seismic
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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.
A2 noun /spɔːt/

sport

Meaning
an activity involving physical exertion and skill in which an individual or team competes against another or others for entertainment
Example
Football is a popular sport around the world.
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.
B1 noun /ˈsɜr.fɪs/

Surface

Meaning
the outside part or uppermost layer of something
Example
The submarine emerged to the surface of the ocean.
C2 noun /ˈseɪ.li.əns/

salience

Meaning
The quality of being particularly noticeable or important; prominence.
Example
The salience of the issue was highlighted in the debate.
B2 noun /stɪŋk/

Stink

Meaning
a strong unpleasant smell; bad odor
Example
The garbage created a terrible stink in the kitchen.
C1 adjective /smʌɡ/

smug

Meaning
having or showing an excessive pride in oneself or one's achievements
Example
He wore a smug smile after winning the debate.
B2 verb /səˈrɛndər/

surrender

Meaning
to give up or yield to an opponent or authority
Example
The army finally surrendered after weeks of fighting.
C1 noun /slɪt/

Slit

Meaning
a long narrow opening or cut
Example
There was a small slit in the fabric.
C1 adjective /ˈsʌbstəntɪv/

substantive

Meaning
Having a firm basis in reality; important, meaningful, or considerable.
Example
The company made substantive changes to its policy.
B1 noun /ˈʃæd.oʊ/

Shadow

Meaning
a dark area where light is blocked by something; a person's silhouette
Example
The tree cast a long shadow across the garden in the evening.
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 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 noun /sɪˈkluːʒən/

seclusion

Meaning
The state of being private, away from other people.
Example
She spent the weekend in complete seclusion in her cabin.
B1 adjective /ˈsɔːlti/

Salty

Meaning
having the taste of salt; containing salt; tasting of seawater
Example
The salty ocean water made her thirsty.
B2 noun /ˈskɒlərʃɪp/

scholarship

Meaning
an award or grant to support a student's education
Example
She received a scholarship to study abroad.
C2 adjective /ˌsuːdəˈrɪfɪk/

sudorific

Meaning
causing or increasing sweating
Example
The doctor prescribed a sudorific drug to help reduce the fever.
B1 verb /ˈsʌfər/

suffer

Meaning
to experience pain, distress, or hardship
Example
She suffered from a severe headache all day.
C2 noun /ˈslʌɡərd/

sluggard

Meaning
A lazy, sluggish person.
Example
The sluggard refused to get out of bed even at noon.
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.
C1 verb /ˈskruː.tɪ.naɪz/

scrutinize

Meaning
Examine or inspect closely and thoroughly.
Example
The scientist scrutinized the data before publishing his findings.
B2 noun, verb /stiːm/

steam

Meaning
the vapor into which water is converted when heated; to emit or treat with steam
Example
The kettle was steaming on the stove.
B1 noun, verb /ˈseɪ.lɪŋ/

sailing

Meaning
The act of traveling in a boat or ship using sails; the sport or activity of navigating a boat with sails.
Example
We went sailing on the lake during the summer.
B2 adjective /ˈslɪp.ər.i/

Slippery

Meaning
smooth and difficult to hold; causing sliding or slipping
Example
The wet floor was very slippery after cleaning.
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.
B2 noun /stəˈbɪl.ə.ti/

Stability

Meaning
the state of being stable; firmness; steadiness
Example
Political stability is essential for economic growth.
B2 verb /slæʃ/

slash

Meaning
to cut with a sharp blade; to reduce drastically
Example
The company slashed prices to attract more customers.
B2 verb /sɜːrdʒ/

surge

Meaning
to move suddenly and powerfully forward or upward
Example
The crowd surged forward when the gates opened.
C1 noun /səˈlɛmnɪti/

solemnity

Meaning
the state or quality of being serious and dignified
Example
The ceremony was conducted with great solemnity.
B2 noun /spekˈteɪtər/

Spectator

Meaning
a person who watches at a show, game, or other event; an observer
Example
The stadium was filled with excited spectators.
B2 adjective /skeərs/

