convolution
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C2 noun /ˌkɒnvəˈluːʃən/

convolution

Meaning
a twist, coil, or a complex and intricate shape or arrangement
Example
The brain has many convolutions that increase its surface area.
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.
C2 verb /ˈtʃeɪ.sən/

chasten

Meaning
to correct or discipline; to humble or subdue
Example
The coach chastened the team after their poor performance.
C2 noun /səˈlɛrɪti/

celerity

Meaning
swiftness of movement; speed
Example
The soldier moved with great celerity to deliver the message.
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.
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.
C2 noun ˌkɒdʒɪˈteɪʃən

cogitation

Meaning
The action of thinking deeply about something; contemplation
Example
After much cogitation, he made the final decision.
C2 noun /ˈsɜːrtɪˌtjuːd/

certitude

Meaning
Absolute certainty or conviction about something.
Example
She spoke with certitude about the outcome of the case.
C2 noun /ˈkɒntrətɑː̃/

contretemps

Meaning
an unexpected and unfortunate event or disagreement; a minor dispute
Example
There was a small contretemps between the two colleagues during the meeting.
C2 adjective /ˌkɒnsæŋˈɡwɪniəs/

consanguineous

Meaning
Related by blood; descended from the same ancestor.
Example
The study focused on genetic disorders in consanguineous families.
C2 noun /kəˈdʒoʊləri/

cajolery

Meaning
Flattering or coaxing talk intended to persuade someone.
Example
Through cajolery, he convinced his boss to grant him a raise.
C2 noun /kroʊn/

crone

Meaning
An old woman, often one who is thin and ugly, sometimes associated with witch-like qualities.
Example
The children were scared by the story of the wicked crone in the forest.
C2 noun /klaɪm/

clime

Meaning
A region defined by its climate.
Example
He traveled to warmer climes during the winter.
C2 noun /ˈkɒŋ.ɡru.əns/

congruence

Meaning
Harmony, compatibility and agreement between different elements.
Example
The congruence between their ideas made collaboration easy.
C2 noun /kəˌmɒd.ɪ.fɪˈkeɪ.ʃən/

commodification

Meaning
The transformation of goods, services, ideas, or social relations into market commodities.
Example
The commodification of education has increased tuition costs.
C2 adjective kaɪˈmɛr.ɪ.kəl

chimerical

Meaning
Illusory or impossible to achieve; existing only in imagination.
Example
His chimerical ideas often baffled realists.
C2 noun /ˈkærɪlɒn/

carillon

Meaning
A set of bells played using a keyboard, usually in a tower.
Example
The carillon bells rang across the town square.
C2 noun /kəˈleɪʃən/

collation

Meaning
the act of collecting, comparing, and arranging in proper order
Example
The librarian spent hours on the collation of old manuscripts.
C2 noun /kənˈtjuː.ʒən/

contusion

Meaning
a bruise or injury without breaking the skin
Example
The boxer had several contusions after the match.
C2 verb /kəˈnoʊt/

connote

Meaning
To suggest or imply an additional meaning beyond the literal one.
Example
The word 'youthful' connotes energy and vitality.
C2 noun /ˈtʃɜː.nɪŋ stɪk/

Churning stick

Meaning
a wooden stick used for stirring and churning butter, milk, or other liquids
Example
Grandmother used a churning stick to make fresh butter.
C2 verb /kəmˈpɔːrt/

comport

Meaning
to behave or conduct oneself in a particular way
Example
She comported herself with grace during the ceremony.
C2 noun /kɒŋk/

Conch

Meaning
a large sea shell that can be used as a horn; the marine mollusk that lives in such a shell
Example
The fisherman blew the conch shell to signal the end of the day.
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.
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.
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.
C2 noun /ˌkælɪsˈθɛnɪks/

calisthenics

Meaning
exercises that use body weight for strength and flexibility
Example
She practices calisthenics every morning in the park.
C2 noun /kəˈrɑːləri/

corollary

Meaning
a direct or natural consequence or result
Example
One corollary of the new policy was increased public awareness.
C2 adjective /ˈkæp.ʃəs/

Captious

Meaning
tending to find fault or raise petty objections; fault-finding; critical
Example
His captious remarks about every small detail made the meeting very unpleasant.
C2 verb /ˈkævəl/

cavil

Meaning
to make petty or unnecessary objections
Example
She caviled at every detail of the plan.
C2 verb /kənˈdjuːs/

conduce

Meaning
To help bring about a particular result; to contribute to something.
Example
Regular exercise conduces to better health.
C2 noun /ˈkeɪ.nə.naɪt/

canaanite

Meaning
a member of a people who lived in the ancient land of Canaan in the Middle East
Example
The Canaanites were known for their advanced trade networks.
C2 noun /ˈkætəˌklɪzəm/

cataclysm

Meaning
A sudden and violent event that causes great destruction or upheaval.
Example
The earthquake was a cataclysm that reshaped the city.
C2 noun /kəˈbɑl/

