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C1 adjective /ˈkɒnvɛks/

convex

Meaning
curved or rounded outward
Example
The lens has a convex shape to focus light.
C2 verb /kɒnˈkætəneɪt/

concatenate

Meaning
To link things together in a series or chain.
Example
The program concatenates two strings into one.
C1 adjective kəˈlɒs.əl

Colossal

Meaning
Extremely large, gigantic, enormous in size or extent.
Example
The colossal pyramids of Egypt are a marvel of architecture.
C2 verb /ˌkɒnvəˈlɛs/

convalesce

Meaning
to recover health and strength after illness or medical treatment
Example
After the surgery, she spent several weeks convalescing at home.
C1 noun /kənˈtʃɛrtoʊ/

concerto

Meaning
a musical composition for one or more solo instruments accompanied by an orchestra
Example
She played a Mozart concerto with the orchestra.
C2 adjective /kənˈvɪviəl/

convivial

Meaning
friendly, lively, and enjoyable; sociable
Example
The party had a convivial atmosphere with music and laughter.
B1 noun, adjective /ˈkrɪmɪnəl/

criminal

Meaning
A person who has committed a crime; relating to crime
Example
The police arrested a dangerous criminal last night.
A2 verb /kəmˈpleɪn/

complain

Meaning
to express dissatisfaction or annoyance about something
Example
He often complains about the noise in the neighborhood.
B2 verb /ˈkʌltɪveɪt/

cultivate

Meaning
to grow crops or plants; to develop or improve something
Example
Farmers cultivate rice in the paddy fields.
C2 noun /ˈkɒliər/

collier

Meaning
a person who works in coal mines or a ship carrying coal
Example
The collier spent long hours underground extracting coal.
C2 verb /ˌkɒntrəˈvɜːrt/

controvert

Meaning
to dispute or argue against; to contradict
Example
The scientist controversed the previous research findings.
B2 verb /kəmˈpaɪl/

compile

Meaning
to collect information or material and put it together in a list, report, or book
Example
She compiled the research data into a detailed report.
C1 noun /kəmˈprɛʃn̩/

compression

Meaning
The act of pressing or squeezing something into a smaller space.
Example
File compression helps reduce storage requirements.
C1 verb /kriːk/

creak

Meaning
to make a high-pitched, squeaking noise when moved
Example
The old door creaked as she opened it.
B1 adjective /ˈklæsɪkəl/

classical

Meaning
relating to ancient Greek or Roman culture, or representing traditional excellence in art, music, or literature
Example
She loves listening to classical music while studying.
B2 noun /kɔːrps/

corpse

Meaning
a dead body, especially of a human
Example
The police discovered a corpse in the abandoned house.
B2 verb, noun /ˈkɒntɛst/

contest

Meaning
verb: to compete or challenge; noun: a competition or dispute
Example
She decided to contest the election against the incumbent.
A2 noun/verb /ˈsɜːrkəl/

circle

Meaning
a round shape; to move all the way around something
Example
The children sat in a circle.
C1 adjective /ˌkɒndɪˈsɛndɪŋ/

condescending

Meaning
having or showing an attitude of patronizing superiority
Example
Her condescending tone upset her colleagues.
B2 adjective /kəmˈpærətɪv/

Comparative

Meaning
involving comparison between two or more things; relative
Example
The study showed comparative results between different teaching methods.
C1 verb /kɑːrp/

carp

Meaning
to complain or find fault continually, often about trivial matters
Example
She tends to carp about the smallest inconveniences.
C1 noun /ˈkroʊniˌɪzəm/

cronyism

Meaning
The practice of favoring friends or associates, especially in political appointments or business deals.
Example
The company was accused of cronyism in hiring practices.
C2 noun /ˈkuː.li/

Cooly

Meaning
a laborer who does physical work for wages
Example
The cooly carried heavy bags at the railway station.
B1 noun /kæmˈpeɪn/

