circadian rhythm
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C1 noun sɜːrˈkeɪdiən ˈrɪðəm

circadian rhythm

Meaning
The body's natural sleep-wake cycle that occurs within 24 hours
Example
Exposure to natural light regulates the circadian rhythm.
A2 adjective /ˈkʌmɪŋ/

coming

Meaning
approaching or happening soon
Example
We are preparing for the coming festival.
B1 noun /tʃɑːrt/

chart

Meaning
a sheet of information in the form of a table, graph, or diagram
Example
The teacher used a chart to explain the statistics.
C1 noun /ˈkɑːrkəs/

carcass

Meaning
the dead body of an animal, especially after being slaughtered
Example
Vultures fed on the carcass left in the field.
C2 noun /kəˈrɑːləri/

corollary

Meaning
a direct or natural consequence or result
Example
One corollary of the new policy was increased public awareness.
C1 adjective /ˈkɒnvɛks/

convex

Meaning
curved or rounded outward
Example
The lens has a convex shape to focus light.
C1 noun /ˈsɪtrɪk ˈæsɪd/

Citric Acid

Meaning
a natural acid found in citrus fruits, used as a food preservative and flavoring agent
Example
Add a pinch of citric acid to preserve the color of the fruit jam.
C1 verb, noun /klɑːɡ/

clog

Meaning
to block or become blocked; a type of heavy wooden shoe
Example
The sink was clogged with food waste.
C1 adjective /kənˈsɛntrɪk/

concentric

Meaning
having a common center, as in circles or spheres
Example
The artist drew concentric circles on the canvas.
A2 adjective /ˈsɛntrəl/

central

Meaning
Situated in the middle; of the greatest importance.
Example
Water is central to human survival.
C2 adjective /sɛnˈtrɪpɪtəl/

centripetal

Meaning
Moving or directed toward a center.
Example
Centripetal force keeps the planets in orbit around the sun.
B2 adjective /ˈkʌltʃəd/

cultured

Meaning
characterized by refined taste, manners, and education
Example
She is a cultured woman who loves art and literature.
B2 noun /ˌkɑm.pənˈseɪ.ʃən/

Compensation

Meaning
something given or received as an equivalent for services, debt, loss, injury, or suffering; payment or reward
Example
The company provided financial compensation to the workers injured in the accident.
A2 noun /ˈkʊki/

cookie

Meaning
a small sweet baked food, usually with flour, sugar, and butter
Example
She offered me a chocolate chip cookie.
A2 noun /ˈkæs.əl/

Castle

Meaning
a large fortified building or set of buildings; a fortress
Example
The medieval castle stood majestically on top of the hill.
B2 noun /ˈkæriər/

carrier

Meaning
A person or thing that carries, transports, or conveys something; also an organization that provides transport services.
Example
The airline is the largest carrier in the country.
B1 noun /kənˌfɜːˈmeɪʃən/

confirmation

Meaning
the action of confirming something or the state of being confirmed
Example
She received a confirmation email for her appointment.
C1 noun /ˈkrɒkəri/

crockery

Meaning
Dishes, plates, cups, and other items made of earthenware or china.
Example
The hotel provided clean crockery for the guests.
C2 adjective /kənˈdʒɛktʃərəl/

conjectural

Meaning
based on guesswork or incomplete evidence rather than certain knowledge
Example
His explanation was purely conjectural and lacked proof.
B1 noun /kənˈsjuːmər/

consumer

Meaning
A person who buys and uses goods and services.
Example
The company focuses on understanding consumer needs.
C1 noun /kənˈfɛdərəsi/

confederacy

Meaning
a group of states, people, or organizations united for a common purpose
Example
The southern states formed a confederacy during the civil war.
C1 noun kənˈsjuː.mə.rɪ.zəm

consumerism

Meaning
The tendency to increase consumption of goods and the importance given to consuming products.
Example
Modern consumerism leads to increased demand for luxury goods.
B1 adverb /ˈkloʊsli/

closely

Meaning
in a way that is very near in space, time, or relationship; carefully and attentively
Example
The detective examined the evidence closely.
C1 noun /ˈtʃɪz.əl/

