serendipitous
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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.
C2 adjective /svelt/

svelte

Meaning
Attractively thin, graceful, and elegant in appearance or movement.
Example
She looked svelte in the elegant black dress.
B1 noun /ˈspiːʃiːz/

Species

Meaning
a group of living organisms that can reproduce with each other; a type or kind
Example
The Amazon rainforest is home to thousands of animal species.
B1 noun /sɛks/

sex

Meaning
the biological distinction between male and female; sexual activity
Example
He was asked about his sex at the doctor's office.
B2 noun /ˈskɒl.ər/

Scholar

Meaning
a person who has studied a subject for a long time and knows a lot about it; an academic
Example
The renowned scholar published several books on ancient history.
B1 verb /skriːm/

scream

Meaning
to make a loud, high-pitched sound, usually because of fear, pain, or excitement
Example
She screamed when she saw the spider.
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 noun /ˈsækrɪlɪdʒ/

sacrilege

Meaning
Violation or misuse of what is regarded as sacred.
Example
Stealing from the temple was considered an act of sacrilege.
B1 noun /ˌsaʊθˈiːst/

southeast

Meaning
the direction that is between south and east; a region in that direction
Example
The city is located in the southeast of the country.
C1 verb /ˌsuːpərˈsiːd/

supersede

Meaning
To replace or take the place of something because it is more modern or effective.
Example
This new law will supersede the old regulations.
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.
C2 verb /ˌsuːpərˈæd/

superadd

Meaning
to add something to what has already been added
Example
The author chose to superadd a new chapter to the revised edition.
B1 noun ˈstrʌk.tʃər

structure

Meaning
The arrangement of and relations between the parts or elements of something complex.
Example
The structure is designed for safety and functionality.
B2 adjective /slaɪ/

sly

Meaning
Clever in a deceitful or cunning way.
Example
She gave him a sly smile.
A1 noun /ˈsɪstər/

sister

Meaning
a female sibling; a girl or woman in relation to other children of her parents
Example
My sister is coming to visit us next week.
C2 noun /ˈspɒt.ɪd sneɪk hed/

Spotted snake head

Meaning
a type of freshwater fish with spotted markings and an elongated head resembling a snake
Example
The spotted snake head is a popular fish for aquaculture in South Asia.
B2 noun /ˈʃɔːrt.kʌm.ɪŋ/

Shortcoming

Meaning
a fault or failure to meet a certain standard; a deficiency
Example
Despite his many talents, he has some shortcomings.
C1 noun /səˈvænə/

savanna

Meaning
a grassy plain with scattered trees, typical of tropical and subtropical regions
Example
Giraffes browsed on acacia trees across the wide savanna.
A2 adjective /ˈsep.ər.ət/

Separate

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

suppose

Meaning
to assume or believe something is true without proof
Example
I suppose she will be here soon.
C1 noun ˈsɛlfləsnɪs

selflessness

Meaning
The quality of being concerned more with the needs of others than with one's own.
Example
Selflessness is a key value for community building.
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.
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.
B2 verb /ˈstrɛŋkθən/

strengthen

Meaning
To make or become stronger.
Example
Communication can strengthen bonds between people.
B2 adjective /ˈstʌdid/

studied

Meaning
carefully considered, deliberate, or planned
Example
Her response was calm and studied, not impulsive.
C2 noun /slaɪt/

sleight

Meaning
Skill or dexterity, especially in performing tricks.
Example
The magician amazed the crowd with his sleight of hand.
C1 verb /snɪər/

sneer

Meaning
to smile or speak in a mocking or contemptuous way
Example
She sneered at his attempt to sing.
B2 verb /ʃʌv/

shove

Meaning
to push someone or something roughly
Example
He shoved the box into the corner.
B2 adjective /ˈsiː.z ə n.əl/

