scientific
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B1 adjective ˌsaɪənˈtɪfɪk

scientific

Meaning
Based on or characterized by the methods and principles of science.
Example
Scientific discoveries continue to shape our understanding of the world.
C2 adjective /ˈsɑːdn/

sodden

Meaning
thoroughly soaked or saturated with liquid
Example
His clothes were sodden after the heavy rain.
C1 verb /sɪˈkluːd/

seclude

Meaning
To keep someone away from other people; to isolate.
Example
The monk chose to seclude himself in the mountains.
C1 noun /ˈsɛvərəns/

severance

Meaning
the act of ending something, especially a relationship or employment; compensation paid upon termination
Example
The company offered him severance pay after his job ended.
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.
B2 adverb /ˈsiː.krət.li/

secretly

Meaning
in a way that is hidden or not known by others
Example
She secretly planned a surprise party for her friend.
B2 adjective sɪˈvɪər

severe

Meaning
Very great; intense or extreme in degree.
Example
Without action, climate change impacts will become severe.
A1 adjective /stɪl/

still

Meaning
not moving or making a sound
Example
The water was still, reflecting the sky.
B2 noun /ˈsuːpəvaɪzə(r)/

supervisor

Meaning
a person who manages or directs the work of others
Example
The supervisor checked the progress of each employee.
C2 adjective /ˌsɒfəˈmɒrɪk/

sophomoric

Meaning
showing immaturity and overconfidence, like a sophomore
Example
His sophomoric behavior embarrassed his friends.
C2 adjective /sɪˈlæbɪk/

syllabic

Meaning
Relating to or based on syllables.
Example
The teacher explained the syllabic structure of the word.
A1 verb /spend/

spend

Meaning
to use money to buy something; to pass time
Example
I spend too much money on books.
C1 noun /ˌsæl.ɪ.naɪˈzeɪ.ʃən/

salinization

Meaning
The process of increasing salt content in soil.
Example
Excessive irrigation can cause salinization of farmland.
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.
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
B2 adjective /səˈraʊndɪŋ/

surrounding

Meaning
located all around a particular place or thing; nearby
Example
The surrounding hills were covered in mist.
C1 noun /ˈskaɪ.lɑːrk/

Sky-Lark

Meaning
a small brown bird known for singing while flying high in the sky
Example
The skylark sang beautifully as it soared above the meadow.
C1 adjective ˈsɪŋ.krə.nəs

synchronous

Meaning
Existing or occurring at the same time.
Example
Synchronous learning involves live online classes.
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.
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.
C1 noun /ˌsæbəˈtɜːr/

saboteur

Meaning
A person who engages in sabotage.
Example
The saboteur was arrested before he could plant the bomb.
B2 noun /ˌstɪm.jəˈleɪ.ʃən/

stimulation

Meaning
The action of arousing interest, enthusiasm, or excitement.
Example
Stimulation reduces stress and aids relaxation.
A2 noun, verb /ʃɒt/

shot

Meaning
a single attempt to hit something, usually with a weapon or a ball
Example
He took a shot at the goal.
B2 noun /ˈsɪləbəs/

syllabus

Meaning
An outline or summary of topics to be covered in a course of study.
Example
The professor handed out the syllabus on the first day of class.
C2 adjective /ˈsɪbɪlaɪn/

sibylline

Meaning
Prophetic, mysterious, or cryptic in meaning.
Example
The old woman gave a sibylline warning about the future.
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
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.
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 adjective /sɑːrˈkæstɪk/

sarcastic

Meaning
Using irony or mockery to convey contempt or humor.
Example
She made a sarcastic remark about his cooking.
C1 adjective /ˈskrɪptʃərəl/

scriptural

Meaning
Relating to or contained in the scriptures or holy writings.
Example
The priest gave a scriptural reference during the sermon.
C2 noun /ˈskɜː.vi/

scurvy

Meaning
A disease caused by a deficiency of vitamin C, leading to weakness, gum disease, and bleeding.
Example
Sailors often suffered from scurvy during long sea voyages without fresh fruits.
C1 verb /səˈplænt/