Chisel

Meaning
a tool with a sharp flat edge used for cutting or shaping wood, stone, or metal
Example
The carpenter used a chisel to carve the wood.
B2 noun /kɔːrd/

chord

Meaning
A group of musical notes played or sung together; also a straight line segment joining two points on a curve.
Example
She strummed a simple chord on the guitar.
C1 adjective /ˈkælkjʊleɪtɪŋ/

calculating

Meaning
acting in a scheming and ruthlessly determined way
Example
He had a cold and calculating approach to business.
A2 noun /kɔɪnz/

coins

Meaning
Flat, typically round pieces of metal issued by a government as money.
Example
He collected old coins from different countries.
C2 verb /kənˈstrɪndʒ/

constringe

Meaning
to cause to shrink or contract; to constrict
Example
The medicine helped constringe the swollen tissues.
A2 noun /ˈkɜːr.tən/

Curtain

Meaning
a piece of material suspended at the top to form a covering or screen, typically movable sideways
Example
She drew the curtains to block out the bright sunlight.
A2 noun /ˈsɪɡəˌrɛt/

cigarette

Meaning
a small roll of finely cut tobacco wrapped in paper for smoking
Example
He lit a cigarette after dinner.
C2 noun /ˈkreɪniəm/

cranium

Meaning
the skull, especially the part enclosing the brain
Example
The archaeologists carefully examined the ancient cranium.
B1 noun /kənˈkluː.ʒən/

Conclusion

Meaning
the end or finish of an event, process, or text; a judgment or decision reached by reasoning
Example
The conclusion of the research paper summarized all the important findings.
B1 noun /ˈkætl/

cattle

Meaning
large domesticated animals such as cows and bulls that are kept on a farm for their milk, meat, or hides
Example
The farmer owns a herd of cattle that graze near the river.
C2 noun ˈkɑː.dərz

cadres

Meaning
A small group of people specially trained for a particular purpose or profession; a group of activists in a communist or other political organization.
Example
There are 26 cadres under BPSC.
B2 verb /kənˈveɪ/

convey

Meaning
To communicate or make known; to transport or carry from one place to another.
Example
The teacher conveys the lesson clearly to students.
C1 verb কনডেন্স

condense

Meaning
To change from gas to liquid form; to become denser.
Example
Water vapor condenses into raindrops.
C2 adjective /krəˈmætɪk/

chromatic

Meaning
Relating to colors or, in music, notes outside the standard scale.
Example
The artist used a chromatic palette to create vibrant contrasts.
C1 noun ˌkʌl.mɪˈneɪ.ʃən

culmination

Meaning
The highest or climactic point of something, especially as attained after a long time.
Example
The project reached its culmination after years of effort.
C1 verb /kʌl/

cull

Meaning
to select or remove from a larger group, often to reduce numbers
Example
The farmers decided to cull the sick animals from the herd.
C2 noun /ˈkɒl.ə.kwi/

colloquy

Meaning
A formal conversation or dialogue, often on serious or academic topics.
Example
The professors engaged in a deep colloquy about the future of education.
B1 noun /tʃɑːrm/

Charm

Meaning
the power or quality of giving delight or arousing admiration; a magical spell or talisman
Example
Her natural charm and wit made her popular at social gatherings.
A2 noun /ˈkɑr.pɪt/

Carpet

Meaning
a floor covering made from thick woven fabric
Example
The Persian carpet in the living room was a family heirloom.
C2 noun /kənˌɡlɒməˈreɪʃən/

conglomeration

Meaning
A collection or mixture of different things grouped together.
Example
The market is a conglomeration of small shops and food stalls.
B1 noun /ˈkæp.ɪ.təl/

Capital

Meaning
the most important city or town of a country or region; wealth in the form of money or assets
Example
Paris is the capital of France and also a major financial capital.
A1 modal verb /kʊd/

could

Meaning
Used to indicate possibility, ability, or permission in the past or as a polite suggestion.
Example
He could swim when he was a child.
C2 adjective /kəˈpeɪ.ʃəs/