Campaign

Meaning
an organized course of action to achieve a particular goal; a series of military operations
Example
The environmental campaign successfully raised awareness about climate change.
A2 verb /kaʊnt/

count

Meaning
to determine the total number of something
Example
She carefully counted the money on the table.
A1 adjective /kuːl/

cool

Meaning
moderately cold; calm and composed; fashionable or impressive
Example
She kept a cool head during the crisis.
C2 verb /ˈkʌzən/

cozen

Meaning
to deceive, cheat, or trick someone
Example
He cozened the old man out of his money.
C1 noun /kənˈtɪnjuəm/

continuum

Meaning
A continuous sequence in which adjacent elements are not perceptibly different from each other, but the extremes are quite distinct.
Example
Life and death are often seen as part of the same continuum.
C1 noun /kəˈlɪɡrəfi/

calligraphy

Meaning
The art of beautiful and decorative handwriting.
Example
She took a course to improve her calligraphy skills.
B2 noun /ˈkreɪ.dəl/

Cradle

Meaning
a small bed for a baby, especially one that rocks from side to side
Example
The baby sleeps peacefully in the cradle.
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.
C2 verb /koʊˈhɪr/

cohere

Meaning
To stick together; to be united logically or physically.
Example
The ideas in his essay cohere well.
A2 verb /kəˈlɛkt/

collect

Meaning
to gather together; to accumulate items
Example
I collect stamps as a hobby.
C2 noun /kænt/

cant

Meaning
Hypocritical and insincere talk, especially about moral or religious principles.
Example
The politician's speech was filled with cant about honesty and integrity.
C1 verb কনডেন্স

condense

Meaning
To change from gas to liquid form; to become denser.
Example
Water vapor condenses into raindrops.
C2 noun /ˈkɒn.tɪ.nəns/

continence

Meaning
self-restraint, especially regarding bodily functions or desires
Example
He practiced continence to maintain focus on his studies.
B2 verb /kənˈfaɪn/

confine

Meaning
to restrict someone or something within certain limits; to keep someone in a closed space
Example
The prisoner was confined to his cell for 23 hours a day.
C1 noun /ˈkɒndjuɪt/ or /ˈkɑːnduɪt/

conduit

Meaning
a channel or pipe for conveying water, electricity, or information
Example
The cable was placed inside a protective conduit.
C2 noun /kɔːrˈteɪʒ/

cortege

Meaning
a solemn procession, especially for a funeral
Example
A cortege of mourners followed the hearse to the cemetery.
C1 adjective /kəmˈpʌlsɪv/

compulsive

Meaning
Resulting from or acting on an irresistible urge, especially one that is against one's conscious wishes.
Example
He is a compulsive gambler who cannot stop placing bets.
B2 noun /ˌkɑː.bəʊˈhaɪ.dreɪts/

carbohydrates

Meaning
Organic compounds consisting of carbon, hydrogen, and oxygen, serving as a primary source of energy for the body.
Example
Whole grains are a great source of healthy carbohydrates.
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 kəˈlɛktɪv

collective

Meaning
Done by people acting as a group; shared by all members of a group.
Example
Victory Day represents our collective pride.
A1 verb, noun /tʃɛk/

check

Meaning
To examine, inspect, or verify something; also a written order to a bank to pay money.
Example
Please check the report before submitting it.
C1 verb /ˈkaʊər/

cower

Meaning
to crouch down in fear
Example
The child cowered behind the sofa during the thunderstorm.
B2 noun /ˈkəʊ.tɪŋ/

coating

Meaning
A protective or decorative layer applied to a surface.
Example
A protective coating prevents rust formation.
B1 noun /kəˈnuː/

Canoe

Meaning
a narrow boat pointed at both ends and moved with a paddle
Example
They paddled their canoe down the peaceful stream.
C1 noun /ˈʃoʊ.vəˌnɪz.əm/

chauvinism

Meaning
Excessive or prejudiced support for one's own cause, group, or gender, often with contempt for others.
Example
The company's culture was criticized for promoting male chauvinism.
C1 verb /ˈkɒŋɡrɪɡeɪt/

congregate

Meaning
to gather together in a group; to assemble
Example
People congregate in the town square every evening.
B1 noun /ˈsɜːr.kəmˌsˌtæn.sɪz/

