sleep deprivation
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B2 noun sliːp ˌdɛprɪˈveɪʃən

sleep deprivation

Meaning
The condition of not having enough sleep; lack of adequate sleep.
Example
Sleep deprivation can severely impact mental health.
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 verb /ˈskwɒbəl/

squabble

Meaning
To argue noisily over something small or unimportant.
Example
The children squabbled over the last piece of cake.
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.
C1 adjective /ˈsæljʊˌtɛri/

salutary

Meaning
Producing good effects; beneficial, especially after something unpleasant.
Example
The accident was a salutary reminder to drive carefully.
B1 verb /spɛl/

spell

Meaning
to write or name the letters of a word in order; to mean or result in something
Example
Can you spell your name for me?
A1 adjective /ˈspɛʃəl/

special

Meaning
different from what is usual; better or greater than normal
Example
This gift is very special to me.
C1 adjective /ˈskeɪðɪŋ/

scathing

Meaning
severely critical; harshly scornful
Example
The critic wrote a scathing review of the movie.
B2 adjective /ˈstæt.ɪk/

static

Meaning
Lacking in movement, action, or change; stationary.
Example
Static ideas hinder progress.
C1 adjective /ˈsʌn.dri/

sundry

Meaning
Various or miscellaneous.
Example
The shop sells fruits, clothes, and sundry items.
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 noun /ˈsɛm.ɪ.nɛr.i/

seminary

Meaning
A school or college for training priests, ministers, or rabbis.
Example
He decided to enroll in a seminary to study theology.
B2 noun /ˈsəʊ.ʃəl.ɪ.zəm/

socialism

Meaning
An economic system where the means of production are owned by the state or community.
Example
In socialism, resources are distributed equally among citizens.
B2 noun /ˈsæb.ə.tɑːʒ/

Sabotage

Meaning
deliberate destruction of equipment or disruption of activities
Example
The factory was shut down due to an act of sabotage.
C1 adjective /skəˈlæstɪk/

scholastic

Meaning
Relating to schools, education, or academic learning.
Example
The school organizes scholastic competitions every year.
C2 adjective /svelt/

svelte

Meaning
Attractively thin, graceful, and elegant in appearance or movement.
Example
She looked svelte in the elegant black dress.
A2 noun /ˈʃaʊər/

shower

Meaning
a brief fall of rain or snow or a device for taking a bath or washing oneself
Example
After the workout, I took a quick shower to refresh myself.
C1 verb /ʃɜːrk/

shirk

Meaning
to avoid or neglect a duty or responsibility
Example
He always tries to shirk his responsibilities at work.
B2 noun /spaʊs/

spouse

Meaning
a person's husband or wife
Example
Each employee may include their spouse in the health insurance plan.
B2 adverb /ˈsɒftli/

softly

Meaning
in a gentle or quiet way.
Example
She spoke softly so as not to wake the baby.
C1 verb /ˈsnɪkər/

snicker

Meaning
to laugh quietly in a disrespectful or mocking way
Example
The students snickered when the teacher made a mistake.
B2 noun, verb /steɪk/

stake

Meaning
A share or interest in a business or venture; to risk or support something of value.
Example
He has a major stake in the new company.
C1 noun/adjective /ˈstɜː.lɪŋ/

sterling

Meaning
British money, especially pounds; of excellent quality.
Example
She was praised for her sterling work on the project.
C1 noun /ˈsɒlstɪs/

solstice

Meaning
the two times in the year when the sun is at its greatest distance from the equator (summer and winter solstice)
Example
People celebrate the summer solstice with festivals and rituals.
B2 noun /ˈsɑːfmɔːr/

sophomore

Meaning
a student in their second year of study at a university or high school
Example
He’s a sophomore in college, studying computer science.
B2 noun /ˈswiː.pər/

Sweeper

Meaning
a person whose job is to clean floors and streets by sweeping
Example
The sweeper cleaned the school corridor every morning.
C2 noun /ˈsɜːfdəm/

serfdom

Meaning
The status or condition of being a serf, bound to work for a lord.
Example
Many peasants in medieval Europe lived under serfdom.
A2 adjective /ˈstuː.pɪd/