Capacious

Meaning
having a lot of space inside; roomy and spacious
Example
The capacious hall can accommodate five hundred people.
C2 noun /kəˈdævər/

cadaver

Meaning
A dead human body, especially one used for medical study.
Example
Medical students dissected the cadaver to learn about human anatomy.
C2 noun ˌkɒmpjʊˈteɪʃənəl kəˌmjuːnɪˈkeɪʃən

computational communication

Meaning
Digital exchange and automated interaction; the use of computational methods and systems to facilitate communication and information sharing.
Example
Computational communication is reshaping how we share information.
B1 noun /ˈtʃɛərmən/

chairman

Meaning
the leader or head of a meeting, committee, or organization
Example
The chairman opened the meeting with a short speech.
B2 noun kənˌtæm.ɪˈneɪ.ʃən

contamination

Meaning
The process of making something less pure by exposure to or addition of a poisonous or polluting substance.
Example
Contamination of air leads to health issues.
B1 noun /tʃiːk/

Cheek

Meaning
either side of the face below the eye; impudent or disrespectful behavior
Example
The baby's rosy cheeks showed she was healthy and happy.
B1 noun kəˈpæs.ə.ti

capacity

Meaning
The maximum amount that something can contain or produce; the ability or power to do or understand something.
Example
The cable has the capacity to handle vast data traffic.
C1 noun /ˈkroʊ.bɑːr/

Crowbar

Meaning
a heavy iron bar with a curved end used as a lever for prying things apart
Example
He used a crowbar to remove the old nails.
A2 adjective /kjuːt/

cute

Meaning
attractive in a pretty or endearing way
Example
That puppy is so cute!
A2 verb /tʃɑːrdʒ/

charge

Meaning
to demand payment; to formally accuse; to rush forward aggressively
Example
The store charges extra for home delivery.
B2 verb /kənˈsiːd/

concede

Meaning
to admit something is true or valid, often reluctantly
Example
She finally conceded that she was wrong.
B1 verb kənˈsjuːmz

consumes

Meaning
Use up (a resource); eat, drink, or ingest (food or drink).
Example
An individual consumes around 20 kg of plastic annually.
B1 noun /ˈkaʊn.səl/

council

Meaning
an assembly of people chosen or elected to make decisions or advise on matters
Example
The city council voted to improve public transportation.
C2 adjective /ˈkræbɪd/

crabbed

Meaning
difficult to read or understand; ill-tempered
Example
His handwriting was crabbed and almost illegible.
C1 noun /ˈkærət/

carat

Meaning
a unit of weight for precious stones, equal to 200 milligrams
Example
She received a two-carat diamond ring for her engagement.
B2 noun /ˈtʃæpəl/

chapel

Meaning
A small church or a room used for Christian worship, often within a larger building.
Example
The couple got married in a small countryside chapel.
A2 noun /kriːm/

Cream

Meaning
the thick white or pale yellow fatty liquid that rises to the top of milk
Example
She whipped the cream until it became fluffy.
C2 verb /kəˈraʊz/

carouse

Meaning
to drink and enjoy oneself noisily, often with others
Example
They stayed up all night to carouse after the victory.
C1 adjective ˈkɒn.təm.plə.tɪv

contemplative

Meaning
Expressing or involving prolonged thought; meditative and reflective.
Example
He spent a contemplative evening reflecting on his decisions.
A1 noun /tʃaɪld/

child

Meaning
a young human being below the age of puberty or below the legal age of majority
Example
The child played happily in the park.
C1 noun /ˈkɒb.lər/

Cobbler

Meaning
a person who repairs shoes and other leather goods
Example
The cobbler fixed my broken shoes perfectly.
B2 adjective /kənˈsek.jə.tɪv/

Consecutive

Meaning
following each other in uninterrupted succession; sequential
Example
She won three consecutive matches in the tournament.
B1 noun /ˈkɒtən/

cotton

Meaning
A soft white fibrous substance used to make cloth and thread.
Example
This shirt is made of pure cotton.
C2 noun /kɒɡˈnoʊmən/

cognomen

Meaning
A family name or surname; an additional name or nickname.
Example
His cognomen became widely known in literary circles.
C1 noun /krʌtʃ/

crutch

Meaning
a support used by someone injured to walk; also something relied upon for support or help
Example
He had to use crutches after breaking his leg.
C2 noun /ˌkæstɪˈɡeɪʃən/

castigation

Meaning
Severe criticism or punishment for wrongdoing.
Example
The manager’s harsh castigation shocked the entire team.
B2 noun /ˈkɒntræktər/

contractor

Meaning
a person or company that agrees to provide materials or labor to perform a service or do a job
Example
The contractor completed the building project on time.
B2 noun /ˌkovuːɪɡˈzɪs.təns/

