skill
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A2 noun /skɪl/

skill

Meaning
the ability to do something well through training or experience
Example
Her skill in painting impressed everyone.
B2 noun /ˈsɛm.ɪ.nɑːr/

seminar

Meaning
A meeting for discussion or training, especially in an academic setting.
Example
The professor invited all students to attend the seminar on climate change.
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.
B2 noun səbˈstænʃəl ˈɪmpækt

substantial impact

Meaning
A significant, considerable, and meaningful effect or influence.
Example
Substantial impact is possible even with a few hours of volunteering.
C1 verb /ˈstɪntɪŋ/

stinting

Meaning
to supply sparingly or with restrictions
Example
He never stinting his efforts to help the poor.
C2 noun /spliːn/

spleen

Meaning
an organ in the body that produces lymphocytes and filters blood; also refers to bad temper or spite
Example
He vented his spleen on his coworkers after the meeting.
C1 verb ˈsɪŋ.krə.naɪz

synchronize

Meaning
To coordinate in time; to cause to occur or operate at the same time or rate.
Example
The dancers need to synchronize their movements.
B2 noun /ˌsɪmjuˈleɪʃən/

simulation

Meaning
the imitation of a situation or process
Example
The simulation helped the students understand the complex theory.
C1 adjective /spəˈrædɪk/

sporadic

Meaning
Occurring irregularly or in scattered instances rather than continuously.
Example
The region experienced sporadic rain showers throughout the week.
C2 noun /ˌsæv.wɑːr ˈfeər/

savoir-faire

Meaning
The ability to act or speak appropriately in social situations; polished social skills.
Example
She handled the delicate situation with remarkable savoir-faire.
B2 noun /səˈnɛərioʊ/

scenario

Meaning
a possible situation or sequence of events
Example
The company prepared for the worst-case scenario.
B1 verb /səˈspɛkt/

suspect

Meaning
to believe that someone has done something wrong; to doubt or mistrust
Example
I suspect he is lying about his whereabouts.
B1 adjective /ˈsoʊ kɔːld/

so-called

Meaning
referred to as or known by a particular name or title, often misleadingly
Example
The so-called expert couldn't answer the question.
C2 adjective /sæŋˈɡwɪniəs/

sanguineous

Meaning
Relating to blood; bloody.
Example
The surgeon examined the sanguineous discharge from the wound.
B2 noun /ˈskuːtər/

scooter

Meaning
a small two-wheeled vehicle powered by an engine or electricity
Example
She rides a scooter to work every day.
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 /ˈstɑːrtər/

starter

Meaning
a person or thing that starts something; the first course of a meal
Example
The starter of the meal was a fresh salad.
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 /ˈspaɪn.ləs/

Spineless

Meaning
lacking courage or determination; weak-willed
Example
He was too spineless to stand up for his beliefs.
B2 noun /siːdʒ/

siege

Meaning
A military operation in which a place is surrounded to force its surrender.
Example
The castle fell after a long siege.
B2 verb /stæk/

stack

Meaning
to arrange things in a neat pile or one on top of another
Example
He stacked the books neatly on the shelf.
A2 adjective /ˈsep.ər.ət/

Separate

Meaning
distinct; not connected; individual; apart
Example
Please keep your personal and professional lives separate.
A2 adjective /ˈsɪli/

Silly

Meaning
foolish; lacking good sense or judgement
Example
Don't be silly, of course you can do it!
C1 noun /spæt/

spat

Meaning
a short, petty quarrel or argument
Example
They had a brief spat about who should do the dishes.
A2 verb /stɪk/

stick

Meaning
to adhere or attach something to a surface
Example
The glue will stick to the paper.
B2 adjective /ˈstɛdi/

steady

Meaning
firm, stable, and not likely to change suddenly
Example
He kept his hand steady while painting the picture.
A2 noun /seɪl/

sale

Meaning
the exchange of a commodity for money; the action of selling something
Example
The store is having a sale on winter clothing.
B1 verb /səˈraʊnd/

surround

Meaning
To be all around someone or something.
Example
Mountains surround the small village.
B2 noun, verb /sɪn/

sin

Meaning
an immoral act considered to be a transgression against divine law; to commit an offense against religious or moral law
Example
He confessed his sin to the priest.
B1 noun /ˈsʌb.weɪ/