supplant

Meaning
To take the place of something or someone, often by force or strategy.
Example
Digital platforms have supplanted traditional newspapers.
A2 noun /ˈstændərd/

standard

Meaning
a level of quality or achievement, or a measure of comparison
Example
This car meets all the safety standards.
A2 noun /saɪz/

size

Meaning
the physical dimensions, proportions, or magnitude of something
Example
This shirt is too small in size for me.
B2 adjective /ˈsoʊlər/

solar

Meaning
Relating to or determined by the sun
Example
The house is powered by solar energy.
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 verb /spɪl/

spill

Meaning
to cause liquid to flow or fall out of a container by accident
Example
Be careful not to spill your coffee.
C1 adjective /skænt/

Scant

Meaning
barely sufficient; inadequate; small in amount
Example
There was scant evidence to support his claim.
C1 adjective /ˈspɛərɪŋ/

sparing

Meaning
Using or giving only a little of something; economical.
Example
She is sparing in her use of words.
C2 noun /ˈsoʊbrɪˌkeɪ/

sobriquet

Meaning
a person's nickname or descriptive name
Example
The famous leader was known by the sobriquet 'The Iron Lady'.
B2 adjective /ˈstæt.ɪk/

static

Meaning
Lacking in movement, action, or change; stationary.
Example
Static ideas hinder progress.
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 adverb /sɪˈvɪərli/

severely

Meaning
to a great degree; very seriously or harshly
Example
The patient was severely injured in the accident.
A1 adjective /ʃʊr/

Sure

Meaning
completely confident that something is true; certain; definitely true
Example
I am sure that he will come tomorrow.
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 adverb /səˈfɪʃəntli/

sufficiently

Meaning
to an adequate degree or extent
Example
She studied sufficiently to pass the exam.
A2 noun /ˈsiː.nər.i/

Scenery

Meaning
the natural features of a landscape; the painted background used on a theater stage
Example
The mountain scenery was breathtakingly beautiful.
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 /ˌsuːpərɪmˈpoʊz/

superimpose

Meaning
to place one thing on top of another so that both can be seen
Example
The editor superimposed text over the image.
C1 noun /ˈseɪ.tən/

Satan

Meaning
the chief evil spirit; the Devil in Christian and Islamic belief
Example
According to religious texts, Satan tempts people to sin.
B2 adjective /stɜːrn/

Stern

Meaning
serious and demanding exact conformity to rules; strict and severe
Example
The teacher gave the students a stern warning about cheating.
C1 adjective /ˈseɪ.vər.i/

savory

Meaning
Having a pleasant salty or spicy taste; morally acceptable.
Example
The restaurant serves a variety of savory dishes.
A2 noun /stres/

stress

Meaning
Physical, mental, or emotional strain or tension.
Example
Excessive stress can lead to health issues.
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 verb /sniːk/

sneak

Meaning
to move quietly and secretly to avoid being noticed
Example
He tried to sneak into the house without waking anyone.
B1 adjective /ˈsɪniər/

senior

Meaning
having a higher rank or status; older or more experienced
Example
He is the senior manager in the department.
B2 noun /ˈsɑːrˌkæzəm/

sarcasm

Meaning
The use of irony to mock or convey contempt.
Example
His sarcasm often made people laugh but sometimes offended them.
C1 adjective /ˈskrɔːni/

scrawny

Meaning
very thin and bony, often looking unhealthy
Example
The scrawny boy could barely lift the heavy bag.
B2 adjective /ˈstuː.di.əs/

Studious

Meaning
characterized by diligent study; devoted to learning
Example
She is a studious student who spends hours in the library.
B1 noun /ʃel/

