commemorate
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C1 verb /kəˈmɛmɔˌreɪt/

commemorate

Meaning
To honor and remember someone or something through a ceremony or action.
Example
The statue was built to commemorate the fallen heroes.
B2 verb kənˈdem

condemn

Meaning
To express complete disapproval of; to censure.
Example
The leaders condemned the actions as inhumane.
B2 verb /ˌkoʊ.ɪnˈsaɪd/

coincide

Meaning
To occur at the same time or to be in agreement.
Example
The meeting coincided with her birthday.
C2 verb /kənˈvɑːlv/

convolve

Meaning
to roll or twist together; to coil or entwine
Example
The vines convolve around the tree trunk.
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.
B1 noun /ˈklɪn.ɪk/

clinic

Meaning
A place where people receive medical treatment without staying overnight.
Example
She went to the clinic for a health check-up.
C2 verb /ˈkæn.tər/

canter

Meaning
To ride a horse at a controlled, easy pace between a trot and a gallop.
Example
She cantered her horse across the field with ease.
C2 verb /kəˈnoʊt/

connote

Meaning
To suggest or imply an additional meaning beyond the literal one.
Example
The word 'youthful' connotes energy and vitality.
B2 noun /ˌsɜːrtɪfɪˈkeɪʃən/

certification

Meaning
the process of officially recognizing or confirming that something or someone meets required standards; an official document proving qualification
Example
She received her professional certification after completing the training program.
C1 adjective /klænˈdɛstaɪn/

clandestine

Meaning
kept secret or done secretly, especially for illicit purposes
Example
They held a clandestine meeting late at night.
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.
C1 noun kəˈlɛktɪvɪzəm

collectivism

Meaning
The practice or principle of giving a group priority over each individual in it.
Example
Collectivism emphasizes the importance of group over individual interests.
C1 verb /ˌkaʊntərˈækt/

counteract

Meaning
to act against something in order to reduce its effect
Example
The medicine helps counteract the side effects of the treatment.
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 verb /koʊˈhæbɪt/

cohabit

Meaning
To live together, often as partners without being married.
Example
They decided to cohabit before getting married.
C1 noun /ˌkɒnfləˈɡreɪʃən/

conflagaration

Meaning
This is a common misspelling of 'conflagration', which means a large, destructive fire.
Example
The term 'conflagaration' is often incorrectly used instead of 'conflagration'.
C2 noun /ˈkʌlvərt/

culvert

Meaning
a tunnel or drain that carries water under a road or railway
Example
The heavy rainwater flowed through the culvert under the bridge.
C2 noun /ˈkrɪsəndəm/

christendom

Meaning
the worldwide body or community of Christians
Example
The news spread quickly across Christendom.
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 verb /klæsp/

clasp

Meaning
to grasp or hold tightly; also a device for fastening
Example
She clasped her hands together in prayer.
B1 verb /kənˈɡrætʃʊleɪt/

congratulate

Meaning
to praise someone for an achievement or for a special occasion
Example
I want to congratulate you on your promotion.
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.
A2 adverb /ˈsɜː.tən.li/

Certainly

Meaning
without doubt; definitely; used to agree or give permission
Example
I will certainly help you with this project.
A2 verb /kənˈtɪnjuː/

continue

Meaning
To keep happening, existing, or doing something without stopping.
Example
The rain will continue throughout the night.
A2 noun /koʊt/

Coat

Meaning
an outer garment worn over other clothes for warmth or protection
Example
He put on his winter coat before going outside.
C1 verb /ˈkætəˌlaɪz/

catalyze

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

centrifuge

Meaning
A machine that spins substances at high speed to separate different components.
Example
The lab technician used a centrifuge to separate the blood cells from the plasma.
B2 adjective /ˈkɒn.trər.i/