Cabal

Meaning
a secret political clique or faction
Example
The journalists exposed a cabal of corrupt politicians working together.
C2 noun /kənˈtrɪʃ.ən/

contrition

Meaning
the state of feeling remorseful and repentant
Example
His contrition was evident after the apology.
C2 adjective /kəˈnaɪ.vɪŋ/

conniving

Meaning
secretly scheming or plotting to help in wrongdoing
Example
He is a conniving politician who manipulates people for power.
C2 noun /ˈklɪpər/

clipper

Meaning
a tool used for cutting, or a fast sailing ship of the 19th century
Example
The barber used clippers to trim his hair.
C2 verb /kruːn/

croon

Meaning
to sing or hum in a soft, low, and gentle voice
Example
She crooned a lullaby to help the baby fall asleep.
C2 verb /ʧeɪf/

chafe

Meaning
To make or become sore by rubbing; to feel irritation or impatience.
Example
The tight shoes began to chafe his heels.
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.
C2 adjective /ˈkɔːpjʊlənt/

corpulent

Meaning
fat or obese; having a large bulky body
Example
The corpulent man struggled to fit into the small chair.
C2 adjective /sɛnˈtrɪfjʊɡəl/

centrifugal

Meaning
Moving or tending to move away from a center.
Example
The centrifugal force pushes the clothes to the sides of the washing machine.
C2 verb /ˈkɒdʒɪteɪt/

cogitate

Meaning
to think deeply about something; to meditate or reflect
Example
He sat by the river to cogitate on his future plans.
C2 noun /kɒzˈmɒɡ.rə.fi/

cosmography

Meaning
the science or art of mapping the universe or cosmos
Example
Medieval scholars practiced cosmography to chart the stars and planets.
C2 noun/verb /ˈkɜːrtsi/

curtsy

Meaning
a respectful bow made by women by bending the knees with one foot in front of the other
Example
She gave a quick curtsy before leaving the stage.
C2 noun /ˈtʃæt.əl/

chattel

Meaning
a personal possession; historically, movable property including slaves
Example
In the past, slaves were considered the chattel of their owners.
C2 noun /ˈkɑr.mɪn/

Carmine

Meaning
a vivid crimson color; a red pigment obtained from cochineal
Example
The artist mixed carmine with white to create a beautiful pink shade.
C2 noun /kənˈtraɪ.vəns/

contrivance

Meaning
a device or plan that is cleverly or artificially created
Example
The clock was an intricate contrivance of gears and springs.
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.
C2 noun /ˈsɪɡnət/

cygnet

Meaning
a young swan
Example
The cygnet swam closely behind its mother.
C2 adjective /kəmˈprɛsəbl̩/

compressible

Meaning
Capable of being compressed or reduced in volume.
Example
Air is a compressible substance, unlike water.
C2 noun /ˈsaɪ.nəˌʃʊr/

cynosure

Meaning
A person or thing that is the center of attention or admiration.
Example
She was the cynosure of all eyes at the party.
C2 noun /ˈkæbəˌlɪzəm/

cabalism

Meaning
The doctrines, practices, or secretive dealings of a cabal.
Example
The historian wrote extensively about cabalism in the royal court.
C2 noun /ˈsɜːrklət/

circlet

Meaning
A small circular band, typically worn as an ornament on the head.
Example
The princess wore a golden circlet on her forehead.
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.
C2 adjective /ˈkjʊərətɪv/

curative

Meaning
Able to cure disease or restore health.
Example
The doctor prescribed a curative treatment for the illness.
C2 noun /kaɪˈmɪərə/

chimera

Meaning
A mythical creature with parts from different animals; also used to mean a fanciful illusion or unattainable dream.
Example
The idea of a perfect society is often a chimera.
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.
C2 verb /kædʒ/

cadge

Meaning
To beg or obtain something, especially food or money, without paying for it.
Example
He tried to cadge a free meal from the restaurant.
C2 adjective /kəˈmoʊdiəs/

commodious

Meaning
spacious and comfortable; having plenty of room
Example
They rented a commodious apartment in the city.
C2 noun /ˈʃɛvrən/

chevron

Meaning
A V-shaped pattern, often used in military insignia or design.
Example
The sergeant’s uniform displayed three chevrons on the sleeve.
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.
C2 noun/adjective /ˈsaɪklɔɪd/