Co-existence

Meaning
the state of existing together at the same time or in the same place; peaceful cohabitation
Example
The peaceful co-existence of different cultures makes this city unique.
C1 noun /kəˈθɑːrsɪs/

catharsis

Meaning
The process of releasing strong emotions, providing relief.
Example
Writing in her diary was a form of catharsis for her.
C1 noun /ˈʃæpəroʊn/

chaperon

Meaning
An older person who accompanies and supervises young people in social situations.
Example
The teacher acted as a chaperon during the school dance.
B2 noun /ˈkɒn.flɪkt ˌrez.əˈluː.ʃən/

conflict resolution

Meaning
The process of finding peaceful solutions to disputes or disagreements between parties.
Example
Conflict resolution is vital for global peace.
B2 adjective /keɪˈɒtɪk/

Chaotic

Meaning
in a state of complete confusion and disorder
Example
The situation became chaotic after the announcement.
C2 noun /ˈkɒn.tjʊ.mə.li/

contumely

Meaning
insulting or humiliating treatment
Example
He endured the contumely of his colleagues with patience.
C2 verb /ˈkɒndʒʊɡeɪt/

conjugate

Meaning
to list the different forms of a verb according to tense, person, and number
Example
Students are asked to conjugate the verb 'to be'.
B1 noun /ˈkɒnflɪkt/

conflict

Meaning
A serious disagreement or argument, often a prolonged one.
Example
The two countries are trying to resolve the conflict through negotiations.
B1 noun /kənˈfjuː.ʒən/

Confusion

Meaning
lack of understanding; uncertainty; the state of being bewildered or unclear in one's mind
Example
There was confusion about the meeting time, so half the team arrived late.
B2 noun /kənˈfɛʃən/

confession

Meaning
a statement admitting that one is guilty of a crime or has done something wrong
Example
The suspect made a full confession to the police.
B1 adjective /ˈkɒn.stənt/

Constant

Meaning
occurring continuously over a period of time; unchanging; steady
Example
The machine runs at a constant speed.
C1 adjective /ˈsiːs.ləs/

Ceaseless

Meaning
continuing without pause or interruption; endless
Example
The ceaseless rain lasted for three days.
B1 adjective /kənˈvɪnst/

convinced

Meaning
completely certain or sure about something
Example
She was convinced that he was telling the truth.
B2 noun /kənˈvɪk.ʃən/

conviction

Meaning
A firmly held belief or opinion.
Example
She spoke with conviction, making everyone believe her.
B2 adjective /ˈkaʊntləs/

countless

Meaning
too many to be counted; innumerable
Example
There are countless stars in the sky.
C1 noun /ˈkɜːrfjuː/

curfew

Meaning
a rule requiring people to stay indoors after a certain time, usually at night
Example
The city imposed a curfew during the unrest.
C1 noun ˌkæp.ɪ.təl.aɪˈzeɪ.ʃən

capitalization

Meaning
The total market value of a company's shares or the provision of capital for a company or activity.
Example
The company's capitalization reached $1 billion in market value.
C2 noun /ˈkælvəri/

calvary

Meaning
A place or experience of intense suffering, originally the site of Jesus’s crucifixion.
Example
For many refugees, the journey across the desert was a calvary.
B2 noun /ˈkjuː.bɪ.kəl/

cubicle

Meaning
A small partitioned-off area of a room, typically in an office.
Example
She works in a cubicle with three other colleagues.
C2 noun /ˈkæʒuɪstri/

casuistry

Meaning
The use of clever but false reasoning, especially in relation to moral questions.
Example
The lawyer’s argument was dismissed as mere casuistry.
B2 noun /ˈtʃɒp.ər/

Chopper

Meaning
a tool with a heavy blade for chopping wood; a helicopter
Example
The lumberjack swung the chopper to cut down the tree.
B2 verb /klɪŋ/

cling

Meaning
to hold on tightly to someone or something
Example
The child clung to his mother in fear.
A2 noun /ˈkrɒk.ə.daɪl/