Scarce

Meaning
rare; not easily found; existing in small quantities
Example
Fresh water is becoming increasingly scarce in desert regions.
C1 adjective /spəˈrædɪk/

sporadic

Meaning
Occurring irregularly or in scattered instances rather than continuously.
Example
The region experienced sporadic rain showers throughout the week.
B2 verb /ˈsmʌɡəl/

smuggle

Meaning
to move goods illegally into or out of a country
Example
The gang tried to smuggle gold across the border.
A1 adjective strɒŋ

strong

Meaning
Having the power to move heavy weights or perform other physically demanding tasks.
Example
A strong defense secures victory.
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.
C2 adjective, adverb /ˈsaɪdlɔːŋ/

sidelong

Meaning
Directed to the side; indirect, furtive, or not straightforward.
Example
She gave him a sidelong glance across the room.
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 ˌsensɪˈtɪvɪti

sensitivity

Meaning
The quality or condition of being sensitive; responsiveness to stimuli.
Example
Bose proved plant sensitivity through experiments.
A2 noun /ˌsɪtʃuˈeɪʃən/

Situation

Meaning
a set of circumstances in which one finds oneself; a state of affairs
Example
We need to assess the current situation before making any decisions.
C2 verb /ˈsʌbdʒʊˌɡeɪt/

subjugate

Meaning
To bring under domination or control, especially by conquest.
Example
The empire sought to subjugate the neighboring kingdoms.
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.
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.
B1 noun /skɑːrf/

Scarf

Meaning
a length of fabric worn around the neck or head for warmth, protection, or fashion
Example
She wrapped a warm scarf around her neck in the cold weather.
C2 adjective /ˈsiːmi/

seamy

Meaning
Morally degraded, unpleasant, or sordid.
Example
The novel reveals the seamy side of city life.
C1 verb /sɪˈsiːd/

secede

Meaning
To formally withdraw from a political or organizational union.
Example
Several states threatened to secede from the union.
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 noun /ˈsɛpərətɪst/

separatist

Meaning
A person who supports the separation of a group from a larger body, often for political or cultural independence.
Example
The separatist group demanded independence from the central government.
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 verb /ˈʃɪmər/

shimmer

Meaning
To shine with a soft, wavering light.
Example
The lake shimmered under the moonlight.
C1 noun ˈsʌs.tɪ.nəns

Sustenance

Meaning
Food or support necessary for sustaining life
Example
Water is essential for human sustenance.
B1 adjective /ˌstreɪt ˈfɔːr.wərd/

Straight forward

Meaning
honest and open; not complicated; easy to understand
Example
His explanation was very straightforward and easy to follow.
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 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.
C2 adjective /ˈsɒmnələnt/

somnolent

Meaning
Sleepy or drowsy; causing a desire to sleep.
Example
The somnolent lecture made half the class fall asleep.
C2 noun /ˈspuːnərɪzəm/

spoonerism

Meaning
A verbal error in which the initial sounds of words are swapped to create a humorous effect.
Example
He made a spoonerism by saying 'queer old dean' instead of 'dear old queen'.
C2 adjective /səˈdʒɛstəbəl/

suggestible

Meaning
easily influenced by the suggestions of others
Example
Children are highly suggestible and may believe what they are told.
B2 noun səˈsteɪnəbl dɪˈvɛləpmənt

Sustainable Development

Meaning
Development that meets present needs without compromising the ability of future generations to meet their own needs.
Example
Eco-tourism contributes to sustainable development in local communities.
B2 adjective /ˈʃeɪm.fəl/

Shameful

Meaning
causing shame; disgraceful; embarrassing
Example
His shameful behavior embarrassed the entire family.
C1 noun /ˈsʌnˌdaʊn/

sundown

Meaning
the time in the evening when the sun goes below the horizon
Example
We planned to reach the village before sundown.
B2 adjective /ˈsæv.ɪdʒ/