Contrary

Meaning
opposite in nature, direction, or meaning; completely different
Example
Contrary to popular belief, cats can be very social animals.
B1 adjective ˈkɒmplɛks

complex

Meaning
Having many interrelated parts or factors; complicated.
Example
The relationship between poverty and education is complex.
C1 noun /krəˈvæs/

crevasse

Meaning
a deep crack in a glacier or the earth’s surface
Example
The climbers carefully crossed the icy crevasse.
C1 noun /kliːk/

clique

Meaning
a small, exclusive group of people
Example
The students formed a clique that excluded others.
C2 adjective /krʌˈsteɪʃəs/

crustaceous

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

Centipede

Meaning
a long thin creature with many legs that lives in dark places
Example
I found a centipede crawling under the rock.
B2 noun /ˌkɒn.tɪˈnjuː.ɪ.ti/

continuity

Meaning
the state of being continuous or connected; consistency over time
Example
Maintaining continuity in leadership is essential for organizational stability.
C2 noun /kərˈmʌdʒən/

curmudgeon

Meaning
a bad-tempered, cranky, or irritable person, usually old
Example
The old curmudgeon complained about everything in the neighborhood.
B1 adverb /ˈkʌmftəbli/

Comfortably

Meaning
in a comfortable manner; without difficulty or effort; with ease
Example
She was sitting comfortably in her favorite chair.
C1 noun /kənˈsiːt/

conceit

Meaning
excessive pride in oneself; vanity
Example
His conceit made him unpopular among his colleagues.
A1 noun /ˈsɪti/

city

Meaning
a large town or an urban area with its own government
Example
Dhaka is the largest city in Bangladesh.
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.
B2 adjective /kəmˈpæʃənət/

Compassionate

Meaning
feeling or showing sympathy and concern for others who are suffering
Example
The compassionate nurse took extra time to comfort the worried patients.
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 /ˌkɒmpɪˈleɪʃən/

compilation

Meaning
a collection of things, especially pieces of writing or music, gathered together
Example
The book is a compilation of his best essays.
A2 adjective /ˈkjʊriəs/

curious

Meaning
Eager to know or learn something.
Example
The curious explorers asked questions about Antarctica.
B1 noun /ˈkæləri/

calorie

Meaning
A unit of energy, often used to measure the energy content of food and drink.
Example
She checks the calorie count before eating any packaged food.
B1 noun /ˈsɪtɪzənʃɪp/

citizenship

Meaning
the status of being a recognized member of a state or country, with rights and duties
Example
He applied for American citizenship after living there for ten years.
B2 noun /kreɪn/

Crane

Meaning
a large tall bird with long legs and neck; a machine for lifting heavy objects
Example
The graceful crane stood motionless by the water's edge.
C2 noun /kəmˈpɛndiəm/

compendium

Meaning
A collection of concise but detailed information about a subject.
Example
The book is a compendium of ancient myths and legends.
B2 noun /koʊˈɔːrdɪˌneɪtər/

coordinator

Meaning
a person who organizes people or activities so that they work well together
Example
The event coordinator managed everything perfectly.
B2 noun /kənˈkʌʃən/

concussion

Meaning
A temporary unconsciousness or shock caused by a blow to the head.
Example
He suffered a concussion after falling from the bike.
A2 adjective /ˈkreɪzi/

Crazy

Meaning
mentally ill; extremely foolish; wildly enthusiastic about something
Example
That's a crazy idea, but it might just work.
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.
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.
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.
A2 noun ˈkɜːrɪdʒ

courage

Meaning
The ability to do something that frightens one; bravery.
Example
Courage is essential in the face of challenges.
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.
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 adjective /ˈkʌsɪd/

cussed

Meaning
Annoyingly stubborn or difficult.
Example
He was too cussed to admit his mistake.
C2 adjective /ˈkɒs.ɪ.tɪd/

cosseted

Meaning
pampered, treated with excessive care and attention
Example
The cosseted child always got what he wanted.
B1 noun /ˈkɒtən/

cotton

Meaning
A soft white fibrous substance used to make cloth and thread.
Example
This shirt is made of pure cotton.
B2 adjective/verb /kəˈrʌpt/

corrupt

Meaning
dishonest or morally wrong; to make something impure or evil
Example
The politician was accused of corrupt practices.
B1 noun /kəʊst/