Crocodile

Meaning
a large reptile with a long mouth and sharp teeth that lives in rivers and lakes in hot countries
Example
The crocodile slowly moved through the murky water.
B2 verb /ˈkæt.ɪ.ɡə.raɪzd/

categorized

Meaning
Placed in a particular class or group.
Example
The city was categorized as highly polluted.
C1 noun /krəˈnɒlədʒi/

chronology

Meaning
The arrangement of events or dates in the order of their occurrence.
Example
The chronology of the dynasty was carefully studied by historians.
B2 adjective /ˈtʃær.ɪ.tə.bəl/

Charitable

Meaning
generous in giving to those in need; showing kindness
Example
She is known for her charitable work in the community.
B2 noun /ˈkaʊn.səl.ər/

counselor

Meaning
a person trained to give guidance on personal, social, or psychological problems
Example
The school counselor helped the student deal with stress.
C1 noun /ˈkɒnsjʊlət/

consulate

Meaning
the building or office where a consul works
Example
He went to the consulate to renew his visa.
B2 noun /ˌkɒndɛnˈseɪʃən/

condensation

Meaning
The process of water vapor changing into liquid; also, the act of making something more concise.
Example
Condensation formed on the windows during the cold night.
C1 verb /kənˈfleɪt/

conflate

Meaning
To combine two or more things, often confusingly, into one.
Example
The article tends to conflate facts with opinions.
B2 noun /ˈkeɪ.ɒs/

Chaos

Meaning
complete disorder and confusion; a state of total confusion with no order
Example
The earthquake caused chaos in the city as buildings collapsed and people panicked.
C2 verb /kəˈnaɪv/

connive

Meaning
to secretly allow or be involved in a wrongdoing
Example
The manager connived with the supplier to cheat the company.
C1 verb kəˈrɒb.ə.reɪt

corroborate

Meaning
Confirm or give support to a statement, theory, or finding.
Example
The witness corroborated the defendant's testimony.
A1 noun /tʃeər/

Chair

Meaning
a separate seat for one person, typically with a back and four legs
Example
Please sit on the chair.
C1 noun /ˈkʌvənənt/

covenant

Meaning
a formal agreement or promise, often legally binding
Example
The landlord and tenant signed a covenant to maintain the property.
C2 noun /ˈtʃænsəri/

chancery

Meaning
A court of equity or the office of a chancellor.
Example
The case was taken to the chancery court for resolution.
B2 verb /ˈkɒm.plɪ.keɪt/

complicate

Meaning
To make something more difficult or confusing.
Example
The new rules will only complicate the process.
B2 adverb /ˈkæʒ.u.ə.li/

Casually

Meaning
in a relaxed and informal way; without much thought or preparation
Example
He casually mentioned that he was leaving.
A1 verb /kɔːl/

call

Meaning
to say something loudly; to telephone someone; to name
Example
Please call me when you arrive home.
B2 adjective /kræmpt/

cramped

Meaning
uncomfortably small or restricted
Example
The room was so cramped that we could barely move.
B2 noun /ˈkloʊʒər/

closure

Meaning
the action or process of closing something, or the sense of finality or resolution.
Example
The closure of the company left many employees without jobs.
B2 adjective /ˈkɒnʃəs/

conscious

Meaning
Aware of and responding to one's surroundings; awake.
Example
She was fully conscious after the surgery.
C2 noun /kənˈtrɪʃ.ən/

contrition

Meaning
the state of feeling remorseful and repentant
Example
His contrition was evident after the apology.
A1 noun /ˈtʃɪk.ən/

Chicken

Meaning
a domestic fowl kept for its eggs or meat; the meat of this bird used as food
Example
The chicken laid fresh eggs every morning.
B1 noun/verb /koʊd/

code

Meaning
a system of words, letters, or symbols used to represent information or instructions
Example
He wrote a code to solve the problem on the computer.
C1 noun /ˈkɒnɪfər/

conifer

Meaning
a type of tree that bears cones and evergreen needle-like leaves, such as pine or fir
Example
The forest is dominated by conifers like pine and spruce.
A2 verb /ˈkɑːpi/

copy

Meaning
to make an identical reproduction of something
Example
Please copy this document for the meeting.
C2 noun /kəˈpærɪsən/

caparison

Meaning
an ornamental covering for a horse; rich and elaborate clothing or decoration
Example
The king’s horse was adorned with a golden caparison.
C1 noun /kənˈspɪrə.tər/

conspirator

Meaning
a person who secretly plans with others to do something unlawful or harmful
Example
The conspirator was arrested before the plan could be carried out.