Shell

Meaning
hard outer covering of an animal; explosive projectile for a gun
Example
The artillery fired a shell at the enemy position.
C2 verb /sɛkˈstuːpəl/

sextuple

Meaning
to make or become six times as great or as many
Example
Within two quarters, the campaign sextupled their daily sign-ups.
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 ˈsækrɪfaɪs

sacrifice

Meaning
An act of giving up something valued for the sake of something else.
Example
The country was freed due to the sacrifice of the warriors.
C2 verb /ˈstʌltɪfaɪ/

stultify

Meaning
to make someone or something appear foolish, or to hinder effectiveness and enthusiasm
Example
The repetitive tasks seemed to stultify the workers' creativity.
C1 adjective /ˈsɪnləs/

Sinless

Meaning
free from sin; pure and innocent; without moral fault
Example
The innocent child appeared sinless in her pure white dress.
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.
A2 adjective /streɪt/

Straight

Meaning
extending or moving uniformly in one direction; not curved or bent; honest
Example
Draw a straight line from point A to point B.
A2 verb /swɪm/

swim

Meaning
to move through water using body movements
Example
I love to swim in the ocean during summer.
B2 verb /ˈskætər/

scatter

Meaning
to spread or throw around in different directions
Example
The wind scattered the leaves across the yard.
B1 noun /ˈsaɪdˌwɔːk/

sidewalk

Meaning
a paved path for pedestrians at the side of a street.
Example
Children were playing on the sidewalk.
C1 noun /straɪf/

strife

Meaning
angry or violent conflict; struggle or discord
Example
The region has been torn apart by political strife.
C2 adjective /ˈspaɪnəs/

spinous

Meaning
Having spines or thorn-like projections
Example
The spinous cactus was difficult to handle without gloves.
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.
B2 verb /skɪm/

skim

Meaning
to move quickly over a surface or to read something quickly
Example
She skimmed through the report before the meeting.
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.
C1 adjective /ˈsʌmp.tʃu.əs/

sumptuous

Meaning
Splendid and expensive-looking; luxurious.
Example
The guests were treated to a sumptuous banquet.
B2 noun /ˈseɡ.mənt/

Segment

Meaning
each of the parts into which something is divided; a section or portion
Example
The orange was divided into eight segments.
C2 noun /ˈskæb.ərd/

scabbard

Meaning
A sheath for the blade of a sword or dagger, typically made of leather or metal.
Example
The knight drew his sword from the scabbard.
A2 noun /ʃɔːrts/

shorts

Meaning
a short garment worn on the lower half of the body that covers each leg separately, usually above the knees.
Example
He wore a pair of blue shorts to the beach.
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.
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.
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.
B2 noun /stɑːr fɪʃ/

Star fish

Meaning
a marine echinoderm with five or more radiating arms, typically found on the sea floor
Example
The starfish slowly moved across the ocean floor searching for food.
B2 adjective /ˈspɪr.ɪ.tʃu.əl/

Spiritual

Meaning
relating to the human spirit or soul; religious or sacred
Example
She found spiritual peace through meditation.
C2 adjective /ˌsʌpəzɪˈtɪʃəs/

supposititious

Meaning
Based on assumption rather than fact; not genuine or authentic.
Example
The story turned out to be supposititious, with no evidence to support it.
A2 verb /sɔːrt/

sort

Meaning
to arrange or categorize something
Example
Please sort the files by date.
C2 noun /ˈstrɪplɪŋ/

stripling

Meaning
a young man who is not yet fully grown
Example
The stripling dreamed of becoming a brave knight.
C2 adjective /spæzˈmɒdɪk/

spasmodic

Meaning
occurring irregularly or in sudden bursts
Example
The patient experienced spasmodic coughing during the night.
C1 noun /ˌsɛlfsəˈfɪʃənsi/

Self-sufficiency

Meaning
the ability to supply one's own needs without external assistance; independence
Example
The farm achieved complete self-sufficiency in food production.
C1 adjective /ˌsʌb.təˈreɪ.ni.ən/

subterranean

Meaning
Existing, occurring, or done under the earth's surface.
Example
Subterranean water sources help sustain agriculture.
B1 adjective /ˈsʌm.wʌt/

