crack
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B1 verb /kræk/

crack

Meaning
To break or cause to break without complete separation; to make a sharp sound.
Example
The glass cracked when it was dropped on the floor.
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.
B1 verb /kənˈsuːm/

consume

Meaning
to eat or drink; to use up; to destroy completely
Example
We consume a lot of water during summer.
B1 adjective /ˈkəʊstəl/

coastal

Meaning
relating to or near a coast or shoreline
Example
They built a resort in a coastal area.
C2 noun /səˈlɛrɪti/

celerity

Meaning
swiftness of movement; speed
Example
The soldier moved with great celerity to deliver the message.
C1 adjective sɪˈlɛstʃəl

celestial

Meaning
Positioned in or relating to the sky, or outer space as observed in astronomy.
Example
The celestial bodies in the sky were clearly visible last night.
A2 verb /kənˈsɪdər/

consider

Meaning
to think carefully about something, especially before making a decision
Example
She is considering studying abroad next year.
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 /ˈkoʊ.tə.ri/

coterie

Meaning
a small, exclusive group of people with shared interests
Example
He belonged to a coterie of artists who met every Friday.
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 noun /ˈkæmi.oʊ/

cameo

Meaning
a small but significant role in a play, film, or show, often performed by a well-known person
Example
The actor made a surprise cameo in the movie.
B2 noun kənˈtrækʃən

contraction

Meaning
The process of becoming smaller; a decrease in size or quantity.
Example
The economic contraction resulted in a rise in unemployment.
C2 adjective /kəˈnjuːbiəl/

connubial

Meaning
Relating to marriage or the relationship of a married couple.
Example
They celebrated their connubial bliss with a honeymoon trip.
C2 adjective /tʃeɪst/

Chaste

Meaning
pure and morally good; abstaining from sexual activity
Example
She lived a chaste and virtuous life.
C1 noun /ˈkɜːrlər/

curler

Meaning
A small roller used for curling hair.
Example
She used a curler to style her hair for the party.
B2 noun /ˈkɒmənˌtɛri/

commentary

Meaning
An expression of opinions or explanations about an event, situation, or text.
Example
The professor's commentary on the novel was insightful.
A2 adjective /ˈkʌlərfəl/

colorful

Meaning
having bright colors; full of variety or interest
Example
The festival was full of colorful decorations.
C2 noun /krɪpˈtɒɡ.rə.fi/

cryptography

Meaning
The practice of securing information through encryption or coding techniques
Example
Modern cryptography ensures secure online transactions.
C1 noun /kəˈmoʊʃən/

commotion

Meaning
A state of noisy confusion or disturbance.
Example
The sudden commotion in the market drew everyone's attention.
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.
B1 noun /kənˌɡrætʃəˈleɪʃən/

congratulation

Meaning
an expression of praise or joy for someone’s achievement or good fortune
Example
She sent a congratulation to her friend on winning the award.
C2 noun /ˈkɔːrpəskəl/

corpuscle

Meaning
a small particle or cell, especially a blood cell
Example
Red corpuscles carry oxygen throughout the body.
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.
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.
C1 adjective /kræs/

crass

Meaning
lacking sensitivity, refinement, or intelligence
Example
His crass remarks offended everyone at the meeting.
B2 noun /ˈkɑn.trəˌvɜr.si/

Controversy

Meaning
prolonged public disagreement or heated discussion; a dispute or argument involving opposing viewpoints
Example
The new policy sparked a major controversy among the citizens.
B2 verb kəˈlaɪd

collide

Meaning
Hit with force when moving; come into conflict or opposition.
Example
The two cars collided at the intersection.
B1 noun /tʃiːf/

chief

Meaning
a leader or person in charge of a group or organization
Example
The chief of the village made an important decision.
C2 noun /kənˈkɔːrdəns/

concordance

Meaning
Agreement; also an alphabetical index of the principal words in a book.
Example
There is a strong concordance between the two reports.
C1 verb /ˈkɒr.ə.leɪt/

correlate

Meaning
To have a mutual relationship or connection; to establish a relationship between two or more things.
Example
Researchers found that diet and mental health correlate strongly.
C2 noun /ˈkærɪt/

caret

Meaning
A proofreading symbol (^) used to indicate where something should be inserted.
Example
The editor placed a caret to show where the missing word should go.
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.
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.
C1 noun ˈkɑːr.bən ˌsiː.kwəˈstreɪ.ʃən

