six
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A1 noun /sɪks/

six

Meaning
the number 6
Example
There are six apples on the table.
B2 adjective /slæk/

slack

Meaning
not tight, firm, or busy; lacking tension or activity
Example
Business is slack during the rainy season.
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.
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.
C2 noun ˌsʌb.dʒʊˈɡeɪ.ʃən

subjugation

Meaning
The action of bringing someone or something under domination or control, especially by force.
Example
The subjugation of weaker nations by colonial powers shaped history.
B2 verb /sæk/

sack

Meaning
to dismiss from a job; to put something in a sack
Example
The company sacked him for poor performance.
B2 verb /sʌk/

suck

Meaning
to draw something into the mouth by using the lips and tongue
Example
The baby began to suck her thumb.
B2 verb /spɪn/

spin

Meaning
To turn around quickly or cause something to rotate
Example
The dancer began to spin gracefully on the stage.
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.
B1 verb /stiːl/

steal

Meaning
to take something without permission; to rob
Example
It's wrong to steal from others.
B2 noun /ˈsʌfərɪŋ/

suffering

Meaning
the state of undergoing pain, distress, or hardship
Example
They tried to relieve his suffering with medicine.
B2 adjective /ˈstɛdi/

steady

Meaning
firm, stable, and not likely to change suddenly
Example
He kept his hand steady while painting the picture.
C1 noun /ˈʃær.ən fruːt/

Sharon fruit

Meaning
a sweet orange persimmon fruit that can be eaten when firm
Example
The Sharon fruit is sweet and can be eaten like an apple.
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.
C2 verb /sleɪk/

slake

Meaning
To satisfy thirst or desire.
Example
She drank cold water to slake her thirst.
C1 noun /siˈɛrə klʌb/

Sierra Club

Meaning
An American environmental organization founded in 1892 by John Muir, focused on promoting conservation of the natural environment by influencing public policy decisions.
Example
John Muir founded the Sierra Club in 1892 to protect wild areas.
B1 noun /ˈseɪ.ɪŋ/

Saying

Meaning
a well-known phrase that expresses something true about life; a proverb
Example
There's an old saying that practice makes perfect.
B2 adjective ˈsɑːləm

solemn

Meaning
Formal and dignified; characterized by deep sincerity.
Example
The day begins with a solemn ceremony at the memorial.
B1 verb /straɪk/

Strike

Meaning
to hit forcefully; to stop work as a form of protest
Example
Lightning strikes the tall building during the storm.
A2 adjective /ˈsʌn.i/

Sunny

Meaning
bright with sunlight; cheerful and optimistic
Example
It's a beautiful sunny day perfect for a picnic.
A2 noun /staɪl/

Style

Meaning
a particular way of doing something; a distinctive appearance or manner of expression
Example
She has her own unique style of writing that captivates readers.
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 verb /ˈstɪntɪŋ/

stinting

Meaning
to supply sparingly or with restrictions
Example
He never stinting his efforts to help the poor.
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.
B2 noun /sɔːrd/

Sword

Meaning
a weapon with a long metal blade and a handle, used for fighting
Example
The knight drew his sword to defend the castle.
B1 adverb /sɪɡˈnɪfɪkəntli/

significantly

Meaning
in a way that is large or important enough to have an effect
Example
The economy has significantly improved over the last decade.
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.
B2 adjective /ˌsɪstəˈmætɪk/

systematic

Meaning
Done or acting according to a fixed plan or system; methodical.
Example
The company took a systematic approach to solving the issue.
C2 adjective /ˈsɑːdn/

sodden

Meaning
thoroughly soaked or saturated with liquid
Example
His clothes were sodden after the heavy rain.
C2 noun /ˈsɪnjuː/

sinew

Meaning
A tendon; figuratively, the source of strength, power, or resilience.
Example
The sinews in his arms stood out as he lifted the heavy box.
C2 noun /sɒmˈnæmbjʊlɪst/

somnambulist

Meaning
A person who sleepwalks.
Example
The somnambulist wandered out of the house at night.
B2 noun /ˈsɛm.iˌsɜːr.kəl/