Subway

Meaning
an underground railway system; an underground passage for pedestrians
Example
I take the subway to work every morning because it's faster than driving.
B1 adjective /spəˈsɪfɪk/

specific

Meaning
Clearly defined or identified; particular; exact.
Example
Make a specific plan to beat procrastination.
C2 adjective /səˈpʌlkrəl/

sepulchral

Meaning
Relating to a tomb or burial; gloomy, dismal.
Example
The abandoned house had a sepulchral silence about it.
B2 noun /strɔː/

straw

Meaning
a thin tube for sucking up liquids; dried stalks of grain plants
Example
She drank the juice through a straw.
B1 noun /ˈsʌb.mə.riːn/

Sub-marine

Meaning
a warship with a streamlined hull designed to operate completely submerged in the sea
Example
The submarine dived deep into the ocean to avoid detection.
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.
A2 noun /sænd/

sand

Meaning
Small loose grains of crushed rock, found on beaches and deserts.
Example
Children built castles out of sand on the beach.
C2 noun /stɛp/

steppe

Meaning
A large flat area of unforested grassland, especially in southeastern Europe or Siberia.
Example
The nomads traveled across the vast steppe with their herds.
C1 noun /slæɡ/

slag

Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
B2 verb /ʃrɪŋk/

shrink

Meaning
to become smaller in size; to draw back in fear
Example
The sweater shrank after washing in hot water.
B2 verb /sɔːr/

soar

Meaning
to fly or rise high in the air; to increase rapidly or dramatically
Example
The eagle soared high above the mountains.
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 adjective /ˈstætʃətɔːri/

statutory

Meaning
Required, permitted, or enacted by law.
Example
The company must comply with all statutory regulations.
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.
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.
B2 verb /ˈʃɔːrtn/

shorten

Meaning
To make something shorter in length, duration, or extent
Example
She decided to shorten her speech to fit the time limit.
B2 adjective /ˈstʌb.ərn/

Stubborn

Meaning
refusing to change opinion or course of action; persistent; obstinate
Example
The stubborn child refused to eat his vegetables.
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.
B2 verb, noun /sniːz/

sneeze

Meaning
to expel air involuntarily from the nose and mouth due to irritation; the act of sneezing
Example
I had to sneeze during the meeting.
C1 noun /ˈʃʊɡ.ər ˈkæn.di/

Sugar candy

Meaning
crystallized sugar formed into small pieces; rock candy made from sugar syrup
Example
The children enjoyed eating colorful sugar candy at the festival.
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 verb /ˈsælvɪdʒ/

salvage

Meaning
To save something from loss, damage, or destruction.
Example
They managed to salvage some goods from the fire.
C1 adjective ˌsɪmbɪˈɒtɪk

symbiotic

Meaning
Involving interaction between two different organisms living in close physical association.
Example
The relationship between the bee and the flower is symbiotic.
C1 adjective /ˈskænti/

Scanty

Meaning
small in size or amount; insufficient; barely adequate
Example
The refugee camp had scanty food supplies.
B1 adjective /strɪkt/

Strict

Meaning
demanding exact conformity to rules; severe; rigorous
Example
The teacher is very strict about homework deadlines.
A2 noun /spiːd/

Speed

Meaning
the rate at which someone or something moves or operates
Example
The car reached a speed of 100 miles per hour.
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.
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.
B2 noun /ˈset.əl.mənt/

Settlement

Meaning
a place where people establish a community; an agreement that ends a dispute
Example
The early settlement was built near the river for easy access to water.
B2 noun /səˈspens/