carbon sequestration

Meaning
The process of capture and long-term storage of atmospheric carbon dioxide to mitigate or defer global warming.
Example
Forests play a key role in carbon sequestration.
C1 noun /ˈkæn.dɚ/

candor

Meaning
The quality of being open, honest, and straightforward in speech or expression.
Example
She spoke with candor about the challenges she faced.
B1 noun /sɛl/

cell

Meaning
a small basic unit of life; or a small enclosed space like a prison room
Example
The prisoner was locked in a small cell.
C2 noun /kɒn.tɪˈɡjuː.ɪ.ti/

contiguity

Meaning
the state of being in direct contact or next to each other
Example
The contiguity of the two countries facilitates trade.
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.
A2 noun, adjective /ˈkrɪstʃən/

christian

Meaning
a person who follows the religion based on the teachings of Jesus Christ
Example
She is a devoted Christian who attends church every Sunday.
C2 noun /kɒɡˈnoʊmən/

cognomen

Meaning
A family name or surname; an additional name or nickname.
Example
His cognomen became widely known in literary circles.
B2 adjective /ˈsɛl.əˌbreɪ.tɪd/

celebrated

Meaning
Widely known and praised; famous for an achievement.
Example
He is a celebrated author in the field of literature.
A2 noun /ˈtʃer.i/

Cherry

Meaning
a small round red or black fruit with a hard seed inside
Example
She picked fresh cherries from the tree in her garden.
B2 noun /kəˈlɛstərɒl/

cholesterol

Meaning
a fatty substance found in the blood, high levels of which can cause health problems
Example
High cholesterol can increase the risk of heart disease.
B1 verb /tʃɒp/

chop

Meaning
to cut with a sharp tool; to cut into pieces
Example
She chops vegetables for dinner.
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.
B1 noun /ˈklaɪənt/

client

Meaning
A person or organization using the services of a professional or company.
Example
The lawyer met with her client to discuss the case.
A2 verb tʃeɪs

chase

Meaning
To pursue in order to catch or overtake; to follow rapidly or eagerly
Example
Don't chase two rabbits at once.
C2 noun /ˌkæv.əlˈkeɪd/

cavalcade

Meaning
a formal procession of people riding on horses or in vehicles
Example
The king’s arrival was marked by a grand cavalcade.
B2 noun /ˈklaɪ.mət əˌdæp.teɪ.ʃən/

climate adaptation

Meaning
The process of adjusting to current or expected climate change and its effects.
Example
Climate adaptation ensures resilience to change.
A2 adjective, noun /tʃaɪˈniːz/

chinese

Meaning
relating to China, its people, or its language
Example
We went to a Chinese restaurant last night.
C2 noun /ˈkjʊriˌoʊ/

curio

Meaning
a small unusual or interesting object, often collected for its rarity
Example
She bought a curio from the antique shop.
C2 adjective /ˌser.ɪˈməʊ.ni.əs/

ceremonious

Meaning
marked by formality, politeness, or strict observance of customs
Example
He gave her a ceremonious bow before entering the hall.
C1 adjective /ˈkɜːrsəri/

cursory

Meaning
Hasty and therefore not thorough or detailed.
Example
He gave the report only a cursory glance before the meeting.
B2 noun /kæf/

Calf

Meaning
a young cow or bull; young of various large mammals
Example
The calf stayed close to its mother.
C2 noun /krəˈnɒmɪtər/

chronometer

Meaning
An instrument for measuring time precisely, especially used in navigation.
Example
The sailor relied on the chronometer to determine his position at sea.
B2 noun ˌkɒn.ekˈtɪv.ɪ.ti

connectivity

Meaning
The state of being connected or interconnected; the capacity for the interconnection of platforms, systems, and applications.
Example
Improved connectivity boosts economic development.
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.
B2 adverb /ˈkɒnsɪkwəntli/

consequently

Meaning
as a result; therefore
Example
He didn’t study, and consequently he failed the exam.
C2 adjective /kənˈdʒɛktʃərəl/

conjectural

Meaning
based on guesswork or incomplete evidence rather than certain knowledge
Example
His explanation was purely conjectural and lacked proof.
C1 noun /kəmˈprɛʃn̩/

compression

Meaning
The act of pressing or squeezing something into a smaller space.
Example
File compression helps reduce storage requirements.
A2 noun /ˈkɒlɪdʒ/

college

Meaning
An educational institution where students study for degrees or professional qualifications.
Example
She hopes to attend college in the city next year.
C2 noun /kəˈmɛstɪbəl/