semicircle

Meaning
Half of a circle or something shaped like half of a circle.
Example
The students sat in a semicircle around the teacher.
C2 adjective /sæŋˈɡwɪniəs/

sanguineous

Meaning
Relating to blood; bloody.
Example
The surgeon examined the sanguineous discharge from the wound.
C2 adjective /ˈskʌr.ɪ.ləs/

scurrilous

Meaning
Using or expressed in coarse, abusive, or slanderous language.
Example
The politician faced criticism for his scurrilous remarks about his opponent.
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.
C2 adjective /ˈseɪpiənt/

sapient

Meaning
Wise, or appearing to be wise.
Example
The professor gave a sapient response to the complex question.
C1 noun ˌskeɪ.ləˈbɪl.ə.ti

scalability

Meaning
The capacity to be changed in size or scale; the ability of a system to handle a growing amount of work.
Example
The new software offers high scalability for large enterprises.
C1 noun /ˈswɪndlɚ/

swindler

Meaning
a person who cheats or deceives others for money or gain
Example
The police finally caught the notorious swindler.
A2 noun /ˈsæd.nəs/

Sadness

Meaning
feeling of sorrow, unhappiness, or grief
Example
Her sadness was evident after hearing the bad news.
B2 noun /ˌsɛpəˈreɪʃən/

Separation

Meaning
the action or state of moving or being moved apart; the division of something into constituent or distinct elements
Example
The separation of the two countries was peaceful.
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.
C1 verb /səbˈvɜːrt/

subvert

Meaning
to undermine or overthrow an established system, authority, or institution
Example
The rebels tried to subvert the government.
B2 verb /swer/

swear

Meaning
to use offensive language; to promise solemnly; to take an oath
Example
I swear to tell the truth.
B2 adverb /ˈsoʊlli/

solely

Meaning
only; not involving anyone or anything else
Example
He is solely responsible for the decision.
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 adjective /ˈsɛnʃuəl/

sensual

Meaning
Relating to or involving gratification of the senses and physical pleasure.
Example
The painting had a sensual quality that captivated viewers.
B2 noun /ˌsɛlf rɪˈspɛkt/

self-respect

Meaning
A feeling of pride and confidence in oneself; self-worth.
Example
She refused to compromise her self-respect by accepting unfair treatment.
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.
B2 noun /sɪmˈplɪsɪti/

Simplicity

Meaning
the quality of being simple; lack of complexity or intricacy
Example
The beauty of the design lies in its simplicity.
C2 adjective /ˌsʌb.əˈkwɒt.ɪk/

subaquatic

Meaning
Existing, living, or located under water.
Example
Divers explored the subaquatic cave system filled with rare fish.
C1 adjective /ˈsæŋɡwɪn/

sanguine

Meaning
Optimistic or positive, especially in a difficult situation.
Example
Despite the challenges, she remained sanguine about the future.
C1 adjective /ˈsʌlən/

sullen

Meaning
bad-tempered and gloomy; silently resentful
Example
She gave him a sullen look and walked away.
C2 adjective /ˌsuːprəˈmʌndeɪn/

supramundane

Meaning
beyond the physical or ordinary world; transcendent
Example
The monk spoke of supramundane peace beyond material life.
B2 noun /ˈsɪɡ.nə.tʃər/

Signature

Meaning
a person's name written in their own handwriting as identification or authorization
Example
Please put your signature at the bottom of the document.
C2 noun /ʃiːt fɪʃ/

Sheat-fish

Meaning
A large freshwater catfish with a broad flat head and long barbels
Example
The sheat-fish is one of the largest freshwater fish in South Asia.
C1 noun /ˈstjuːpər/

stupor

Meaning
a state of near-unconsciousness or insensibility
Example
He remained in a stupor after hearing the shocking news.
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 /skwɔːl/

squall

Meaning
a sudden violent gust of wind, often accompanied by rain, snow, or sleet
Example
A sudden squall caught the sailors off guard.
B2 noun /ˈsliːpər/

sleeper

Meaning
a person or thing that sleeps; something that unexpectedly succeeds
Example
The movie turned out to be a real sleeper hit.
C2 adjective, noun /səbˈmɜːrsəbl/

