvent.
Example
The solubility of salt in water is high.
C1 noun /ˈsʌm.ɪt əv ðə ˈfjuː.tʃər/

Summit of the Future

Meaning
A high-level conference focused on addressing future challenges and opportunities.
Example
The Summit of the Future addressed global challenges.
C1 noun /straɪf/

strife

Meaning
angry or violent conflict; struggle or discord
Example
The region has been torn apart by political strife.
C1 adjective /ˈsʌlən/

sullen

Meaning
bad-tempered and gloomy; silently resentful
Example
She gave him a sullen look and walked away.
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 noun /ˌsæbəˈtɜːr/

saboteur

Meaning
A person who engages in sabotage.
Example
The saboteur was arrested before he could plant the bomb.
C1 noun /slɪt/

Slit

Meaning
a long narrow opening or cut
Example
There was a small slit in the fabric.
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 verb /slɪŋ/

sling

Meaning
to throw or hang something roughly or carelessly
Example
He slung his bag over his shoulder before leaving.
C1 adjective /stjuːˈpɛndəs/

stupendous

Meaning
extremely impressive; amazing in size, degree, or excellence
Example
The magician’s performance was simply stupendous.
C1 noun /ˌstætɪˈstɪʃən/

statistician

Meaning
A person who specializes in collecting, analyzing, and interpreting numerical data.
Example
The statistician presented the survey results with great clarity.
C1 adjective /ˈstɪndʒi/

stingy

Meaning
unwilling to spend or give; miserly
Example
He is too stingy to buy a gift for his friend.
C1 adjective /ˈskænti/

Scanty

Meaning
small in size or amount; insufficient; barely adequate
Example
The refugee camp had scanty food supplies.
C1 noun ˈsʌb.tɛkst

subtext

Meaning
Hidden meaning or message behind spoken or written words
Example
The subtext of his speech suggested disagreement.
C1 noun /sərˈveɪər/

surveyor

Meaning
A person who measures and maps land, buildings, or other features.
Example
The surveyor measured the land for construction.
C1 noun /səbˈvɜːrʒən/

subversion

Meaning
the act of trying to destroy or undermine an established system or authority
Example
The government accused the rebels of planning subversion.
C1 verb /snɪp/

snip

Meaning
to cut something quickly with scissors or a sharp tool
Example
She snipped the loose thread from her dress.
C1 noun /ˈstɛə.rɪ.əʊˌtaɪ.pɪŋ/

stereotyping

Meaning
A widely held but fixed and oversimplified image or idea of a particular type of person or thing.
Example
Stereotyping people based on their race is harmful.
C1 adjective /ˌsɛlf ˈraɪtʃəs/

self-righteous

Meaning
Having or showing an attitude of moral superiority; believing one’s own beliefs are the only right ones.
Example
His self-righteous comments made everyone uncomfortable.
C1 verb /spɜːrn/

spurn

Meaning
To reject something or someone with disdain or contempt.
Example
She spurned his offer of help.
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 /ˈsæŋk.ʃən/

Sanction

Meaning
official permission or approval; a penalty for disobeying a rule
Example
The government imposed economic sanctions on the country.
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 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.
C1 adjective /ˈsɔːsi/

saucy

Meaning
Boldly rude, cheeky, or playfully disrespectful.
Example
The child gave a saucy reply to his teacher.
C1 verb /snɪər/

sneer

Meaning
to smile or speak in a mocking or contemptuous way
Example
She sneered at his attempt to sing.
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 /ˈsɪk.əl/

Sickle

Meaning
a tool with a curved metal blade and short handle used for cutting grain crops
Example
The farmer harvested wheat using a traditional sickle.
C1 adjective /ˈstɪltɪd/

stilted

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

stents

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

Satan

Meaning
the chief evil spirit; the Devil in Christian and Islamic belief
Example
According to religious texts, Satan tempts people to sin.
C1 adjective /sɔɪld/

soiled

Meaning
dirty or stained; not clean
Example
His clothes were soiled after playing in the mud.
C1 noun /ˈsɜːrəɡət/

surrogate

Meaning
A substitute, especially a person deputizing for another in a specific role or office.
Example
The surrogate mother gave birth to the child after carrying it for nine months.
C1 adjective /ˈsɒnɪk/

sonic

Meaning
Relating to or involving sound waves or speed of sound.
Example
The jet created a loud boom when it broke the sonic barrier.
C1 noun /swiːt.laɪm/