Somewhat

Meaning
to some extent; rather; moderately
Example
The movie was somewhat interesting but not great.
C2 noun /ˈsɒfɪst/

sophist

Meaning
a person who uses clever but misleading arguments
Example
He was dismissed as a sophist who twisted facts to win debates.
C1 noun, verb /səˈpiːnə/

subpoena

Meaning
a legal document ordering someone to attend court; to summon someone with such a document
Example
The witness received a subpoena to appear in court next week.
B2 verb səˈsteɪnd

sustained

Meaning
Strengthened and supported; not allowed to weaken or fail.
Example
The proposal was not sustained.
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.
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.
C2 noun /spʌndʒ ɡɔːrd/

Sponse gourd

Meaning
a fibrous gourd that becomes sponge-like when dried, used for cleaning and in cooking when young
Example
The sponge gourd can be eaten when young or dried to make natural scrubbers.
C2 noun /ˌself əˈbeɪs.mənt/

self-abasement

Meaning
The act of belittling or humiliating oneself.
Example
His constant self-abasement made others uncomfortable.
C2 verb /ˈsʌli/

sully

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

science

Meaning
The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
Example
Science continues to explore the unknown.
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.
C1 noun /ˈsɔːl.tɪd fɪʃ/

Salted fish

Meaning
fish preserved with salt; dried and salted fish for storage
Example
Salted fish is a traditional way to preserve seafood.
B2 verb /səˈsteɪn/

sustain

Meaning
To support, maintain, or keep something going over time.
Example
The team worked hard to sustain their success.
B2 adjective /ˈʃeɪm.fəl/

Shameful

Meaning
causing shame; disgraceful; embarrassing
Example
His shameful behavior embarrassed the entire family.
A2 adjective /ˈsɛvənθ/

seventh

Meaning
constituting number seven in a sequence; coming after the sixth
Example
Her birthday is on the seventh of July.
C1 adjective /ˈsliːzi/

sleazy

Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
B2 noun /ˈskændəl/

scandal

Meaning
an event or action that causes public outrage or damage to one's reputation
Example
The politician's affair became a public scandal.
B2 adjective /slɪm/

slim

Meaning
thin in an attractive or healthy way; small in amount or chance
Example
She looked slim in her new dress.
C1 noun /ˈskɛptɪk/

skeptic

Meaning
A person who doubts or questions accepted beliefs or claims.
Example
The scientist was a skeptic of theories without solid evidence.
C1 adjective /ˈsʌlən/

sullen

Meaning
bad-tempered and gloomy; silently resentful
Example
She gave him a sullen look and walked away.
B1 adjective /ʃeɪpt/

shaped

Meaning
having a particular form or appearance
Example
The sculpture was shaped like a human figure.
C1 adjective /ˌsæŋktɪˈmoʊniəs/

sanctimonious

Meaning
Making a show of being morally superior to others; hypocritically pious.
Example
He gave a sanctimonious speech about honesty while he himself was corrupt.
B2 adjective /ˈspaɪ.rəl/

Spiral

Meaning
winding in a continuous curve; helical
Example
The spiral staircase led to the top floor.
A1 noun /ˈstɔːri/

story

Meaning
a narrative of real or imaginary events
Example
She told a fascinating story about her travels.
C2 noun /spjuːm/

spume

Meaning
Froth or foam, especially found on waves or liquids.
Example
The waves crashed against the rocks, leaving spume in the air.
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 adjective /ˈslɒp.i/

Sloppy

Meaning
careless; messy; done without care or attention to detail
Example
His sloppy handwriting was difficult to read.
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.
B1 adverb /ˈʃɔːt.li/

Shortly

Meaning
soon; in a short time; briefly
Example
The meeting will begin shortly.
A1 adjective /ˈspɛʃəl/

special

Meaning
different from what is usual; better or greater than normal
Example
This gift is very special to me.
B2 adjective /sɔːr/

sore

Meaning
painful or aching, usually in a specific part of the body
Example
After the long run, my legs were sore.