Suspense

Meaning
a feeling of excited or anxious uncertainty about what will happen
Example
The movie kept us in suspense until the very end.
A1 noun /ˈsæləd/

salad

Meaning
a dish consisting of various ingredients, typically including vegetables, which are usually mixed with a dressing
Example
She made a fresh salad with lettuce, tomatoes, and cucumbers.
B2 noun /slɒt/

slot

Meaning
a narrow opening into which something fits or is placed
Example
Insert the card into the slot to open the door.
C2 noun /ˈsuːpsɒ̃/

soupcon

Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
C1 adjective /səbˈsɜːviənt/

subservient

Meaning
prepared to obey others unquestioningly; less important than something else
Example
She was too subservient to challenge his decision.
A1 pronoun /ˈsʌmbədi/

somebody

Meaning
an unspecified person
Example
Somebody is knocking at the door.
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.
C1 verb /ˈsaɪdˌstɛp/

sidestep

Meaning
To avoid something by stepping aside; to evade a problem or question indirectly.
Example
The politician tried to sidestep the difficult question.
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.
B2 verb /səˈluːt/

salute

Meaning
to greet with respect; to honor
Example
The soldiers saluted their commanding officer.
B2 verb /sɑːb/

sob

Meaning
to cry noisily while taking short breaths
Example
She began to sob uncontrollably after hearing the news.
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.
C2 verb /sɪˈkwɛstreɪt/

sequestrate

Meaning
To take legal possession of assets until a debt is paid or disputes are resolved.
Example
The court decided to sequestrate the company's property.
B2 noun /ˈswɛər wɜːrd/

swear-word

Meaning
An offensive or rude word used to express anger or frustration.
Example
He shouted a swear-word when he hit his toe.
A2 adjective /swiːt/

Sweet

Meaning
having a pleasant taste; kind and gentle; pleasing
Example
She has a sweet voice that everyone loves to hear.
C1 noun /stæɡˈneɪ.ʃən/

stagnation

Meaning
A state of inactivity or lack of growth, especially in an economy.
Example
High unemployment led to economic stagnation.
B2 adjective /ˈsteɪʃəˌneri/

stationary

Meaning
Not moving or not intended to be moved.
Example
The car remained stationary at the red light.
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.
A2 adverb /ˈsloʊli/

slowly

Meaning
in a slow manner
Example
She walked slowly to the door.
B2 adjective /ˈʃɔːrt ˌtempərd/

Short-tempered

Meaning
quick to lose one's temper; easily angered
Example
She became short-tempered when the traffic made her late for the meeting.
C1 noun /sɪˈnɪləti/

senility

Meaning
The state of being old and showing the weaknesses of age, especially mental decline.
Example
His forgetfulness was attributed to senility.
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 verb /struː/

strew

Meaning
to scatter or spread things untidily over a surface or area
Example
Clothes were strewn across the floor.
C2 adjective /ˈsɪbɪlənt/

sibilant

Meaning
Making or characterized by a hissing sound.
Example
The word 'snake' starts with a sibilant sound.
B2 noun /ˈsɜːdʒən/

surgeon

Meaning
a doctor who performs medical operations
Example
The surgeon performed a complex heart operation.
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.
B2 verb /swel/

swell

Meaning
to become larger, rounder, or thicker; to increase in size
Example
Her ankle began to swell after the injury.
C2 adjective /sɒmˈnɪfərəs/

somniferous

Meaning
Tending to induce sleep; soporific.
Example
The professor's somniferous lecture put half the class to sleep.
B1 adjective ˈʃɔːrt.tɜːrm

short-term

Meaning
Occurring over or involving a relatively short period of time.
Example
Investing in stocks can yield short-term profits.
B1 adverb /səˈpraɪzɪŋli/

surprisingly

Meaning
in a way that causes surprise or amazement
Example
Surprisingly, she finished the entire project in just one day.
C1 adjective /ˈskwɒlɪd/

squalid

Meaning
extremely dirty and unpleasant, often due to poverty or neglect
Example
He lived in a squalid room with broken furniture.
C1 /splɪnt/

splint

Meaning
A rigid device used to support and immobilize a broken or injured body part.
Example
The doctor applied a splint to stabilize the patient's broken arm.
B1 adverb /ˈspeʃ.əl.i/

