challenges
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A2 noun /ˈtʃælɪndʒɪz/

challenges

Meaning
Difficult tasks or situations that test someone's abilities or resources.
Example
Overcoming challenges is the key to personal growth.
B1 adverb /ˈtʃɪəfəli/

cheerfully

Meaning
in a happy and positive manner; with visible good spirits
Example
She greeted everyone cheerfully despite the long day.
C1 verb /kənˈdʒɛst/

congest

Meaning
To block or overcrowd a space, making movement or flow difficult.
Example
Heavy traffic can congest the city streets during rush hour.
A2 verb /tʃiːt/

cheat

Meaning
to act dishonestly; to break rules for advantage
Example
He cheats on the exam by copying answers.
B2 noun ˌsaɪ.bə.sɪˈkjʊə.rɪ.ti

cybersecurity

Meaning
The practice of protecting systems, networks, and programs from digital attacks
Example
Cybersecurity ensures safe digital operations.
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.
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.
A2 adjective /kjuːt/

cute

Meaning
attractive in a pretty or endearing way
Example
That puppy is so cute!
C1 noun /klæn/

clan

Meaning
a large family group or a close-knit community with shared interests or ancestry
Example
The entire clan gathered to celebrate the festival.
A1 verb, adjective /kloʊz/ (verb), /kloʊs/ (adjective)

close

Meaning
To shut something (verb); near in space or relationship (adjective).
Example
Please close the door when you leave.
C1 adjective /kəˈrəʊsɪv/

corrosive

Meaning
tending to cause corrosion; harmful or destructive to materials or people
Example
The chemical is highly corrosive and should be handled with care.
C1 noun /ˈkɒntrəbænd/

contraband

Meaning
goods that are illegal to import, export, or possess
Example
The police seized a shipment of contraband cigarettes.
B2 noun /ˈkænvəs/

canvas

Meaning
A strong, coarse cloth used for tents, sails, or painting.
Example
The artist prepared a canvas for his new painting.
C1 adjective kənˈten.ʃəs

contentious

Meaning
Causing or likely to cause an argument; controversial.
Example
The contentious issue divided global leaders.
C1 noun kənˌsɒl.ɪˈdeɪ.ʃən

Consolidation

Meaning
The process of converting newly learned information into long-term memory
Example
Sleep plays a key role in memory consolidation.
C2 noun /tʃæf/

Chaff

Meaning
the husks of corn or other seed separated by winnowing; worthless things; light-hearted joking
Example
The farmer separated the wheat from the chaff using traditional methods.
C1 noun /ˌkɔr.diˈæl.ɪ.ti/

Cordiality

Meaning
sincere affection and kindness; warm and friendly behavior
Example
The host's cordiality made all the guests feel welcome and comfortable.
B2 noun /ˈklær.ɪ.ti/

clarity

Meaning
The quality of being coherent and intelligible; transparency or lucidity.
Example
The speaker's clarity made the concept easy to understand.
B2 adjective ˈkɒɡnɪtɪv

cognitive

Meaning
Related to mental processes of perception, memory, judgment, and reasoning.
Example
Cognitive functions improve with practice and learning.
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.
C1 noun /kɑst/

Caste

Meaning
a social class system; a hereditary class of Hindu society
Example
The ancient caste system divided society into different social groups.
A1 noun/verb /ˈkʊkɪŋ/

cooking

Meaning
the process of preparing food by heating it
Example
Cooking is one of my favorite hobbies.
A2 noun /ˈkʌstəmər/

customer

Meaning
a person or organization that buys goods or services from a store or business
Example
The shopkeeper greeted the customer with a smile.
A2 verb /kəmˈper/

compare

Meaning
to examine similarities and differences between things
Example
I will compare these two products before buying.
B2 noun /ˈkɒŋɡrɛs/

congress

Meaning
a formal meeting or assembly, especially of representatives for discussion
Example
The international congress on climate change will be held next year.
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.
C1 adjective ˌkaʊntəprəˈdʌktɪv

counterproductive

Meaning
Having the opposite of the desired effect; tending to hinder rather than help.
Example
Counterproductive activities often stem from dissatisfaction.
B2 adjective /kəmˈpɛlɪŋ/

compelling

Meaning
Evoking interest, attention, or admiration in a powerful way.
Example
She gave a compelling speech about climate change.
C1 noun /ˈsɛtərə/

cetera

Meaning
Latin for 'the rest' or 'others'; commonly used in the phrase 'et cetera' meaning 'and so on'.
Example
We need to buy pens, paper, notebooks, et cetera.
C1 noun /kənˈsep.ʃən/

Conception

Meaning
the forming of an idea or plan; the fertilization of an ovum by a sperm; the action of conceiving
Example
The conception of this innovative project took several months of brainstorming.
C1 adjective /ˈkɔːrdiəl/