Coast

Meaning
the part of the land near the sea; the edge of the land
Example
We drove along the coast to enjoy the view.
C1 adjective, verb, noun /ˈkaʊntərfɪt/

counterfeit

Meaning
made to look like something genuine in order to deceive
Example
The police seized a batch of counterfeit currency.
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.
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.
C1 adjective /kənˈdʒiːniəl/

congenial

Meaning
pleasant and friendly because of having similar interests or qualities
Example
They found the café a congenial place to meet and talk.
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.
B1 noun /klɑːrk/

clerk

Meaning
A person employed in an office or bank to keep records, accounts, and undertake other routine administrative duties.
Example
The clerk helped me find the correct form.
B2 noun /ˈkɒk.roʊtʃ/

Cockroach

Meaning
a flat brown insect that is commonly found in kitchens and other warm places
Example
A cockroach ran across the kitchen floor quickly.
C1 verb /ˈklæmbər/

clamber

Meaning
to climb with effort or difficulty, often using both hands and feet
Example
The children clambered over the rocks to reach the cave.
C1 adjective kənˈkɝː.ənt

concurrent

Meaning
Existing, happening, or done at the same time.
Example
The conference had concurrent sessions on various topics.
C2 adjective /ˈkɒndaɪn/

condign

Meaning
deserved, appropriate, and fitting (especially punishment)
Example
The criminal received condign punishment for his crimes.
C1 adjective /ˈkɑːr.di.æk/

cardiac

Meaning
Relating to the heart.
Example
The patient was admitted with a cardiac condition.
C2 noun /ˈkɔːrmərənt/

cormorant

Meaning
a large black sea bird that catches fish by diving
Example
The cormorant perched on the rock, drying its wings after a dive.
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.
C2 adjective /ˈkʌmli/

comely

Meaning
Attractive or pleasant in appearance.
Example
The actress was known for her comely features.
B2 noun ˌkɒnsəlˈteɪʃən

consultation

Meaning
The action of consulting or discussing; a meeting with an expert or professional to seek advice.
Example
Consultation was essential.
A2 adjective /ˈkraʊdɪd/

crowded

Meaning
filled with too many people or things
Example
The bus was so crowded that I could hardly move.
B2 noun /ˈkrɪstəl/

crystal

Meaning
a clear, transparent mineral or glass that forms a solid structure with regular patterns
Example
She wore a necklace made of sparkling crystal.
C2 adjective ˈkoʊ.dʒənt

cogent

Meaning
Clear, logical, and convincing.
Example
His cogent argument convinced the jury.
C1 noun /ˈkælɪbər/

caliber

Meaning
The quality of someone's ability or character; the internal diameter of a gun barrel.
Example
The university attracts students of high caliber.
B2 adjective /kɒzˈmɛt.ɪk/

cosmetic

Meaning
relating to beauty or appearance; intended to improve looks
Example
She bought a new cosmetic cream for her skin.
B2 noun /ˈkɑː.bən ˈfʊt.prɪnt/

carbon footprint

Meaning
The amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.
Example
Reducing carbon footprint is essential for combating climate change.
A2 noun /kənˈtrəʊl/

control

Meaning
The power to influence or direct people's behavior or the course of events.
Example
Proper control measures are necessary.
B1 noun /ˈkær.ə.væn/

Caravan

Meaning
a group of people traveling together, especially through desert areas
Example
The merchant caravan crossed the desert with camels carrying precious goods.
A2 noun tʃɔɪs

choice

Meaning
An act of selecting or making a decision when faced with two or more possibilities.
Example
Choice enhances decision-making.
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.
B2 noun/verb /ˈkɒmplɪmənt/

complement

Meaning
something that completes or goes well with something; to add something that enhances or improves
Example
The scarf complements her outfit perfectly.
C2 adjective /kɔːrˈpɔːriəl/

corporeal

Meaning
relating to the physical body; material or tangible
Example
Ghosts are often described as having no corporeal form.
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 /kəˈprɪʃəs/

capricious

Meaning
given to sudden and unaccountable changes of mood or behavior
Example
The stock market can be capricious, shifting dramatically without warning.
A2 noun ˈtʃælɪndʒ

challenge

Meaning
A call to take part in a contest or competition, especially a demanding or stimulating one; a task or situation that tests someone's abilities.
Example
Plastic pollution poses a significant challenge to global health.
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.
C2 verb /ˈkʌzən/

cozen

Meaning
to deceive, cheat, or trick someone
Example
He cozened the old man out of his money.
B2 noun /ˈkruː.əl.ti/