Sweetlime

Meaning
a citrus fruit that is sweeter and less acidic than regular lime
Example
The sweetlime juice was refreshing on a hot day.
C1 adjective /səkˈsɪŋkt/

succinct

Meaning
Briefly and clearly expressed; characterized by clear, precise expression in few words.
Example
His speech was succinct and impactful.
C1 noun /ˈsaɪ.ən/

scion

Meaning
a descendant of a wealthy, aristocratic, or influential family
Example
He is the scion of a wealthy industrialist family.
C1 verb /səˈfɪstɪkeɪt/

sophisticate

Meaning
to make something more complex or refined; to educate or develop in taste and manners
Example
Traveling abroad helped sophisticate his worldview.
C1 noun /ˌspɒn.təˈneɪ.ɪ.ti/

spontaneity

Meaning
The quality of being spontaneous; natural and unplanned behavior.
Example
His spontaneity makes him a great conversationalist.
C1 adjective /ˈskeɪ.li/

Scaly

Meaning
covered with scales; having a rough surface like scales
Example
The fish has scaly skin.
C1 noun /ˈspɛktər/

specter

Meaning
A ghost or spirit; something that causes fear or dread.
Example
The specter of war still haunts the region.
C1 adjective /ˌsɛlf əbˈzɔːrbd/

self-absorbed

Meaning
Excessively preoccupied with oneself and one’s own thoughts, feelings, or interests.
Example
He was too self-absorbed to notice his friend's distress.
C1 noun sælˈveɪʃən

salvation

Meaning
Deliverance from sin and its consequences, believed by Christians to be brought about by faith in Christ.
Example
The story revolves around the theme of salvation.
C1 noun /ˈsɪmətri/

symmetry

Meaning
the quality of having balanced proportions or identical parts facing each other
Example
The building’s symmetry impressed the visitors.
C1 noun /ˈsɛvərəns/

severance

Meaning
the act of ending something, especially a relationship or employment; compensation paid upon termination
Example
The company offered him severance pay after his job ended.
C1 noun /ˌsæl.jʊˈteɪ.ʃən/

Salutation

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

sacrilege

Meaning
Violation or misuse of what is regarded as sacred.
Example
Stealing from the temple was considered an act of sacrilege.
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 /ˈsaɪnəs/

sinus

Meaning
A cavity within a bone or tissue, especially those in the bones of the face connected with the nasal cavities.
Example
He suffered from a sinus infection that caused headaches.
C1 /skwɒt/

squat

Meaning
to crouch or sit with knees bent and body close to the ground
Example
He squatted down to tie his shoes.
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 noun /səbˈmɜːrdʒəns/

submergence

Meaning
the act or process of being submerged or going underwater
Example
The submergence of coastal areas is a major concern due to rising sea levels.
C1 adjective /ˌsɛrənˈdɪpɪtəs/

serendipitous

Meaning
Occurring or discovered by chance in a happy or beneficial way.
Example
Their meeting at the café was purely serendipitous.
C1 noun /slæb/

slab

Meaning
a large, thick, flat piece of stone, concrete, or other hard material
Example
The workers laid a concrete slab for the foundation.
C1 adjective /ʃruːd/

Shrewd

Meaning
having or showing sharp powers of judgment; astute
Example
The shrewd businessman made a profitable deal in the competitive market.
C1 verb /ˈsɛvər/

sever

Meaning
to cut off or separate, especially by cutting; to end a connection or relationship
Example
He had to sever ties with the company after the dispute.
C1 noun /ˈʃɜːrbət/

sherbet

Meaning
a sweet flavored drink or a frozen dessert made from sweetened fruit juice
Example
On hot days, she enjoys a glass of lemon sherbet.
C1 adjective /ˌsækrəˈlɪdʒəs/

sacrilegious

Meaning
Showing disrespect or irreverence toward something sacred.
Example
The painting was criticized as being sacrilegious.
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 /ˈsɪnjuəs/

sinuous

Meaning
Having many curves, bends, or turns; winding.
Example
The hikers followed a sinuous path through the forest.
C1 adjective /sər'pæs.ɪŋ/

Surpassing

Meaning
exceeding; going beyond; outstanding
Example
Her surpassing beauty made everyone stop and stare.
C1 verb /ˈsaɪdˌtræk/

sidetrack

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

symphonic

Meaning
relating to or having the character of a symphony or symphony orchestra
Example
The concert featured a symphonic masterpiece.
C1 noun /ˈskaʊndrəl/

scoundrel

Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
C1 noun /ˌstætʃuˈɛt/

statuette

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

shale

Meaning
a fine-grained sedimentary rock that can be split into thin layers
Example
The region is rich in shale and natural gas deposits.
C1 adjective /ˈstʌm.pi/