Seasonal

Meaning
relating to or occurring in a particular season; changing according to the seasons
Example
Many businesses hire seasonal workers during the holidays.
B2 verb /smæʃ/

smash

Meaning
to break something into pieces violently
Example
She smashed the glass in frustration.
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.
B2 noun /ˈspætʃ.ʊ.lə/

Spatula

Meaning
a kitchen utensil with a flat, flexible blade used for mixing, spreading, or lifting food
Example
I used a spatula to flip the pancakes in the pan.
A1 noun/adjective /saʊθ/

south

Meaning
the direction towards the bottom of a map, opposite to north
Example
The sun rises in the east and sets in the south.
B2 noun /ˌsɛlf ɪˈstiːm/

self-esteem

Meaning
confidence in one's own worth or abilities; self-respect
Example
Building self-esteem takes time and consistent effort.
A2 noun /stɛps/

steps

Meaning
A measure or action, especially one of a series taken in order to deal with or achieve a particular thing.
Example
Taking small steps reduces overwhelm.
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.
B2 noun /stəˈbɪl.ə.ti/

Stability

Meaning
the state of being stable; firmness; steadiness
Example
Political stability is essential for economic growth.
C1 verb /ˈstɪntɪŋ/

stinting

Meaning
to supply sparingly or with restrictions
Example
He never stinting his efforts to help the poor.
A2 verb /stɪk/

stick

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

stupidity

Meaning
lack of intelligence or common sense
Example
His stupidity caused a lot of problems for the team.
B2 noun /sɜːˈveɪ.ləns/

surveillance

Meaning
Close observation, especially of a suspected spy or criminal; continuous watching of a place, person, or situation.
Example
Government agencies conduct surveillance on cyber threats.
C2 noun /ˈstiː.vəˌdɔːr/

stevedore

Meaning
A person employed to load and unload cargo from ships.
Example
The stevedores worked tirelessly to unload the cargo before dawn.
C1 adjective /səˈriːn/

serene

Meaning
Calm, peaceful, and untroubled; tranquil.
Example
The lake had a serene and peaceful atmosphere.
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 /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.
C2 noun /ˈʃɑːdənfrɔɪdə/

schadenfreude

Meaning
pleasure derived from another person's misfortune
Example
He felt a sense of schadenfreude when his rival failed.
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.
B1 noun /sɔːrs/

Source

Meaning
a place, person, or thing from which something originates; the origin of information
Example
The river's source is high in the mountains.
B2 noun /ˈstæm.ɪ.nə/

Stamina

Meaning
the ability to sustain prolonged physical or mental effort
Example
Marathon runners need great stamina to complete the race.
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.
C2 verb /ʃiːð/

sheathe

Meaning
to put a sword or knife back into its cover
Example
He quickly sheathed his sword after the duel.
B2 adjective /skeərs/

Scarce

Meaning
rare; not easily found; existing in small quantities
Example
Fresh water is becoming increasingly scarce in desert regions.
A2 modal verb /ʃæl/

shall

Meaning
used to express the future or indicate an intention or determination
Example
I shall return before sunset.
C1 noun /səˈlɪn.ə.t̬i/

salinity

Meaning
The salt content of soil or water, typically measured as a concentration.
Example
The salinity of the ocean varies depending on depth and location.
A2 noun /ʃiːp/

sheep

Meaning
a farm animal with thick wool that is raised for its wool, meat, and milk
Example
The farmer keeps a large flock of sheep.
B2 noun/verb /ˈsoʊ.ɪŋ/

sewing

Meaning
The activity or skill of joining fabric using a needle and thread
Example
She enjoys sewing her own clothes on weekends.
B1 noun /ˈstʌmək eɪk/

stomach ache

Meaning
Pain in the stomach or abdominal area
Example
I have a stomach ache after eating too much.
C2 adjective /sæŋˈɡwɪniəs/

sanguineous

Meaning
Relating to blood; bloody.
Example
The surgeon examined the sanguineous discharge from the wound.
C1 verb /ʃʌnt/