Circumstances

Meaning
the conditions that affect a situation, action, or event; facts or conditions connected with or relevant to an event
Example
Under normal circumstances, she would have arrived by now.
C2 adjective /ˈsɜː.kəm.spekt/

circumspect

Meaning
Wary and unwilling to take risks; careful to consider all circumstances and possible consequences.
Example
Investors must be circumspect before making decisions.
C1 noun /koʊlt/

Colt

Meaning
a young male horse, especially one under four years old
Example
The farmer trained the young colt to accept a saddle.
C1 adjective, noun /ˈkeɪnaɪn/

canine

Meaning
Relating to dogs; also refers to the pointed teeth in humans and animals
Example
The police trained a canine unit for search operations.
B2 adjective /ˈkɜːrtiəs/

courteous

Meaning
polite, respectful, or considerate in manner
Example
The staff at the hotel were very courteous to all guests.
C2 noun /kənˈtrɪʃ.ən/

contrition

Meaning
the state of feeling remorseful and repentant
Example
His contrition was evident after the apology.
B2 adjective /kruːd/

crude

Meaning
in a natural or raw state; not yet processed or refined
Example
The crude oil is processed into fuel and chemicals.
B1 noun kəˈmɪt.i

committee

Meaning
A group of people appointed for a specific function by a larger group.
Example
A 65-member committee was formed.
C2 verb /ˈtʃeɪ.sən/

chasten

Meaning
to correct or discipline; to humble or subdue
Example
The coach chastened the team after their poor performance.
C1 noun /kənˈsɜːvəˌtɔːri/

conservatory

Meaning
A greenhouse for growing plants or a school for music and the arts.
Example
They grew exotic plants in the conservatory.
C1 noun /ˈʃæsi/

chassis

Meaning
the base frame of a vehicle or other wheeled machine
Example
The mechanic examined the car's chassis for damage.
B2 noun /kənˈsɛʃən/

concession

Meaning
something that is granted, especially in response to demands; a compromise
Example
The company made several concessions during the negotiations.
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.
C1 noun /kuːp/

coop

Meaning
a small enclosure or cage for chickens or other birds
Example
The farmer checked the chickens in the coop every morning.
B2 adverb /kənˈtɪnjuəsli/

Continuously

Meaning
without interruption; in an unbroken sequence
Example
The machine operates continuously for 24 hours.
B2 noun /ˈklaɪ.mæks/

Climax

Meaning
the most intense, exciting, or important point of something; the highest or most intense point in a process
Example
The movie reached its climax during the final battle scene.
C2 adjective /krʌˈsteɪʃəs/

crustaceous

Meaning
relating to or having a hard shell like a crustacean
Example
The scientist studied the crustaceous fossils.
B2 noun /kəˈrʌp.ʃən/

Corruption

Meaning
dishonest or fraudulent conduct by those in power; the process of decay or decomposition
Example
The government launched a campaign to fight corruption in public offices.
B2 noun /ˈkɒmpoʊst/

compost

Meaning
decayed organic matter used as fertilizer
Example
The gardener added compost to enrich the soil.
B2 adjective /ˈkʌnɪŋ/

cunning

Meaning
Having or showing skill in achieving one's ends by deceit or evasion; cleverness in a tricky way.
Example
The cunning fox tricked the farmer.
B1 adjective kəˈmɜː.ʃəl

commercial

Meaning
Concerned with or engaged in commerce; having profit as a primary aim rather than artistic or other value.
Example
Commercial hubs attract investments.
B2 noun /kleɪ/

clay

Meaning
a natural material made of fine earth that becomes hard when baked, used for making pottery
Example
The artist molded the wet clay into a beautiful vase.
C2 verb /ˈtʃɔːrtl/

chortle

Meaning
to laugh in a breathy, gleeful way
Example
The audience chortled at the comedian's witty remarks.
C1 adjective /kəmˈpleɪsənt/

complacent

Meaning
showing self-satisfaction and a lack of concern about potential dangers or problems
Example
The team grew complacent after a few victories and stopped practicing hard.
A2 noun /kæmp/