cycloid

Meaning
a curve traced by a point on the rim of a circle as it rolls along a straight line
Example
The cycloid is often studied in mathematics and physics.
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.
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.
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 noun /ˈkɒn.tjʊ.mə.li/

contumely

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

Canna

Meaning
a tropical flowering plant with large, colorful flowers and broad leaves
Example
The bright orange canna lilies grew tall beside the pond.
C2 noun /ˈkɒn.tjʊ.mə.si/

contumacy

Meaning
stubborn refusal to obey authority
Example
His contumacy led to his suspension from the council.
C2 noun /ˈklærɪən/

Clarion

Meaning
a shrill narrow-tubed war trumpet; a medieval trumpet with a clear piercing tone
Example
The clarion sounded across the battlefield to signal the charge.
C2 noun /kərˈmʌdʒən/

curmudgeon

Meaning
a bad-tempered, cranky, or irritable person, usually old
Example
The old curmudgeon complained about everything in the neighborhood.
C2 noun /ˈkɒŋ.kɔː.dæt/

concordat

Meaning
An agreement or treaty, especially between the Vatican and a secular government.
Example
The concordat established the rights of the church within the country.
C2 verb /kənˈvoʊk/

convoke

Meaning
to call together or summon a meeting or assembly
Example
The committee convoked an emergency session to discuss the crisis.
C2 verb /kənˈvʌls/

convulse

Meaning
to shake violently; to suffer sudden involuntary contractions
Example
The patient convulsed during the seizure.
C2 noun /kɔˈrɪkə soˈbɔrnə/

Corica soborna

Meaning
a small silvery fish species found in South Asian rivers, commonly used in local cuisine
Example
Corica soborna is a popular ingredient in traditional Bengali fish curry.
C2 noun /ˌkʌmˈʌpəns/

comeuppance

Meaning
A deserved punishment or fate; just deserts.
Example
The corrupt official finally got his comeuppance in court.
C2 noun /ˈkæl.əm.ni/

Calumny

Meaning
the making of false and defamatory statements about someone in order to damage their reputation
Example
The politician sued the newspaper for spreading calumny about his personal life.
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.
C2 noun /ˈkætɪtʃuː/

Catechu

Meaning
an extract from a tropical Asian plant, used in tanning and dyeing
Example
Catechu extract is commonly used in traditional medicine.
C2 verb /kɒnˈkætəneɪt/

concatenate

Meaning
To link things together in a series or chain.
Example
The program concatenates two strings into one.
C2 noun /ˈkʌvən/

coven

Meaning
a group or gathering of witches
Example
The witches met secretly in a coven in the forest.
C2 adjective /ˈkoʊməˌtoʊs/

comatose

Meaning
In a state of deep unconsciousness, resembling or related to coma.
Example
The comatose patient was kept under constant observation.
C2 noun /ˈkreɪniəm/

cranium

Meaning
the skull, especially the part enclosing the brain
Example
The archaeologists carefully examined the ancient cranium.
C2 adjective /ˈkoʊltɪʃ/

coltish

Meaning
Playful, energetic, and not fully mature or disciplined.
Example
The coltish boy ran around the field without a care.
C2 noun /ˈkloʊtʃər/

cloture

Meaning
a procedure for ending a debate and taking a vote.
Example
The Senate invoked cloture to end the lengthy debate.
C2 adjective /ˈkreɪvən/

craven

Meaning
cowardly; lacking courage
Example
He was too craven to stand up for his beliefs.
C2 noun ˌsaɪ.bəˈnet.ɪks

cybernetics

Meaning
The science of communications and automatic control systems in both machines and living things.
Example
Cybernetics plays a crucial role in artificial intelligence.
C2 noun /kəmˈpleɪsəns/

complaisance

Meaning
willingness to please others; courteous compliance
Example
Her complaisance made her popular among her colleagues.
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.
C2 noun /ˌkæt ə ˈnaɪn ˌteɪlz/

cat-o-nine-tails

Meaning
A whip with nine knotted cords, historically used for punishment.
Example
The sailor feared the cat-o-nine-tails more than the storm at sea.
C2 adjective /ˌkɒn.tjʊˈmeɪ.ʃəs/

contumacious

Meaning
stubbornly disobedient or rebellious
Example
The contumacious student refused to follow the school rules.
C2 noun, verb /ˈkaʊntərˌtʃɑːrdʒ/

countercharge

Meaning
an opposing charge or accusation; to make an opposing attack
Example
The lawyer filed a countercharge against the accuser.
C2 noun /ˈkɔːrsər/