comestible

Meaning
An item of food that can be eaten.
Example
The picnic basket was full of delicious comestibles.
B2 noun kəmˈpet.ɪ.tɪv.nəs

competitiveness

Meaning
The quality of being as good as or better than others of a comparable nature; the ability to compete successfully.
Example
Competitiveness is vital for economic sustainability.
C1 adjective /kɔɪ/

coy

Meaning
reluctant to give details or reveal feelings; shy or reserved
Example
She gave a coy smile when asked about her plans.
C1 noun /ˌkɒn.stəˈleɪ.ʃən/

constellation

Meaning
a group of stars forming a recognizable pattern in the night sky
Example
Orion is one of the most famous constellations.
C1 noun /kəˈnʌn.drəm/

conundrum

Meaning
A complex problem or puzzle without an easy solution
Example
The ethical conundrum puzzled the researchers.
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 noun /ˈkɒnstənsi/

constancy

Meaning
the quality of being faithful and dependable
Example
Her constancy in friendship is admirable.
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.
B1 verb /kæst/

cast

Meaning
to throw; to choose actors for a play; to shape metal
Example
The fisherman casts his line into the water.
B2 noun kəˌlæbəˈreɪʃən

collaboration

Meaning
The action of working with someone to produce or create something
Example
International collaboration is necessary to fight pollution.
B2 noun /ˌsɜː.kjʊˈleɪ.ʃən/

circulation

Meaning
The movement of blood through the body, or the movement of any fluid through a closed system.
Example
Proper circulation ensures that oxygen and nutrients reach every cell.
B2 noun /tʃɔːr/

chore

Meaning
A routine task, especially a household duty.
Example
Washing the dishes is my least favorite chore.
C2 noun /ˈkriːdoʊ/

credo

Meaning
A statement of the beliefs or aims that guide someone's actions.
Example
Honesty has always been the central credo of his life.
C1 adjective /ˈtʃɛk.ərd/

checkered

Meaning
Having a pattern of alternating squares of different colors; also describing a past full of ups and downs or varied experiences.
Example
He had a checkered career with many highs and lows.
C2 noun/verb /ˈkʌdʒ.əl/

cudgel

Meaning
A short, thick stick used as a weapon; to beat with a cudgel.
Example
The guard used a cudgel to chase away the thief.
C2 adjective /koʊˈiːvəl/

coeval

Meaning
Having the same age, date of origin, or duration; contemporary.
Example
The philosopher was coeval with the rise of modern science.
B2 noun ˈkærɪktər dɪˈvɛləpmənt

character development

Meaning
The process of creating a believable character in fiction by giving the character depth and personality.
Example
The character development of Sydney Carton is profound.
B2 noun kənˈsen.səs

consensus

Meaning
A general agreement among all members of a group.
Example
Consensus was reached after long deliberation.
B1 adjective /kəˈmɪtɪd/

committed

Meaning
Dedicated and loyal to a cause, activity, or relationship.
Example
She is a committed teacher who cares deeply for her students.
C2 noun /kəˈdɛnzə/

cadenza

Meaning
An elaborate solo passage in a piece of music, usually near the end.
Example
The pianist performed a brilliant cadenza before the final movement.
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.
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.
B1 noun /ˈtʃɛərˌwʊmən/

chairwoman

Meaning
a woman who presides over a meeting, committee, or organization; a female leader of a board or council
Example
She was elected chairwoman of the company after years of experience.
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.
B1 noun /kɔːr/

core

Meaning
the central or most important part of something
Example
Honesty is at the core of their values.
C1 verb /ˈkænvəs/

canvass

Meaning
to solicit votes or opinions; to examine thoroughly; to discuss in detail
Example
They will canvass the neighborhood for votes.
C1 adjective /ˈkɒɡ.nɪ.zənt/

cognizant

Meaning
Having knowledge or being aware of something.
Example
He was cognizant of the risks before starting the project.
C2 adjective /ˈklæmərəs/

clamorous

Meaning
making a loud and confused noise; expressing strong demands noisily
Example
The clamorous audience demanded an encore from the band.
B2 noun /ˈklɒzɪt/

closet

Meaning
a small room or enclosed space used for storing clothes or other things
Example
She keeps her winter coats in the closet near the door.
C2 noun /ˈʃɑːrlətən/