Stumpy

Meaning
short and thick; having a short, thick appearance
Example
The stumpy little dog wagged its tail enthusiastically.
C1 noun /ʃæk/

Shack

Meaning
a small, crudely built dwelling; a poorly constructed building
Example
The fisherman lived in a small shack near the beach.
C1 noun /ˈskwɒlər/

squalor

Meaning
the state of being extremely dirty and unpleasant, especially due to poverty or neglect
Example
They lived in squalor without basic facilities.
C1 verb /sərˈmaɪz/

surmise

Meaning
to suppose something is true without having evidence
Example
She surmised that he was not coming to the meeting.
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 noun /ˈstaɪləs/

stylus

Meaning
a small tool used for writing, drawing, or touching screens
Example
She used a stylus to draw on her tablet.
C1 noun /ˈstɒpɪdʒ/

stoppage

Meaning
The act of stopping or ceasing; a halt in operation or activity
Example
The sudden stoppage of the train caused delays for all passengers.
C1 noun /ˈsɔːrsəri/

sorcery

Meaning
the use of magical powers, especially through spells and enchantments
Example
The villagers believed the illness was caused by sorcery.
C1 verb /səbˈsɪst/

subsist

Meaning
To maintain or support oneself, especially at a minimal level.
Example
Many villagers still subsist on fishing and farming.
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 verb /slaʊtʃ/

slouch

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

stencil

Meaning
A thin sheet of material with a design cut out, used to produce the design on the surface below by applying paint or ink through the cut-out holes.
Example
The artist used a stencil to paint identical stars on the wall.
C1 adjective /səbˈsɪd.i.ər.i/

Subsidiary

Meaning
less important than the main thing; secondary; of or relating to a subsidiary company
Example
The subsidiary company handles all overseas operations.
C1 noun /stɑːr fruːts/

Star Fruits

Meaning
yellow tropical fruits that form a star shape when sliced crosswise; tangy and crisp taste
Example
When you slice star fruits, they look like beautiful yellow stars on your plate.
C1 adjective /səˈnɔːrəs/

sonorous

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

smattering

Meaning
A small amount or superficial knowledge of something.
Example
He has a smattering of Spanish.
C1 adjective /ˈstrɪndʒənt/

stringent

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

substitution

Meaning
the action of replacing someone or something with another
Example
The substitution of the old system with the new one was difficult.
C1 noun ˈsʌfrɪdʒ

suffrage

Meaning
The right to vote in political elections; the principle of political representation.
Example
Universal suffrage was a key demand.
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 noun ˈsɪmbəlɪzəm

symbolism

Meaning
The use of symbols to represent ideas or qualities.
Example
The use of symbolism in the novel is masterful.
C1 noun /ˈsteɪtəs kwoʊ/

status quo

Meaning
The existing state of affairs, especially regarding social or political issues.
Example
The government decided to maintain the status quo until further review.
C1 noun /ʃɑːrd/

shard

Meaning
a broken piece of glass, metal, or pottery
Example
He cut his finger on a shard of glass.
C1 noun /streɪt/

strait

Meaning
A narrow passage of water connecting two seas or two large areas of water.
Example
The Strait of Gibraltar connects the Atlantic Ocean and the Mediterranean Sea.
C1 adjective /səˈdʒɛstɪv/

suggestive

Meaning
tending to suggest ideas or images; sometimes implies something sexual or provocative
Example
The painting was highly suggestive and sparked much debate.
C1 verb /sərˈmaʊnt/

surmount

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

sociability

Meaning
The quality or state of being sociable; friendliness.
Example
Her sociability made her popular in the office.
C1 noun /ˌsəʊ.ʃi.əʊˈek.ə.nɒm.ɪk ˈprɒɡ.res/

socioeconomic progress

Meaning
Advancement in both social and economic conditions of a society or community.
Example
Socioeconomic progress uplifts marginalized communities.
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 noun /ˈskruːpəl/

scruple

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

stigmatize

Meaning
to describe or regard someone as worthy of disgrace or disapproval
Example
People with certain illnesses are often unfairly stigmatized.
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 noun, verb /ˈskʌf.əl/

scuffle

Meaning
a short, confused fight or struggle; to engage in such a fight
Example
Two players scuffled on the field after the foul.
C1 noun /ˈsʌtlti/

subtlety

Meaning
The quality or state of being subtle.
Example
She understood the subtlety of the situation.