Cordial

Meaning
warmly friendly; sincere; heartfelt
Example
She gave us a cordial welcome at the front door.
C1 adjective /ˈkjʊərəbl/

curable

Meaning
Able to be cured or healed.
Example
The doctor assured her that the disease was curable.
B1 adjective /ˈkeɪ.pə.bəl/

Capable

Meaning
having the ability, fitness, or quality necessary to do or achieve something; competent
Example
She is capable of handling complex problems.
C1 noun /kriːd/

creed

Meaning
A system of religious or spiritual beliefs or a guiding principle.
Example
Freedom of speech is part of his personal creed.
C1 noun /ˈkæv.əl.ri/

Cavalry

Meaning
soldiers who fight on horseback; the part of an army formerly composed of troops on horseback
Example
The cavalry charged across the field with great speed.
C2 adjective /ˈklɛmənt/

clement

Meaning
mild or merciful; describing weather as mild and pleasant
Example
The prisoners hoped for a clement judge.
B1 noun /ˈkɒntɪnənt/

continent

Meaning
one of the large landmasses on Earth such as Asia, Africa, or Europe
Example
Asia is the largest continent in the world.
C1 verb /koʊks/

coax

Meaning
to persuade someone gently or gradually to do something
Example
She managed to coax the cat out of the tree with some food.
B2 adjective /ˈsɛntɪɡreɪd/

centigrade

Meaning
Relating to the Celsius temperature scale, where water freezes at 0° and boils at 100°.
Example
The weather forecast predicted 30 degrees centigrade.
B2 noun ˈkrɪp.toʊˌkɝː.ən.si

cryptocurrency

Meaning
Decentralized digital currency operated using blockchain technology.
Example
Bitcoin is the most popular cryptocurrency in the market.
B2 noun ˈkɛmɪkəl weɪst

chemical waste

Meaning
Waste material from industrial or laboratory processes that contains harmful chemicals.
Example
Chemical waste pollutes water bodies.
A2 noun /ˈkrɪk.ɪt/

Cricket

Meaning
a jumping insect that makes a chirping sound by rubbing its wings together
Example
We could hear crickets chirping in the evening.
B2 noun /kəmˈplaɪ.əns/

compliance

Meaning
The practice of conforming to rules, regulations, or laws; obedience to orders or instructions.
Example
Schools expect compliance with their rules and policies.
C1 adverb /ˈkrɒswaɪz/

Crosswise

Meaning
in the form of a cross; diagonally across
Example
Place the logs crosswise to build a stable fire.
C2 noun /ˌkɒntrəpəˈzɪʃən/

contraposition

Meaning
the act of placing two things in opposition for contrast or comparison
Example
The contraposition of the two theories highlighted their differences.
B1 verb /ˈkɒntrækt/

contract

Meaning
to make smaller; to enter into a formal agreement
Example
The company will contract a new supplier for materials.
C1 noun /ˈkoʊtʃ.mən/

Coachman

Meaning
a person who drives a horse-drawn carriage or coach
Example
The coachman skillfully guided the horses through the busy streets.
B2 noun /kloʊv/

Clove

Meaning
aromatic flower buds of a tree in the family Myrtaceae, used as a spice
Example
She added a few cloves to the mulled wine for extra flavor.
C1 adjective/verb /ˈkɒn.sə.mət/

consummate

Meaning
To complete or perfect something with great skill
Example
He is a consummate artist with years of experience.
B2 verb /kəˈmɛnd/

commend

Meaning
to praise formally or officially
Example
The teacher commended the students for their hard work.
B1 verb /krɔːl/

crawl

Meaning
to move slowly on hands and knees; to move very slowly
Example
The baby crawled across the floor to reach the toy.
B1 verb /kəˈmɪt/

commit

Meaning
To carry out or perpetrate an act; to pledge or bind to a course of action.
Example
He committed a serious mistake in the report.
C1 adjective /ˈkræfti/

crafty

Meaning
skilled at achieving goals through cunning or deceit; sly
Example
The crafty fox evaded the hunters again.
B2 noun /kəʊˌɔːdɪˈneɪʃən/

coordination

Meaning
the process of organizing different elements to work together effectively
Example
The coordination between the teams was flawless.
B2 verb /kənˈsiːd/

concede

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

competitor

Meaning
a person, team, or company that competes with others
Example
The company lowered its prices to beat its main competitor.
A2 noun, verb /kəˈrɪər/

career

Meaning
As a noun: a person’s course of professional life; as a verb: to move swiftly and in an uncontrolled way.
Example
She built a successful career in medicine.
B1 adjective /ˈkriːmi/

creamy

Meaning
having a smooth, rich texture like cream
Example
She poured a creamy sauce over the pasta.
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.
B2 verb /koʊp/