Stupid

Meaning
lacking intelligence or common sense; foolish
Example
It was stupid of me to forget my umbrella on a rainy day.
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 noun /ˈskæf.əld/

Scaffold

Meaning
a temporary structure used by workers to stand on when building or repairing something high; a platform for execution
Example
The workers erected a scaffold to paint the building's exterior.
A2 noun /sneɪk/

Snake

Meaning
a long, legless reptile that moves by sliding along the ground
Example
The snake slithered through the grass quietly.
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 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.
B1 verb /ʃuːt/

shoot

Meaning
to fire a bullet or arrow from a weapon; to take a photograph or film
Example
He learned how to shoot a bow and arrow.
B2 noun /ˌsɛlf əˈwɛə.nəs/

self-awareness

Meaning
Conscious knowledge of one's own character, feelings, motives, and desires.
Example
Self-awareness helps in understanding one's emotions and actions.
B2 noun /sɛnˈseɪʃən/

Sensation

Meaning
a physical feeling or perception resulting from something that happens to or comes into contact with the body; a widespread reaction of interest and excitement
Example
The new singer became an overnight sensation.
C1 noun /ˈskævɪndʒər/

scavenger

Meaning
an animal or person that feeds on dead or discarded material
Example
Vultures are natural scavengers that clean up the environment.
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.
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.
A1 noun /speɪs/

space

Meaning
The dimensions of height, depth, and width within which all things exist and move.
Example
Space exploration expands human knowledge.
A1 noun /ˈʃɒpɪŋ/

shopping

Meaning
the activity of going to shops to buy things
Example
She spent the afternoon shopping for clothes.
B2 adjective /səˈbɜːrbən/

suburban

Meaning
relating to or characteristic of a suburb or the people living there
Example
They bought a house in a quiet suburban area.
C1 adjective /sər'pæs.ɪŋ/

Surpassing

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

Shrine

Meaning
a holy or sacred place dedicated to a specific deity, ancestor, hero, or saint
Example
Pilgrims visit the shrine to pray for good health.
C1 noun /strəˈtiː.dʒɪk ˈɪn.saɪts/

strategic insights

Meaning
Deep understanding and wisdom gained through careful analysis for planning purposes.
Example
Strategic insights guide policymaking.
C1 verb /səˈkʌm/

succumb

Meaning
To give in to pressure, temptation, or illness; to yield or fail to resist.
Example
He finally succumbed to his illness after a long struggle.
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 verb/noun /stuːp/

stoop

Meaning
To bend one's body forward and downward; also a small porch or staircase at the entrance of a house
Example
He had to stoop to pick up the coin.
A1 adjective /ʃɔːrt/

Short

Meaning
having a small length, height, or duration; not long
Example
The meeting was very short, lasting only ten minutes.
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 /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.
C1 verb /ˈsɪnɚdʒaɪzd/

synergized

Meaning
Combine in such a way that the total effect is greater than the sum of the individual effects.
Example
The teams were synergized to maximize productivity.
A2 adjective /ˈsɪmələr/

Similar

Meaning
alike; having characteristics in common
Example
The two sisters have similar interests in music.
B2 noun /ˈsɜːr.plʌs/

surplus

Meaning
An amount that is more than what is needed.
Example
The country has a surplus of food this year.
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 /sʌbˈdʒeɪsənt/

subjacent

Meaning
lying immediately beneath; underlying
Example
The geological survey revealed subjacent layers of rock.
C1 adjective /ˈsiː.di/

Seedy

Meaning
squalid and disreputable; shabby and run-down; full of seeds
Example
They avoided walking through the seedy part of town at night.
C1 noun /suˈpriː.mə.si/

Supremacy

Meaning
the state of being supreme; highest authority or power
Example
The country established naval supremacy in the region.
B2 noun /ˈsaɪrən/

siren

Meaning
A device that makes a loud prolonged sound as a signal or warning; in mythology, a creature that lures sailors with enchanting songs.
Example
The police car passed with its siren blaring.
C2 verb /sleɪk/

slake

Meaning
To satisfy thirst or desire.
Example
She drank cold water to slake her thirst.
A2 adverb /ˈsɪm.pli/