charlatan

Meaning
a person who pretends to have knowledge or skills that they do not really possess; a fraud
Example
The so-called healer was exposed as a charlatan.
C2 adjective /ˈsɪlieɪtɪd/

ciliated

Meaning
Having minute hairlike projections (cilia) on the surface of cells or organisms.
Example
The ciliated cells in the respiratory tract help move mucus out of the lungs.
B2 verb /kəˈmɛnd/

commend

Meaning
to praise formally or officially
Example
The teacher commended the students for their hard work.
A2 noun /ˈkloʊðɪŋ/

clothing

Meaning
items worn to cover the body; apparel collectively
Example
Warm clothing is essential in winter.
C1 noun /ˈkɑːrtɪlɪdʒ/

cartilage

Meaning
A firm, flexible connective tissue found in various parts of the body such as joints, ear, and nose.
Example
The doctor explained that the injury damaged the cartilage in his knee.
A2 noun, verb /kɔɪn/

coin

Meaning
A flat piece of metal used as money; as a verb, to invent a new word or phrase.
Example
The government decided to coin a new term for the program.
C2 noun /ˌser.əˈbreɪ.ʃən/

cerebration

Meaning
the process of thinking or using the brain actively
Example
The lecture sparked intense cerebration among the students.
B1 adjective /kəmˈpetətɪv/

competitive

Meaning
relating to or characterized by competition; having a strong desire to win or be more successful
Example
She has a competitive spirit that drives her to excel.
C2 verb /kəˈriːn/

careen

Meaning
To move swiftly and in an uncontrolled way, especially in a specific direction.
Example
The car careened down the slippery road.
C2 adjective /sɛnˈsɔːriəs/

censorious

Meaning
severely critical of others
Example
She was always censorious about her colleagues' mistakes.
B2 noun /kəˈmiː.li.ən/

Chameleon

Meaning
a lizard that can change color to match its surroundings
Example
The chameleon changed its color from green to brown.
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.
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 noun ˈklaɪmət ˌrɛɡjʊˈleɪʃən

climate regulation

Meaning
The moderation of climate conditions through natural or artificial processes.
Example
Forests help in climate regulation by stabilizing local temperatures.
B2 verb /kənˈfaɪd/

confide

Meaning
To tell someone about a secret or private matter while trusting them not to repeat it.
Example
He confided his worries to his best friend.
B1 verb /kəˈmænd/

command

Meaning
to give an order authoritatively; to control or direct
Example
The general commanded the soldiers to move forward.
A2 noun /ˈkæb.ɪdʒ/

Cabbage

Meaning
a cultivated plant eaten as a vegetable, having thick green or purple leaves surrounding a spherical heart
Example
She chopped the fresh cabbage to make coleslaw for dinner.
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.
B2 adjective /ˈkaʊntləs/

countless

Meaning
too many to be counted; innumerable
Example
There are countless stars in the sky.
B1 noun kəˈmɪt.mənts

commitments

Meaning
Formal pledges or promises to do something, especially in terms of obligations or agreements.
Example
Global commitments to renewable energy are increasing.
C1 noun /ˈkliː.vər/

Cleaver

Meaning
a heavy knife with a broad blade used for chopping meat or vegetables
Example
The chef used a cleaver to chop the chicken bones.
C1 noun /kəˈluːʒən/

collusion

Meaning
A secret agreement or cooperation, especially for an illegal or dishonest purpose.
Example
There was evidence of collusion between the officials and the contractors.
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.
C1 noun/verb /ˈkætəpʌlt/

catapult

Meaning
A device for launching objects at high speed; to hurl or launch something suddenly.
Example
The invention catapulted him to international fame.
B2 noun /kəʊˌɔːdɪˈneɪʃən/

coordination

Meaning
the process of organizing different elements to work together effectively
Example
The coordination between the teams was flawless.
C2 verb /ˌkɒmənˈdɪə/

commandeer

Meaning
To take control or possession of something, often by force or authority.
Example
The soldiers commandeered the villagers’ homes during the war.
B2 noun/adjective /ˈkæpɪtəlɪst/

capitalist

Meaning
a person who supports or believes in capitalism; a wealthy business owner
Example
The capitalist believes in the freedom of the market.
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.
C2 adjective /ˈkɑːrpɪŋ/

carping

Meaning
continually complaining or finding fault in a petty way
Example
His carping attitude makes teamwork difficult.
B1 noun /ˈkaʊnti/

county

Meaning
A territorial division within a country, typically a region with its own local government.
Example
She grew up in a small county in northern England.
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.