submersible

Meaning
capable of being submerged; a small underwater craft
Example
The scientists explored the deep ocean using a submersible.
C1 verb /sʌlk/

sulk

Meaning
to be silent and bad-tempered because you are angry or disappointed
Example
She sulked in her room after the argument.
B2 noun /ˈsɪblɪŋ/

sibling

Meaning
A brother or sister.
Example
She has three siblings, two brothers and one sister.
B1 adjective /spəˈsɪfɪk/

specific

Meaning
Clearly defined or identified; particular; exact.
Example
Make a specific plan to beat procrastination.
B2 verb /stɪŋ/

sting

Meaning
to pierce with a sharp point; to cause sharp pain
Example
The bee stung him on his arm while he was gardening.
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.
A2 proper noun /ˌsaʊθ əˈmɛrɪkə/

south america

Meaning
a continent located in the Western Hemisphere, mostly in the Southern Hemisphere
Example
Brazil is the largest country in South America.
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.
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.
B2 noun /ˈsɛsəmi sidz/

Sesame Seeds

Meaning
small edible seeds from the sesame plant used in cooking and baking
Example
Sprinkle sesame seeds on top of the bread before baking.
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.
C2 adjective /ˈsæ.loʊ/

sallow

Meaning
Of an unhealthy yellow or pale brown color, often referring to skin.
Example
His sallow complexion made him look tired and sickly.
C1 adjective /ʃrɪl/

shrill

Meaning
High-pitched and piercing in sound.
Example
The shrill whistle startled everyone in the room.
A2 noun /streŋθ/

Strength

Meaning
the quality or state of being physically strong; power or force
Example
Regular exercise helps build muscle strength.
B2 noun /ˈstrʌk.tʃərz/

structures

Meaning
Buildings or other objects constructed from several parts.
Example
The region has ancient structures.
C2 noun /sfɪˈrɒmɪtər/

spherometer

Meaning
An instrument used for measuring the curvature of spherical surfaces.
Example
The scientist used a spherometer to measure the lens curvature.
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.
B2 noun /ˈsiː.krə.si/

Secrecy

Meaning
the practice of keeping something secret; the state of being kept hidden
Example
The project was conducted in complete secrecy.
C1 adjective /ˈstʌm.pi/

Stumpy

Meaning
short and thick; having a short, thick appearance
Example
The stumpy little dog wagged its tail enthusiastically.
B2 verb /ˈstrʌɡlɪŋ/

struggling

Meaning
Making forceful or violent efforts to get free of restraint or constriction; having difficulty achieving something.
Example
Many regions are struggling with economic recovery.
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.
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

Meaning
secretly, in confidence, or in private
Example
The deal was made sub rosa to avoid public scrutiny.
B2 noun /ˈspɔːrtsmən/

sportsman

Meaning
A person who is skilled in sports or enjoys participating in athletic activities.
Example
He is a true sportsman, always fair and respectful to his opponents.
B2 noun /ˈstɑːrt.ʌp/

startup

Meaning
A newly established business, especially a small technology or business company that is just beginning operations.
Example
The startup secured funding from investors.
C2 noun /ˈʃɪbəˌlɛθ/

shibboleth

Meaning
A custom, phrase, or belief distinguishing a particular group of people, often used to identify outsiders.
Example
The phrase became a political shibboleth during the campaign.
A1 noun /ˈsætərdeɪ/

saturday

Meaning
The day of the week between Friday and Sunday; traditionally the sixth day of the week
Example
We are going to the beach on Saturday.
B1 noun /ʃɔːr/

Shore

Meaning
the land along the edge of a sea, lake, or other body of water
Example
We walked along the shore collecting seashells.
A2 adjective /ˈsɪli/

Silly

Meaning
foolish; lacking good sense or judgement
Example
Don't be silly, of course you can do it!
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.
B2 adjective /ˈspɒtɪd/

Spotted

Meaning
having spots or marks; noticed or seen
Example
The spotted leopard moved silently through the jungle.
B1 adjective /ʃɛrd/

shared

Meaning
used, done, or experienced by two or more people together
Example
They live in a shared apartment near the university.
B2 adjective /ʃɪər/