Savage

Meaning
extremely cruel or violent; wild and fierce; uncivilized
Example
The savage attack shocked everyone.
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 /sɪr/

seer

Meaning
A person who is supposed to be able to see what will happen in the future; a prophet.
Example
The seer predicted a great change in the kingdom.
B2 noun /ˈsleɪvəri/

slavery

Meaning
the system or state of being owned and forced to work for someone else
Example
Slavery was abolished in most countries in the 19th century.
B2 noun /ˈsɛktər/

sector

Meaning
a distinct part or area of an economy, society, or industry
Example
The technology sector is growing rapidly.
C1 noun/verb /ˈslʌmbər/

slumber

Meaning
A state of sleep; to sleep lightly or rest.
Example
The child slumbered peacefully through the night.
B2 noun /ˈskʌlp.tər/

Sculptor

Meaning
an artist who creates sculptures by carving, modeling, or shaping materials
Example
The sculptor spent months creating a beautiful marble statue.
C1 verb /sərˈmaʊnt/

surmount

Meaning
to overcome a difficulty or obstacle
Example
He surmounted all the challenges to achieve his dream.
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.
A2 verb /səkˈsiːd/

succeed

Meaning
to achieve the desired aim or result; to do well
Example
She worked hard to succeed in her career.
B2 noun/verb /ˈslɔː.tər/

slaughter

Meaning
the killing of animals for food; killing in large numbers violently
Example
The army slaughtered hundreds of enemy soldiers.
C1 verb /skrɔːl/

scrawl

Meaning
to write or draw something quickly and carelessly, making it hard to read
Example
He scrawled his signature at the bottom of the page.
B2 noun /ˌsɪm.ɪˈlær.ə.ti/

Similarity

Meaning
the quality or state of being similar; resemblance
Example
There is a striking similarity between the two paintings.
C2 verb /ˈsæŋktɪfaɪ/

sanctify

Meaning
to make holy or sacred; to purify
Example
The priest will sanctify the marriage ceremony.
B2 noun /stjuːˈpɪdəti/

stupidity

Meaning
lack of intelligence or common sense
Example
His stupidity caused a lot of problems for the team.
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 /skwɒt/

squat

Meaning
to crouch or sit with knees bent and body close to the ground
Example
He squatted down to tie his shoes.
A2 noun /suːt/

suit

Meaning
a set of clothes made of the same fabric, usually consisting of trousers and a jacket
Example
He wore a black suit to the wedding.
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 noun səˈlɪnɪti ɪnˈtruːʒən

salinity intrusion

Meaning
The movement of salt water into freshwater areas, typically affecting coastal regions.
Example
Salinity intrusion affects coastal regions.
A1 verb /ˈstʌdi/

study

Meaning
to learn about something; to examine carefully; to research
Example
I study mathematics every evening.
C2 adjective /ˌsɛm.iˈsɪv.ə.laɪzd/

semicivilized

Meaning
Partially civilized; having some aspects of civilization but not fully developed.
Example
The tribe was described as semicivilized by early explorers.
C1 adjective /ˈsɜːrvɪsəbl/

serviceable

Meaning
fit for use; usable; in working order
Example
The old bicycle is still serviceable despite its age.
C2 verb /ˈsʌli/

sully

Meaning
to damage the purity, integrity, or reputation of something
Example
The scandal sullied the politician’s reputation.
A2 noun /steɪdʒ/

stage

Meaning
a raised platform or area for performances or presentations
Example
The actor stepped onto the stage to deliver his speech.
C1 noun /ˈsəʊdiəm/

sodium

Meaning
a soft, silver-white chemical element that is highly reactive and found in salt.
Example
Sodium is an essential element for maintaining fluid balance in the body.
A1 noun /stɑːr/

Star

Meaning
a fixed luminous point in the night sky that produces light and heat through nuclear fusion
Example
Thousands of stars are visible in the clear night sky.
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.
A2 noun /ʃɛlf/

shelf

Meaning
a flat surface used for storing or displaying things, typically fixed to a wall or inside a cabinet
Example
I placed the books on the shelf next to the window.
C1 adjective /ˈstɛlər/

stellar

Meaning
Relating to stars; outstanding or excellent.
Example
She gave a stellar performance in the play.
C2 adjective /ˈstɒlɪd/

stolid

Meaning
Calm, dependable, and showing little emotion or animation.
Example
Despite the chaos around him, he remained stolid and composed.
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.
C2 adjective /sɪˈnɜːrdʒɪk/

synergic

Meaning
Working together in a cooperative and effective manner.
Example
The two departments have a synergic relationship that boosts productivity.
A2 noun /spuːn/