shunt

Meaning
to move or turn aside; to push or divert from one track to another
Example
The train was shunted onto a different track.
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 /səˈlɪləkwi/

soliloquy

Meaning
a speech in which a character talks to themselves, often used in drama to reveal inner thoughts
Example
Hamlet's soliloquy is one of the most famous passages in Shakespearean drama.
C1 verb /strʌt/

strut

Meaning
to walk with a stiff, proud, and confident gait, often to show off
Example
He strutted across the stage after winning the award.
B2 noun /ˈʃəʊ.keɪs/

showcase

Meaning
A display case or exhibition; to present something in an attractive or favorable way.
Example
The exhibition showcased the artist's best works.
A1 verb /seɪ/

say

Meaning
to speak words; to express something in words
Example
She said hello to me.
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.
C2 noun /ˈsʌfrədʒɪst/

suffragist

Meaning
a person advocating the extension of suffrage, especially to women
Example
The suffragists organized rallies to demand voting rights for women.
C2 noun /ˈsuːθˌseɪər/

soothsayer

Meaning
a person who claims to predict the future
Example
The king consulted a soothsayer before going to war.
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.
B1 verb /spaɪ/

spy

Meaning
to secretly collect information about a person, group, or country
Example
He was caught spying on his neighbor through the window.
C2 adjective /ˈsɪbɪlənt/

sibilant

Meaning
Making or characterized by a hissing sound.
Example
The word 'snake' starts with a sibilant sound.
B1 noun /ˈspæroʊ/

Sparrow

Meaning
small brown and grey bird commonly found in cities and towns
Example
The sparrow chirped cheerfully from the tree branch.
C2 noun /ˌsɪŋ.krəˈnɪs.ɪ.ti/

synchronicity

Meaning
The meaningful coincidence of two or more events that are not planned.
Example
The synchronicity of their thoughts amazed everyone.
C2 noun /ˈsɪnəd/

synod

Meaning
An assembly of the clergy in a Christian church convened to decide on issues of doctrine or administration.
Example
The synod gathered to discuss reforms in the church.
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.
C2 adjective /ˈspaɪnəs/

spinous

Meaning
Having spines or thorn-like projections
Example
The spinous cactus was difficult to handle without gloves.
C1 noun /sɔɪl ˈmæn.ɪdʒ.mənt/

soil management

Meaning
The application of operations, practices, and treatments to protect soil and enhance its performance.
Example
Proper soil management improves long-term agricultural productivity.
A2 noun /skɜːrt/

Skirt

Meaning
a garment that hangs from the waist and covers part or all of the legs
Example
She chose a blue skirt to match her blouse.
B2 noun /ˈsɪblɪŋ/

sibling

Meaning
A brother or sister.
Example
She has three siblings, two brothers and one sister.
C1 adjective /ˈstɔːlwərt/

stalwart

Meaning
Loyal, reliable, and hardworking; strongly built or sturdy.
Example
She has always been a stalwart supporter of the community.
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 /ˌsuːpərˈnuːmərɛri/

supernumerary

Meaning
Exceeding the usual number; extra or unnecessary.
Example
The play included several supernumerary actors to fill the background scenes.
B2 noun /stɔːrk/

Stork

Meaning
large wading bird with long legs and a long neck
Example
The stork built its nest on top of the tall chimney.
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.
B1 noun /swɒn/

Swan

Meaning
a large waterbird with a long curved neck and usually white plumage
Example
The elegant swan glided silently across the water.
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 /ˈsɛnʃənt/

sentient

Meaning
Able to perceive or feel things.
Example
Humans are sentient beings capable of reasoning.
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