courser

Meaning
a swift horse or a hunting horse
Example
The knight rode a fast courser into battle.
C2 noun, adjective /klɛərˈvɔɪənt/

clairvoyant

Meaning
a person who claims to have clairvoyance; having the ability to see beyond normal senses
Example
The clairvoyant predicted that she would travel abroad soon.
C2 adjective /ˌkæləˈrɪfɪk/

calorific

Meaning
Relating to the amount of energy contained in food or fuel.
Example
Chocolate is highly calorific, so it should be eaten in moderation.
C2 noun /kɪˈrɒpədɪst/

chiropodist

Meaning
A healthcare professional who diagnoses and treats foot problems.
Example
The chiropodist treated her painful corns and calluses.
C2 adjective /ˈtʃɜːrlɪʃ/

churlish

Meaning
Rude in a mean-spirited and surly way.
Example
It would be churlish to refuse her kind invitation.
C2 verb /kəˈvɔrt/

cavort

Meaning
to jump or dance around excitedly
Example
The children cavorted happily in the garden.
C2 adjective /ˈkɒnfluənt/

confluent

Meaning
Flowing together or merging; coming together at one point.
Example
The confluent streams formed a mighty river.
C2 noun /ˌkɒnfəˈriː/

conferee

Meaning
a person who takes part in a conference
Example
Each conferee received a badge at the registration desk.
C2 noun /kiˌɑːrəˈskjʊəroʊ/

chiaroscuro

Meaning
The use of strong contrasts between light and dark in art or literature to create a dramatic effect.
Example
The artist's painting used chiaroscuro to highlight the figure's face.
C2 noun /ˌkæstɪˈɡeɪʃən/

castigation

Meaning
Severe criticism or punishment for wrongdoing.
Example
The manager’s harsh castigation shocked the entire team.
C2 noun /ˈtʃælɪs/

chalice

Meaning
A large cup or goblet, typically used for drinking wine in religious ceremonies.
Example
The priest lifted the golden chalice during the ceremony.
C2 noun /kɒŋk/

Conck

Meaning
a shell, especially a large spiral one used as a horn or for decoration
Example
The priest blew the conch shell to signal the start of the ceremony.
C2 noun /kəˈlɒsəs/

colossus

Meaning
A person or thing of enormous size, importance, or ability.
Example
Einstein was a colossus in the world of science.
C2 noun /ˈkæt.aɪ.ɒn ɪksˌtʃeɪndʒ/

cation-exchange

Meaning
A chemical process in soil that helps retain nutrients.
Example
The cation-exchange capacity of soil affects plant growth.
C2 noun /ˌkæθəˈlɪsɪti/

catholicity

Meaning
Universality; broad-mindedness; acceptance of a wide variety of things.
Example
Her catholicity of interests makes her a fascinating person.
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.
C2 noun /ʃəˈɡrɪn/

chagrin

Meaning
Distress or embarrassment at having failed or been humiliated.
Example
She left the room in chagrin after forgetting her lines.
C2 adjective /ˈtʃɛəri/

chary

Meaning
cautious or wary about doing something
Example
She was chary of investing in the new business venture.
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.
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.
C2 adjective /ˈkʌvətəs/

covetous

Meaning
having or showing a strong desire for someone else's possessions
Example
She gave him a covetous look when he showed his new watch.
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 verb /kənˈtjuːz/

contuse

Meaning
to bruise by striking or hitting
Example
He contused his arm when he fell off the bike.
C2 verb /kɔːk/

calk

Meaning
To make a boat or ship watertight by filling seams or cracks.
Example
The workers calked the seams of the old boat to prevent leaks.
C2 verb /ˌkɒntrəˈvɜːrt/

controvert

Meaning
to dispute or argue against; to contradict
Example
The scientist controversed the previous research findings.
C2 noun /ˈkrɪptəɡræm/

cryptogram

Meaning
a text written in code or cipher
Example
The detective solved the cryptogram hidden in the letter.
C2 noun /ˈklɔɪstər/

cloister

Meaning
a covered walk in a convent, monastery, or cathedral, typically with a wall on one side and a colonnade open to a quadrangle on the other.
Example
The monks walked silently through the cloister.
C2 verb /kənˈdʒiːl/

congeal

Meaning
to become thick or solid, especially from cooling
Example
The soup began to congeal after being left on the table.
C2 adjective /ˈkrɒtʃ.ə.ti/

crotchety

Meaning
bad-tempered, easily annoyed, and often complaining
Example
The crotchety old man yelled at the children for playing near his house.