Spoon

Meaning
an implement consisting of a small, shallow bowl on a long handle, used for eating, stirring, and serving food
Example
He used a spoon to eat his soup.
B2 verb /səˈluːt/

salute

Meaning
to greet with respect; to honor
Example
The soldiers saluted their commanding officer.
C2 adjective /ˈsɑːdn/

sodden

Meaning
thoroughly soaked or saturated with liquid
Example
His clothes were sodden after the heavy rain.
B1 adjective /ʃeɪpt/

shaped

Meaning
having a particular form or appearance
Example
The sculpture was shaped like a human figure.
B1 noun/adjective /ˈstændɪŋ/

standing

Meaning
status, reputation, or position; also the act of being upright on the feet
Example
He has high standing in the community for his charity work.
B2 noun /sɪnˈserɪti/

Sincerity

Meaning
the quality of being free from pretense or deceit; honesty
Example
His sincerity in apologizing was evident to everyone.
B1 noun /swet/

Sweat

Meaning
moisture exuded through the pores of the skin, typically as a reaction to heat, physical exertion, fever, or fear
Example
After running for an hour, he was covered in sweat.
C1 adjective /ˈseɪlaɪn/

Saline

Meaning
containing salt; salty; relating to salt water
Example
The saline solution is used for medical treatments.
C2 adjective /ˈseɪpiənt/

sapient

Meaning
Wise, or appearing to be wise.
Example
The professor gave a sapient response to the complex question.
B2 noun /ˈskɛlɪtən/

skeleton

Meaning
The internal framework of bones that supports the body of a human or animal.
Example
The teacher showed the students a human skeleton in the biology class.
B2 noun /ˈsɛtlər/

settler

Meaning
a person who settles in a new area or land
Example
The settlers arrived in the new town and started building homes.
C1 noun /sloʊθ/

Sloth

Meaning
laziness; reluctance to work or make an effort
Example
His sloth prevented him from achieving his goals.
C1 verb /ˈʃrɪvəl/

shrivel

Meaning
To become dry, wrinkled, and smaller due to lack of moisture.
Example
The flowers shriveled under the hot sun.
C1 adjective /ˈsʌmp.tʃu.əs/

sumptuous

Meaning
Splendid and expensive-looking; luxurious.
Example
The guests were treated to a sumptuous banquet.
C2 adjective /saɪˈdɪəriəl/

sidereal

Meaning
Relating to the stars or constellations; measured relative to the stars.
Example
Astronomers use sidereal time to track the positions of stars.
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 adjective /ˈsæŋɡwɪn/

sanguine

Meaning
Optimistic or positive, especially in a difficult situation.
Example
Despite the challenges, she remained sanguine about the future.
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.
B2 adjective /ˈsɛkʃʊəl/

sexual

Meaning
relating to the instincts, physiological processes, and activities connected with physical attraction or intimate physical contact between individuals
Example
The sexual health of individuals is an important topic in modern medicine.
B2 noun /skɑːr/

Scar

Meaning
a mark left on the skin after a wound has healed; lasting emotional damage
Example
The accident left a permanent scar on his forehead.
B2 verb /soʊ/

sow

Meaning
to plant seeds in the ground; to scatter seeds for growing
Example
The farmer will sow wheat seeds in the field tomorrow.
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 adjective /suːˈpɜːr.flu.əs/

superfluous

Meaning
Unnecessary, especially through being more than enough.
Example
His speech contained too many superfluous details.
B1 verb /stæmp/

stamp

Meaning
To bring down (one's foot) heavily on the ground; to imprint a mark or seal.
Example
She stamped her foot in frustration.
B1 adjective /skɪld/

Skilled

Meaning
having or showing the knowledge, ability, or training to perform certain activities or work well
Example
He is a skilled carpenter who can build beautiful furniture.
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 /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.
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.
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.