cope

Meaning
to deal effectively with something difficult
Example
She had to cope with a lot of pressure at work.
B2 noun /kriːk/

creek

Meaning
a small stream or narrow river
Example
We went fishing by the creek near our house.
A2 noun,verb /kɔːrt/

court

Meaning
a place where legal cases are heard or to seek favor or attention
Example
He courted the judge with respect.
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.
B2 verb /kənˈsɜːrv/

conserve

Meaning
to protect something from harm or destruction; to use resources carefully to avoid waste
Example
We must conserve water during the dry season.
B2 noun /ˈsaɪkloʊn/

cyclone

Meaning
a large-scale air mass that rotates around a strong center of low atmospheric pressure; a violent tropical storm
Example
The cyclone caused severe flooding along the coast.
C1 noun /ˈkɒrənər/

coroner

Meaning
an official who investigates sudden, violent, or suspicious deaths
Example
The coroner determined the cause of death was natural.
B2 adjective /kənˈdɪʃ.ən.əl/

Conditional

Meaning
dependent on certain conditions; not absolute
Example
The job offer is conditional upon passing the background check.
B2 noun /ˈkæt fɪʃ/

Cat fish

Meaning
a freshwater fish with whisker-like barbels around the mouth, commonly found in ponds and rivers
Example
Catfish is often fried and served with rice in Bengali cuisine.
C1 noun, verb /kriːs/

crease

Meaning
a line or fold produced on paper, cloth, or other material; to make a fold or wrinkle
Example
She ironed the shirt carefully to remove every crease.
A2 verb /kəˈnɛkt/

connect

Meaning
To join or fasten together; to establish a link or relationship.
Example
Social media helps us connect with others.
C2 noun /ˈkriːməri/

creamery

Meaning
a place where milk and cream are processed and dairy products are made
Example
The local creamery produces fresh butter and cheese daily.
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.
B1 adjective /ˈkoʊzi/

cozy

Meaning
giving a feeling of comfort, warmth, and relaxation
Example
We sat in a cozy little café on a rainy day.
C1 noun /ˈkruːsɪbəl/

crucible

Meaning
a severe test or trial; a container used for heating substances to very high temperatures
Example
The team emerged stronger from the crucible of competition.
B2 adjective /ˈtʃuːzi/

choosy

Meaning
very careful in choosing; selective
Example
She is very choosy about the clothes she wears.
C1 noun /ˈsɪstərn/

cistern

Meaning
A tank or container for storing water, usually for household use.
Example
The old house still had a cistern to collect rainwater.
B2 verb /ˈtʃɛrɪʃ/

cherish

Meaning
To hold something dear, to love and protect, or to keep a hope or memory alive.
Example
She cherishes the memories of her childhood home.
C2 noun /kɔːrˈteɪʒ/

cortege

Meaning
a solemn procession, especially for a funeral
Example
A cortege of mourners followed the hearse to the cemetery.
C2 adjective /ˈkrɛstˌfɔːlən/

crestfallen

Meaning
sad and disappointed
Example
He looked crestfallen after hearing the bad news.
B1 noun /ˈkɒkˌteɪl/

cocktail

Meaning
a mixed drink typically containing alcohol and other ingredients.
Example
She ordered a cocktail at the bar.
B2 noun /kɒt/

Cot

Meaning
a small bed, especially a portable one or one for a baby
Example
The baby sleeps peacefully in her cot.
C1 verb /kəˈpɪtjʊˌleɪt/

capitulate

Meaning
to surrender or give in after resisting
Example
The army had no choice but to capitulate to the enemy.
C1 verb /ˈsɪvɪlaɪz/

civilize

Meaning
to bring a society or group to a more developed, organized, or socially acceptable state; to educate and refine behavior
Example
Education can help civilize communities by promoting shared values and respect.
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.
A1 verb /ˈkæri/

carry

Meaning
To support and move something or someone from one place to another.
Example
She carried the bag across the street.
C2 noun /ˈkɒnsəvəˌtwɑː/

conservatoire

Meaning
A school specializing in the study of music or drama.
Example
She trained as a pianist at the Paris Conservatoire.
A1 verb /kʊk/

cook

Meaning
to prepare food by heating; to make food ready to eat
Example
My mother loves to cook traditional dishes.
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.
B2 noun /kənˈvɛn.ʃən.əl ˈfɑːr.mɪŋ/

conventional farming

Meaning
Traditional farming method using synthetic fertilizers, pesticides, and modern technology.
Example
Conventional farming increases crop production using fertilizers.
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.
C1 adjective kəʊˈhiː.sɪv

cohesive

Meaning
Characterized by or causing cohesion; forming a united whole.
Example
The team displayed a cohesive strategy.
C2 adjective /ˈkɒlərɪk/