Camp

Meaning
a place where soldiers live temporarily; a place with tents or huts for temporary accommodation
Example
The military established a camp near the border.
B2 noun /kənˈsɛnt/

consent

Meaning
permission for something to happen or agreement to do something
Example
She gave her consent before the operation.
A2 adjective /kənˈfjuːzd/

confused

Meaning
unable to think clearly; uncertain or puzzled
Example
She felt confused by the complicated instructions.
B1 noun /krɒp/

crop

Meaning
plants that are grown and harvested for food or other use
Example
The farmers harvested their rice crop in autumn.
B2 adjective /ˈkælkjuleɪtɪd/

calculated

Meaning
Done with full awareness of the consequences; deliberate or carefully planned.
Example
Her calculated move gave her an advantage over her competitors.
B2 noun /ˈkɑn.ʃəns/

Conscience

Meaning
an inner feeling or voice viewed as acting as a guide to the rightness or wrongness of one's behavior
Example
His conscience prevented him from lying to his parents about his grades.
A1 verb /kætʃ/

catch

Meaning
to grab something that is moving; to get a disease; to understand
Example
Can you catch the ball I'm throwing?
B2 adjective /ˈsɪvɪk/

civic

Meaning
relating to a city, town, or the duties of its citizens
Example
The mayor encouraged people to take part in civic activities.
C1 verb /ˈkrɒs.briːd/

crossbreed

Meaning
to produce an animal or plant by mating two different breeds, varieties, or species
Example
Farmers crossbreed cows to improve milk production.
C1 adjective kənˈkɝː.ənt

concurrent

Meaning
Existing, happening, or done at the same time.
Example
The conference had concurrent sessions on various topics.
C1 noun /kəˈmɪtl̩/

committal

Meaning
The action of sending a person to prison or a mental hospital; also the act of committing something to a particular place.
Example
The judge ordered the committal of the accused to custody.
A2 verb /klaɪm/

climb

Meaning
to go up using hands and feet; to ascend
Example
We decided to climb the mountain.
C1 noun kəˈmjuːnɪti ˈsɜːrvɪs aɪˈdiːəlz

community service ideals

Meaning
Principles and standards of serving the community for social good.
Example
Community service ideals must be taught in schools.
B2 adjective /kəʊˈhɪə.rənt/

coherent

Meaning
Logical and consistent; forming a unified whole; clear and easy to understand.
Example
His speech was clear and coherent.
C2 adjective /ˈkɒŋɡruənt/

congruent

Meaning
in agreement or harmony; having the same shape and size in geometry
Example
Their values are congruent with the goals of the organization.
B2 noun /kəˈtæstrəfi/

catastrophe

Meaning
A sudden and widespread disaster or misfortune.
Example
The earthquake was a catastrophe for the entire region.
C1 adjective /kəˈlæpsəbl̩/

collapsible

Meaning
able to be folded down or reduced in size
Example
She bought a collapsible chair for camping.
C1 noun /ˈʃɪvəlri/

chivalry

Meaning
The medieval knightly system with its moral, social, and religious code; courteous behavior, especially toward women.
Example
The knight lived by the code of chivalry.
B2 adjective /ˌkɒn.fɪˈden.ʃəl/

Confidential

Meaning
secret; private; intended to be kept secret
Example
Please keep this information confidential.
A2 noun /kəˈlek.ʃən/

Collection

Meaning
a group of objects gathered together; the action or process of collecting
Example
She has an impressive collection of vintage books in her library.
B1 adjective ˈkʌltʃərəl

cultural

Meaning
Relating to the arts and to intellectual achievements.
Example
Schools organize cultural programs to honor Victory Day.
A2 verb /kræʃ/

crash

Meaning
To collide violently; to suddenly stop working (for machines or computers).
Example
The car crashed into the wall at high speed.
B2 adjective /ˈkaʊntləs/

countless

Meaning
too many to be counted; innumerable
Example
There are countless stars in the sky.
B1 noun /kloʊðz ˈaɪərn/