Simply

Meaning
in a clear and easy way; merely; just
Example
I simply wanted to help you with your homework.
B2 noun /ˈskriːnɪŋ/

screening

Meaning
the act of examining or testing people to detect disease or evaluate suitability; a showing of a movie or program
Example
The hospital offered free health screening for all employees.
C2 adjective /ˌsʌb.əˈkwɒt.ɪk/

subaquatic

Meaning
Existing, living, or located under water.
Example
Divers explored the subaquatic cave system filled with rare fish.
A2 adverb /ˈsʌd.ən.li/

Suddenly

Meaning
quickly and without warning; unexpectedly
Example
The car suddenly stopped in the middle of the road.
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 verb /ˈskwɒndər/

squander

Meaning
to waste money, time, or opportunities in a careless way
Example
He squandered his inheritance on gambling.
B2 adjective /saʊər/

Sour

Meaning
having an acid taste like lemon or vinegar; unpleasant or disagreeable
Example
The milk has gone sour and smells terrible.
B2 noun /ˈskʌlp.tʃər/

Sculpture

Meaning
the art of making objects by carving; a work of art made by carving
Example
The museum displays ancient Greek sculpture.
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.
B2 adverb /ˈsɛkʃuəli/

sexually

Meaning
in a way that relates to or involves sexual activity or feelings
Example
The film was considered too sexually explicit for young audiences.
C2 adjective /spraɪ/

spry

Meaning
active and lively, especially in old age
Example
The spry grandmother surprised everyone with her quick dance steps.
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.
C2 noun /ˈʃɑːdənfrɔɪdə/

schadenfreude

Meaning
pleasure derived from another person's misfortune
Example
He felt a sense of schadenfreude when his rival failed.
B2 adjective /ˈsɪk.li/

Sickly

Meaning
weak and unhealthy; prone to illness; appearing weak or pale
Example
The sickly child needed extra care and attention.
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.
A1 noun /sɛpˈtɛmbər/

september

Meaning
The ninth month of the year in the Gregorian calendar
Example
My birthday is in September, and I always celebrate it with friends.
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.
C2 verb /ˈsɪbəleɪt/

sibilate

Meaning
To pronounce with a hissing sound.
Example
The actor sibilated his lines for dramatic effect.
B2 noun /spaɪs/

spice

Meaning
a substance used to add flavor to food
Example
She added a pinch of spice to the curry for extra flavor.
C1 adjective /ˈsɔːrdɪd/

sordid

Meaning
involving immoral or dishonorable actions; dirty or unpleasant
Example
The newspaper exposed the politician's sordid past.
C1 noun /ˈstreɪnər/

Strainer

Meaning
a device having holes punched in it or made of crossed wires for separating solid matter from a liquid
Example
Use a strainer to drain the pasta water.
B2 noun ˌspɛk.jʊˈleɪ.ʃən

speculation

Meaning
Investment in stocks, property, or other ventures in the hope of gain but with the risk of loss.
Example
Stock market speculation can lead to high volatility.
A2 noun /ˈswɛtər/

sweater

Meaning
a warm knitted piece of clothing worn on the upper body
Example
She wore a red sweater to keep warm in the cold weather.
C2 adjective /ˈstɜːr.tər.əs/

stertorous

Meaning
Characterized by heavy snoring or breathing.
Example
The patient’s stertorous breathing alarmed the nurses.
C1 verb /ˈstrætɪfaɪ/

stratify

Meaning
to arrange or divide into layers, classes, or categories
Example
The researchers plan to stratify the data based on age groups.
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.
B2 noun /səˈvaɪvl/

survival

Meaning
the state of continuing to live or exist, typically in difficult conditions
Example
Survival in the wild can be a challenging experience.
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 adjective /səˈriːn/

serene

Meaning
Calm, peaceful, and untroubled; tranquil.
Example
The lake had a serene and peaceful atmosphere.
A1 adverb /soʊ/

so

Meaning
to such a degree or extent
Example
She was so happy with the gift.
C2 noun /ˈstriːmlɪt/

streamlet

Meaning
a small stream; a tiny brook or rivulet
Example
A streamlet flowed through the meadow.
B2 noun /suː.pɪər.iˈɔːr.ə.ti/