choleric

Meaning
Easily angered; irritable and hot-tempered.
Example
His choleric nature often got him into arguments.
B1 noun ˌkɒn.səˈveɪ.ʃən

conservation

Meaning
The protection of plants and animals, natural areas, and interesting and important structures and buildings, especially from the damaging effects of human activity.
Example
Conservation of forests is crucial for climate stability.
C2 adjective /kənˈsʌmptɪv/

consumptive

Meaning
Relating to or characterized by consumption; historically used to describe someone suffering from tuberculosis.
Example
The doctor advised against consumptive habits.
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 noun /ˈkloʊðiər/

clothier

Meaning
a person or company that makes, sells, or deals in clothes.
Example
The town’s clothier displayed fine suits in his shop window.
C1 verb /siːd/

cede

Meaning
to give up power, territory, or rights to another
Example
The country ceded territory after losing the war.
B2 noun kəˈmɒd.ə.ti

commodity

Meaning
A raw material or primary agricultural product that can be bought and sold.
Example
Oil is a valuable commodity in the global market.
C1 noun /krɪpt/

crypt

Meaning
an underground chamber, especially one beneath a church, used as a burial place
Example
The tourists explored the ancient crypt beneath the cathedral.
C2 noun /ˌkɑːrt ˈblɑːnʃ/

carte blanche

Meaning
complete freedom to act as one wishes
Example
The manager gave her team carte blanche to design the project.
B2 verb /ˈkɒntəmpleɪt/

contemplate

Meaning
to think deeply and carefully about something; to consider thoughtfully
Example
She sat quietly to contemplate her future plans.
C2 noun/verb /ˈkætˌkɔːl/

catcall

Meaning
A loud whistle or shout of disapproval or sexual harassment directed at someone.
Example
The actress ignored the catcalls from the crowd.
B1 noun /ˈtʃiːtər/

cheater

Meaning
a person who cheats or acts dishonestly to gain an advantage
Example
He was caught and labeled as a cheater during the exam.
B2 noun ˈkɑː.bən

carbon

Meaning
The chemical element of atomic number 6, occurring as diamond, graphite, and charcoal.
Example
Carbon emissions must be controlled.
C2 adjective /ˈkæloʊ/

callow

Meaning
Inexperienced and immature.
Example
The callow intern made several mistakes on his first day.
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.
C1 noun /ˈkæptər/

captor

Meaning
a person or group who has captured someone or something
Example
The hostage managed to escape from his captors.
C1 adjective,noun /kənˈtɪn.dʒənt/

contingent

Meaning
dependent on something else; a group of people representing an organization
Example
Attendance is contingent on prior registration. / A contingent of students attended the conference.
B1 adjective /kənˈviː.ni.ənt/

Convenient

Meaning
fitting in well with a person's needs, activities, and plans; suitable and practical
Example
The new shopping mall is very convenient for our family.
B2 adjective /ˌkɒm.plɪˈmen.tər.i/

Complimentary

Meaning
expressing praise or admiration; given or supplied free of charge as a courtesy
Example
The hotel offers complimentary breakfast for all guests.
C2 adjective /kəˈdævərəs/

cadaverous

Meaning
Resembling a corpse; very pale, thin, or bony.
Example
His cadaverous appearance shocked everyone at the party.
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.
C2 noun /kəmˈpɒz.ɪ.tər/

Compositor

Meaning
a person who arranges type for printing or creates musical compositions
Example
The compositor carefully arranged the text for the newspaper.
C1 verb /ˈkætəˌlaɪz/

catalyze

Meaning
To cause or accelerate a reaction or change.
Example
The new law catalyzed reforms across the sector.
C1 adjective /kənˈspɪkjuəs/

conspicuous

Meaning
Easily noticeable; attracting attention due to being unusual or prominent.
Example
Her red dress made her conspicuous at the party.
B2 verb /kənˈstrʌkt/

construct

Meaning
to build or form something by putting parts together
Example
They plan to construct a new bridge over the river.
B2 adjective /kənˈtɛmpərɛri/

contemporary

Meaning
belonging to the same time period; modern
Example
She enjoys contemporary art exhibitions.
C1 adjective/noun /ˈkɜːrsɪv/

cursive

Meaning
Written with characters joined together in a flowing manner.
Example
The teacher asked students to write the essay in cursive handwriting.
B2 noun /ˈkaʊ.ərd/

Coward

Meaning
a person who lacks the courage to do or endure dangerous or unpleasant things
Example
He called himself a coward for not standing up to the bully.
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 adjective /ˌkɑːmənˈsɛnsɪkəl/

commonsensical

Meaning
based on or showing sound practical judgment; sensible
Example
It was commonsensical to carry an umbrella on a rainy day.