Clothes iron

Meaning
An electric appliance used to remove wrinkles from clothes by applying heat and pressure
Example
I need to use the clothes iron to make my shirt look neat for the meeting.
B1 noun /ˈsɜːrkəmstæns/

circumstance

Meaning
a fact or condition connected with an event or action
Example
She handled the difficult circumstances bravely.
B1 noun /ˈtʃæn.əl/

Channel

Meaning
a television or radio station; a passage for water or other liquids; a means of communication
Example
The news channel provided live coverage of the important event.
B1 noun /kənˈsʌltənt/

consultant

Meaning
A professional who provides expert advice in a particular area.
Example
The company hired a consultant to improve its marketing strategy.
B1 adjective /kriˈeɪtɪv/

creative

Meaning
Having the ability to produce new and original ideas or things.
Example
She is very creative in her writing.
C2 noun /ˈkeɪ.tɪf/

caitiff

Meaning
A contemptible or cowardly person.
Example
The knight despised the caitiff who betrayed his comrades.
A2 verb ˈsɛləbreɪtɪŋ

celebrating

Meaning
The act of acknowledging a significant or happy day or event with a social gathering or enjoyable activity.
Example
Celebrating awareness days helps spread important messages.
C2 verb /kɔːk/

caulk

Meaning
to seal a crack or gap with a waterproof filler
Example
He caulked the window frames to stop the draft.
A2 noun /ˈkʌl.tʃər/

Culture

Meaning
the arts and other manifestations of human intellectual achievement; the customs and beliefs of a particular society
Example
Learning about different cultures helps us understand and appreciate diversity.
C1 noun /kənˈtɪn.ju.əns/

continuance

Meaning
the state of continuing or being prolonged; persistence
Example
The continuance of the project depended on securing additional funding.
C2 noun /kəˈræf/

carafe

Meaning
a glass container without handles used for serving drinks like water or wine
Example
The waiter brought a carafe of water to the table.
C2 adjective /kənˈkɒmɪtənt/

concomitant

Meaning
Naturally accompanying or associated with something.
Example
Increased stress is often concomitant with long working hours.
A1 adjective /ˈtʃɒk.lət/

Chocolate

Meaning
a dark brown color like chocolate; the color of cocoa
Example
The chocolate brown sofa looks elegant in the living room.
C2 noun /kəˈtæb.ə.lɪ.zəm/

catabolism

Meaning
The breakdown of complex molecules in living organisms to form simpler ones together with the release of energy; destructive metabolism.
Example
Catabolism plays a crucial role in cellular energy production.
C1 noun /ˈkoʊhɔːrts/

cohorts

Meaning
Groups of people who share a common feature or experience.
Example
Researchers compared the health outcomes of different cohorts.
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.
C2 noun /ˈkɒŋ.ɡru.əns/

congruence

Meaning
Harmony, compatibility and agreement between different elements.
Example
The congruence between their ideas made collaboration easy.
B2 noun /kənˌfɪɡəˈreɪʃən/

configuration

Meaning
an arrangement of parts or elements in a particular form or structure
Example
The configuration of the system needs to be adjusted for better performance.
B2 noun /ˈklɪərəns/

clearance

Meaning
official permission or authorization; the removal of something unwanted; the distance between two objects
Example
The pilot received clearance to land the plane.
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 noun /ˈsen.tər/

center

Meaning
A place or building designated for a particular activity or service.
Example
The first robotic surgery center was established in Rangpur.
A2 noun; verb /tʃæt/

chat

Meaning
an informal conversation; to talk in a friendly, informal way
Example
We had a long chat after dinner.
C2 adjective /kənˈvɜːrsənt/

conversant

Meaning
familiar with or knowledgeable about something
Example
She is conversant with the latest developments in technology.
A1 verb /kliːn/

clean

Meaning
To make something free from dirt, marks, or mess.
Example
She cleaned the kitchen before the guests arrived.
C2 noun /ˈkʌvən/

coven

Meaning
a group or gathering of witches
Example
The witches met secretly in a coven in the forest.