Sheer

Meaning
complete; absolute; transparent; very steep
Example
It was sheer luck that we found the place.
B2 adjective sɪnˈθet̬.ɪk

synthetic

Meaning
Made by chemical synthesis, especially to imitate a natural product; artificial.
Example
Synthetic chemicals are used in processed foods.
B2 verb /siːz/

seize

Meaning
To take hold of suddenly and forcibly.
Example
The police managed to seize the stolen goods.
C2 verb /ˌsuːpərˈhiːt/

superheat

Meaning
to heat a substance beyond its normal boiling point without it becoming vapor
Example
Engineers superheat the steam to increase the efficiency of the turbine.
A2 noun, verb /ˈsɛntəns/

sentence

Meaning
A set of words that expresses a complete thought; or a punishment given by a court of law.
Example
The judge gave him a five-year prison sentence.
A2 noun /sɛlf/

self

Meaning
a person's essential being that distinguishes them from others, especially considered as the object of introspection or reflexive action
Example
She has a strong sense of self.
A2 adjective /ˈʃaɪ.ni/

Shiny

Meaning
reflecting light; bright and polished; glossy
Example
The shiny new car caught everyone's attention.
B2 verb /ˈʃʌfəl/

shuffle

Meaning
to walk by dragging one's feet along or without lifting them fully; to mix or rearrange
Example
He shuffled the cards before dealing them.
A2 verb /ʃeɪk/

shake

Meaning
to move quickly back and forth; to tremble
Example
The earthquake made the building shake.
B2 verb /spɛər/

spare

Meaning
To give something that one has extra of; to refrain from harming or killing.
Example
Could you spare me a few minutes of your time?
C2 noun /ˈsuːθˌseɪər/

soothsayer

Meaning
a person who claims to predict the future
Example
The king consulted a soothsayer before going to war.
A1 noun /suːp/

Soup

Meaning
a liquid food made by boiling meat, vegetables, or other ingredients in water
Example
I had a bowl of chicken soup for lunch.
A2 noun səˈsaɪəti

society

Meaning
The aggregate of people living together in a more or less ordered community.
Example
Society plays a pivotal role in shaping an individual's values.
A2 noun /soʊp/

Soap

Meaning
a cleaning agent made from fats or oils and used for washing
Example
Please wash your hands with soap and water.
B1 noun /ˈseɪ.lər/

Sailor

Meaning
a person who works on a ship or boat; a member of a navy
Example
The experienced sailor navigated the ship through the storm.
B1 noun /seɪnt/

Saint

Meaning
person recognized as holy or virtuous; very kind or patient person
Example
Mother Teresa was declared a saint by the Catholic Church.
C2 verb, adjective /ˈstraɪeɪt/

striate

Meaning
to mark with stripes or grooves; striped or streaked in appearance
Example
The rock surface was striated by glacial movement.
C1 adjective /sɑːrˈdɒnɪk/

sardonic

Meaning
Grimly mocking or cynical.
Example
She gave him a sardonic smile after hearing his excuse.
B1 noun /striːm/

stream

Meaning
A small, narrow river; a continuous flow of something.
Example
The stream of life is unstoppable.
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.
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.
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, verb /slɜːr/

slur

Meaning
An insulting remark or suggestion; or to speak indistinctly.
Example
He made a slur against her character.
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.
C2 adjective /sɪˈbeɪʃəs/

sebaceous

Meaning
Relating to or secreting sebum, an oily substance from the skin.
Example
Acne is often caused by overactive sebaceous glands.
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.
B2 adjective strəˈtiː.dʒɪk

strategic

Meaning
Relating to the identification of long-term or overall aims and interests and the means of achieving them.
Example
Strategic policies enhance competitiveness.
B1 noun /ˈsɛkʃən/

section

Meaning
a distinct part or subdivision of something larger
Example
This section of the report needs further review.
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.
C2 noun /ˈsaʊər wʊd ˈæp.əl/

Sour wood apple

Meaning
a tropical fruit with hard shell and tangy flesh; elephant apple
Example
The sour wood apple has a unique taste that many people enjoy.
A1 noun /ˈsʌn.deɪ/

sunday

Meaning
The day of the week between Saturday and Monday; often considered a day of rest or worship.
Example
We usually relax at home on Sunday.