Cruelty

Meaning
behavior that causes pain or suffering to others; the quality of being cruel
Example
The documentary exposed the cruelty of factory farming to animals.
C1 noun /kəmˈprɛʃn̩/

compression

Meaning
The act of pressing or squeezing something into a smaller space.
Example
File compression helps reduce storage requirements.
B2 verb /ˈklæsɪfaɪ/

classify

Meaning
to arrange or organize into categories or groups
Example
The librarian classified the books by subject.
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.
B2 noun /ˈkʌs.tə.mər rɪˈten.ʃən/

Customer Retention

Meaning
The ability of a company or product to retain its customers over some specified period.
Example
High customer retention increases business sustainability.
B2 adjective /ˈkɒmɪkəl/

comical

Meaning
Funny in a strange or silly way; amusing.
Example
His comical expressions made everyone laugh.
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.
C2 noun /ˈklævɪkəl/

clavicle

Meaning
the collarbone, a long bone that serves as a strut between the shoulder blade and the sternum
Example
He fractured his clavicle in the accident.
C2 noun, verb /ˈkæŋkər/

canker

Meaning
A fungal disease of plants; an ulcerous sore in the mouth; to corrupt or destroy slowly
Example
The tree was infected with a canker that damaged its bark.
C2 noun /kwɑːˈfjʊr/

coiffure

Meaning
A person's hairstyle, typically an elaborate one.
Example
Her elegant coiffure impressed everyone at the party.
B2 noun /kəˈθɒlɪsɪzəm/

catholicism

Meaning
The faith, practice, and church order of the Roman Catholic Church.
Example
Catholicism has a long history and rich traditions.
B1 noun /ˈtʃæmpiənʃɪp/

championship

Meaning
a competition to decide who is the best in a particular sport or activity.
Example
The championship will be held next month.
C1 noun/verb /kruːˈseɪd/

crusade

Meaning
a vigorous campaign for a social, political, or religious cause; to fight passionately for a cause
Example
She has been crusading for women's rights all her life.
C1 noun kənˈsɔː.ti.əm

consortium

Meaning
An association of several companies or organizations formed to undertake an enterprise beyond the resources of any one member.
Example
The consortium worked collaboratively to build the cable.
C2 noun /ˈkɒɡneɪt/

cognate

Meaning
a word related to another word in origin; having the same linguistic root
Example
The Spanish word 'madre' and the English word 'mother' are cognates.
C1 adjective /ˈtʃɛkərd/

chequered

Meaning
Having a pattern of squares, or marked by varied and contrasting experiences or periods.
Example
He had a chequered career with both great successes and failures.
A2 noun /ˈkʌp.bɔːrd/

Cupboard

Meaning
a piece of furniture with doors and shelves for storing dishes, food, or clothes
Example
She stored all the plates and bowls in the kitchen cupboard.
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 verb /ˈkælsɪfaɪ/

calcify

Meaning
To harden by deposition of calcium salts; to become rigid or inflexible.
Example
Over time, the tissue began to calcify and lose flexibility.
B1 adverb /ˈkeərləsli/

carelessly

Meaning
without care or attention; in a negligent or reckless manner
Example
He carelessly left the door unlocked.
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.
A2 adjective /ˈkɒm.ən/

common

Meaning
occurring frequently or widely; shared by all
Example
It is common to see traffic in the city during rush hour.
C1 verb /kɜːrˈteɪl/

curtail

Meaning
to reduce or limit something, especially something considered undesirable
Example
The company had to curtail its spending due to budget cuts.
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.
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.
A2 noun /koʊtʃ/

coach

Meaning
A person who helps improve others' skills or knowledge.
Example
The football coach motivated his team before the match.
C2 noun /ˌkæstɪˈɡeɪʃən/

castigation

Meaning
Severe criticism or punishment for wrongdoing.
Example
The manager’s harsh castigation shocked the entire team.
C2 verb /ˈkɒr.ʌ.skeɪt/

coruscate

Meaning
to sparkle or flash brightly
Example
The fireworks coruscated across the night sky.