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

swarm

Meaning
A large group of insects or people moving together.
Example
A swarm of bees surrounded the tree.
B2 noun, verb /slænt/

slant

Meaning
A particular point of view; to slope or lean in a particular direction.
Example
The article had a political slant.
B2 verb /spɪn/

spin

Meaning
To turn around quickly or cause something to rotate
Example
The dancer began to spin gracefully on the stage.
A2 noun /saɪz/

size

Meaning
the physical dimensions, proportions, or magnitude of something
Example
This shirt is too small in size for me.
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 /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 /ˈspɛərɪŋ/

sparing

Meaning
Using or giving only a little of something; economical.
Example
She is sparing in her use of words.
B1 noun /ˈʃoʊldər/

Shoulder

Meaning
the part of the body between the neck and the arm
Example
He carried the bag over his shoulder.
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.
C2 noun /ˈseɪ.ɡoʊ/

Sago

Meaning
starchy foodstuff obtained from the pith of various tropical palm stems
Example
She prepared sago pudding for dessert.
B2 verb /ˈspɛkjʊˌleɪt/

speculate

Meaning
To form a theory or guess without firm evidence; to invest in stocks, property, etc. hoping for profit.
Example
Experts speculate that the company may expand into new markets.
C2 noun /ʃiːf/

sheaf

Meaning
a bundle of grain stalks laid lengthwise and tied together after reaping; a bundle of objects tied together
Example
The farmer carried a sheaf of wheat on his shoulder.
B2 adjective /ˈstɜːrdi/

sturdy

Meaning
strongly and solidly built; not easily weakened
Example
The carpenter made a sturdy wooden table.
C1 adjective /sɔɪld/

soiled

Meaning
dirty or stained; not clean
Example
His clothes were soiled after playing in the mud.
B2 adjective /senˈseɪʃənəl/

Sensational

Meaning
causing great excitement or shock; extremely impressive
Example
The sensational performance left the audience speechless.
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 /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.
B2 adjective /ˈsʌt.əl/

subtle

Meaning
So delicate or precise as to be difficult to analyze or describe; making use of clever and indirect methods.
Example
The artist's use of color was subtle yet powerful.
C1 adjective /ˈswoʊlən/

swollen

Meaning
Enlarged or puffed up, usually due to injury, inflammation, or fluid accumulation
Example
Her ankle was swollen after she twisted it during the hike.
C1 noun ˌsɪstəˈmætɪk ˈseɪvɪŋz

systematic savings

Meaning
A structured and organized approach to regularly saving money according to a planned schedule
Example
Systematic savings can mitigate financial crises in old age.
B2 adjective /self səˈfɪʃənt/

Self-sufficient

Meaning
able to provide for oneself without depending on others
Example
The farm is completely self-sufficient in producing vegetables.
B2 noun/verb /ˈsɜːveɪ/

survey

Meaning
noun: an examination or inspection; verb: to examine or measure (an area or subject)
Example
They conducted a survey to understand customer preferences.
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 /ˈstrɛnjuəs/

strenuous

Meaning
Requiring or using great effort and energy.
Example
Climbing the mountain was a strenuous task.
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.
C2 noun /strəˈmoʊ.ni.əm ˌflaʊ.ər/

Stramonium flower

Meaning
A trumpet-shaped white or purple flower from the jimsonweed plant, known for its toxic properties
Example
The stramonium flower blooms at night with a sweet fragrance.
B1 noun /ˈsɛt ʌp/

set-up

Meaning
The arrangement or organization of something; a planned structure or scheme
Example
The company presented a new set-up for the office layout.
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.
B1 adjective /səˈpəʊzd/

supposed

Meaning
generally believed or assumed, but not necessarily true
Example
This is the supposed solution to the problem.
C1 noun/verb /snɛər/

snare

Meaning
a trap for catching animals; to catch or trap
Example
The hunter set a snare to catch rabbits.
C1 verb /ˈswɛltər/

swelter

Meaning
to suffer from intense heat
Example
We began to swelter in the midday sun.
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/verb /swɑːmp/

swamp

Meaning
An area of low-lying, uncultivated ground where water collects; a bog or marsh.
Example
The village was built near a swamp.