Specially

Meaning
for a particular purpose; especially; specifically
Example
This gift was specially made for you.
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.
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 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.
B2 noun speɪs ɪksplɔːˈreɪʃən

space exploration

Meaning
The investigation of outer space by means of manned and unmanned spacecraft.
Example
Space exploration has expanded our knowledge of the universe.
C1 noun /ˈswɪndlɚ/

swindler

Meaning
a person who cheats or deceives others for money or gain
Example
The police finally caught the notorious swindler.
C1 adjective /ˈspɑːrtn/

spartan

Meaning
showing simplicity and lack of luxury; austere
Example
He lived in a spartan room with just a bed and a chair.
B2 adjective /slaɪ/

sly

Meaning
Clever in a deceitful or cunning way.
Example
She gave him a sly smile.
B2 noun /ˈspɛk.tə.kəl/

spectacle

Meaning
An impressive display or performance for viewers.
Example
The fireworks created a breathtaking spectacle in the night sky.
B2 noun ˈsəʊ.ʃəl ˈdʒʌs.tɪs

social justice

Meaning
Justice in terms of the distribution of wealth, opportunities, and privileges within a society.
Example
Social justice ensures equality of opportunity.
C2 verb /ˈsɛreɪt/

serrate

Meaning
To make a saw-toothed edge or notched margin.
Example
The craftsman serrated the knife blade for better cutting.
C1 adjective /səˈsɛp.tə.bəl/

susceptible

Meaning
Likely or liable to be influenced or harmed by a particular thing.
Example
Children are more susceptible to infections.
C1 noun ˌsteɪbəlaɪˈzeɪʃən

stabilization

Meaning
The process of making or becoming stable.
Example
The stabilization of the structure was essential after the earthquake.
B2 noun /səkˈses.ər/

Successor

Meaning
a person who succeeds another in office; someone who takes over a position or role
Example
The CEO announced his retirement and named his successor for the company.
B1 noun, verb /spoʊk/

spoke

Meaning
As a noun, a bar connecting the center of a wheel to its rim; as the past tense of 'speak'.
Example
The bicycle's spoke was bent after the accident.
B2 adjective səˈfɪs.tɪ.keɪ.tɪd

sophisticated

Meaning
Having great knowledge or experience of the world and knowing about fashion, culture, and other things that people think are socially important; highly developed or complex.
Example
Sophisticated designs enhance aesthetics.
C1 verb /ˈskʌt.əl/

scuttle

Meaning
To run hurriedly with short, quick steps; or to deliberately sink a ship.
Example
The children scuttled back to their seats when the teacher entered.
C1 adjective /ˈskɛtʃi/

sketchy

Meaning
not thorough or detailed; suspicious or unsafe
Example
The details of the project were still sketchy.
B2 noun /slɛdʒ/

sledge

Meaning
a vehicle for traveling over snow, often pulled by animals
Example
The children rode a sledge down the snowy hill.
C1 adjective /ˈsɔːrdɪd/

sordid

Meaning
involving immoral or dishonorable actions; dirty or unpleasant
Example
The newspaper exposed the politician's sordid past.
B2 noun /ˈsʌ.plɪ.mənt/

Supplement

Meaning
something that completes or adds to something else; a dietary product
Example
She takes vitamin supplements to maintain her health.
B2 adverb /ˈskeəs.li/

Scarcely

Meaning
hardly; barely; only just
Example
I could scarcely believe my eyes.
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 verb ˈsɪn.ɚ.dʒaɪz

synergize

Meaning
combine in such a way as to enhance effectiveness.
Example
The departments must synergize to improve efficiency.
C2 adjective /ˌstaʊtˈhɑːrtɪd/

stouthearted

Meaning
Brave, determined, and courageous
Example
The stouthearted soldier never gave up.
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 /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.
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.
B2 noun /ˈsɪɡ.nəlz/

signals

Meaning
A gesture, action, or sound conveying information or instructions.
Example
Signals from deep space were detected last week.
B2 verb /sɪp/

sip

Meaning
to drink in small quantities; to taste carefully
Example
She sipped her tea slowly while reading the newspaper.
A1 noun /ʃɜːrt/

Shirt

Meaning
a piece of clothing worn on the upper body with sleeves and buttons
Example
He wore a white shirt to the office.