Superiority

Meaning
the quality or state of being superior; higher rank or quality
Example
His superiority in mathematics was evident from his test scores.
B1 adjective /sɪˈlek.tɪd/

selected

Meaning
carefully chosen from a group for a particular purpose
Example
He was one of the selected candidates for the scholarship.
C1 verb /spɔːn/

spawn

Meaning
to produce or generate, often in large numbers
Example
The video game has spawned many sequels.
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.
A1 noun /ˈswɪmɪŋ/

swimming

Meaning
the activity or sport of moving through water using the limbs
Example
Swimming is a great way to stay fit and healthy.
A1 noun /skaɪ/

Sky

Meaning
the region of the atmosphere and outer space seen from the earth
Example
The sky is blue today.
C1 verb /ˈstriːmlaɪnɪŋ/

streamlining

Meaning
The process of making an organization or system more efficient by simplifying or eliminating unnecessary steps
Example
Streamlining processes can significantly reduce operational costs.
B2 verb /səbˈmɪt/

submit

Meaning
to present for consideration; to surrender; to yield
Example
Please submit your assignment by Friday.
B1 noun /swiːt pəˈteɪtoʊ/

Sweet potato

Meaning
A root vegetable with sweet flesh, typically orange or purple in color
Example
Roasted sweet potato makes a healthy and delicious side dish.
B1 verb /skrætʃ/

scratch

Meaning
to rub a surface or skin with something sharp or rough, often to relieve itching
Example
The cat scratched the door to be let in.
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.
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.
A2 noun /ˈsuː.pəˌmɑː.kɪt/

supermarket

Meaning
a large self-service store selling food and household goods
Example
She went to the supermarket to buy groceries.
B1 noun /ˈsiː.hɔːrs/

Sea-horse

Meaning
a small marine fish with segmented bony armor, an upright posture, and a curled prehensile tail
Example
The seahorse gracefully floated among the coral reefs.
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.
A2 noun, verb, adjective /saʊnd/

sound

Meaning
a sensation perceived by the ear; to make or cause to make a noise; in good condition
Example
The bell sounded across the valley.
C1 noun /sɪv/

sieve

Meaning
a utensil with a mesh or perforated bottom, used for straining or sifting
Example
She used a sieve to strain the pasta.
B2 adverb /səˈpəʊzɪdli/

supposedly

Meaning
used to show that something is believed or claimed to be true, though it may not be
Example
He is supposedly the best player on the team.
C1 verb /səbˈvɜːrt/

subvert

Meaning
to undermine or overthrow an established system, authority, or institution
Example
The rebels tried to subvert the government.
C1 noun /ˈstænzə/

stanza

Meaning
a group of lines forming a unit in a poem or song
Example
The poem begins with a stanza describing nature.
C2 noun /ˌsɪnjuˈɒsɪti/

sinuosity

Meaning
The quality or state of being winding, curving, or having many turns.
Example
The sinuosity of the river made navigation challenging.
C2 verb /ˌsuːpərɪnˈtɛnd/

superintend

Meaning
to oversee and direct the work or operation of something
Example
She was hired to superintend the construction project.
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.
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.
B2 verb /ˈsɪmplɪfaɪ/

simplify

Meaning
to make easier to understand or do; to reduce complexity
Example
The teacher simplified the complex equation for the students.
A2 noun /stʌf/

stuff

Meaning
a collection of things or materials, typically unspecified or uncountable
Example
She packed all her stuff into the suitcase.
A2 noun /ʃɪp/

Ship

Meaning
a large watercraft that travels the world's oceans and seas
Example
The cargo ship departed from the port at dawn.
C2 adjective /səˈdʒɛstəbəl/

suggestible

Meaning
easily influenced by the suggestions of others
Example
Children are highly suggestible and may believe what they are told.
C1 adjective /ˈspjʊəriəs/

spurious

Meaning
Not genuine, authentic, or true; false or fake.
Example
The report was based on spurious claims.
A2 verb /siːm/

seem

Meaning
to give the impression of being something or having a particular quality
Example
He seems tired after the long journey.