chaperon
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C1 noun /ˈʃæpəroʊn/

chaperon

Meaning
An older person who accompanies and supervises young people in social situations.
Example
The teacher acted as a chaperon during the school dance.
C1 verb /dɪˈtɛst/

detest

Meaning
To dislike intensely or hate.
Example
I detest waking up early on weekends.
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.
C1 noun /ˈpɔɪ.nən.si/

poignancy

Meaning
the quality of evoking a keen sense of sadness or regret; emotionally touching
Example
The poignancy of the farewell brought tears to everyone's eyes.
C1 adjective /ˈspɑːrtn/

spartan

Meaning
showing simplicity and lack of luxury; austere
Example
He lived in a spartan room with just a bed and a chair.
C1 adverb /ˌðɛərˈɪn/

Therein

Meaning
in that place; in that respect
Example
The box contains many treasures, and therein lies its value.
C1 adjective /ˈdwɪndlɪŋ/

dwindling

Meaning
Gradually reducing in number, size, or strength.
Example
The villagers relied on dwindling water supplies.
C1 verb /səbˈsaɪd/

subside

Meaning
to become less intense, violent, or severe; to sink or fall to a lower level
Example
After the storm, the floodwaters began to subside.
C1 verb /rɪˈbʌt/

rebut

Meaning
to argue against or prove wrong; to refute
Example
The lawyer rebutted the false accusations with strong evidence.
C1 adjective /ˌhæpi ɡoʊ ˈlʌki/

happy-go-lucky

Meaning
cheerfully unconcerned about the future; carefree
Example
She has a happy-go-lucky attitude and never worries about tomorrow.
C1 adjective /ˈpæl.ɪd/

Pallid

Meaning
pale, especially because of poor health; lacking substance or vitality
Example
His pallid complexion showed signs of illness.
C1 noun /ˈpɜːrdʒəri/

perjury

Meaning
The offense of willfully telling an untruth in a court after taking an oath.
Example
She was convicted of perjury after giving false evidence.
C1 noun /ˌpɒl.iˈtek.nɪk/

polytechnic

Meaning
an educational institution offering practical and technical courses
Example
She studied engineering at a well-known polytechnic in her city.
C1 adjective ˌɪn.təˈstel.ər

interstellar

Meaning
Occurring or situated between stars.
Example
Scientists study interstellar travel possibilities.
C1 noun /ˈrɑːstər/

roster

Meaning
A list or plan showing people’s duties or times when they are scheduled.
Example
The manager updated the staff roster for next week.
C1 noun /ˈrɪdəns/

riddance

Meaning
The action of getting rid of something unwanted or unpleasant.
Example
His departure was considered a welcome riddance by the team.
C1 noun /ˌaɪ.diˈɒl.ə.dʒi/

ideology

Meaning
A system of ideas and ideals, especially one that forms the basis of economic or political theory and policy.
Example
Democracy is based on the ideology of freedom and equality.
C1 adjective /ˈɜːr.nɪst/

Earnest

Meaning
sincere; genuine; showing deep and serious conviction
Example
He made an earnest attempt to solve the problem.
C1 adjective ɪˈræt.ɪk

erratic

Meaning
Unpredictable and inconsistent; not even or regular in pattern or movement.
Example
His erratic behavior confused his colleagues.
C1 noun/verb /ˈvɑːrnɪʃ/

varnish

Meaning
A liquid that is applied to wood or other materials to form a hard, shiny surface; also to apply such a liquid.
Example
The carpenter varnished the table to give it a glossy finish.
C1 noun /ˌmɔːrəˈtɔːriəm/

moratorium

Meaning
A temporary suspension or delay of an activity, law, or obligation.
Example
The government announced a moratorium on new mining licenses.
C1 verb /lɜːrk/

lurk

Meaning
to remain hidden so as to wait for an opportunity to attack or observe
Example
A stranger lurked in the shadows.
C1 noun /ˈwiː.vər bɜːd/

Weaver bird

Meaning
a small bird that builds elaborate woven nests from grass and twigs
Example
The weaver bird skillfully constructs its intricate nest.
C1 noun /ʃɑːrd/

shard

Meaning
a broken piece of glass, metal, or pottery
Example
He cut his finger on a shard of glass.
C1 noun /ˈeɪ.peks/

apex

Meaning
The highest point or peak of something; the top or summit.
Example
He reached the apex of his career.
C1 verb /dɪsˈbænd/

disband

Meaning
to break up and stop functioning as a group or organization
Example
The club decided to disband after twenty years of activity.
C1 adjective /ˈɑːrɡjuəbl/

arguable

Meaning
open to debate or discussion; not certain and capable of being argued for or against
Example
It is arguable that technology has improved our quality of life.
C1 verb /fɔːrˈɡoʊ/

forgo

Meaning
to decide not to do or have something
Example
She decided to forgo dessert to maintain her diet.
C1 noun kɒɡˈnɪʃ.ən

cognition

Meaning
The mental action or process of acquiring knowledge and understanding through thought, experience, and the senses.
Example
Cognition plays a key role in learning.
C1 noun /səˈbraɪəti/

sobriety

Meaning
the state of being sober; self-restraint and seriousness
Example
He has maintained his sobriety for five years.
C1 noun /fɪˈnɛs/

finesse

Meaning
Subtlety and skill; refinement and delicacy in performance or artistry.
Example
The artist painted with great finesse.
C1 verb /nəˈsɛsɪteɪt/

necessitate

Meaning
To make something necessary or unavoidable.
Example
The heavy rains necessitated the cancellation of the event.
C1 adjective /ʌnˈmænɪdʒəbəl/

Unmanageable

Meaning
difficult or impossible to control or handle
Example
The large class became unmanageable without proper supervision.
C1 verb /ˌmɪsˌrɛprɪˈzɛnt/

misrepresent

Meaning
to give a false or misleading account of something
Example
The lawyer accused the witness of trying to misrepresent the facts.
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.
C1 adjective /spɑːrs/

sparse

Meaning
thinly scattered or distributed; not dense or abundant
Example
Vegetation was sparse in the desert.
C1 noun /nɑːtʃ/

notch

Meaning
A small cut or groove on the edge or surface of something; a level or degree of achievement.
Example
He carved a notch on the stick to mark the days.
C1 verb /ˈfɔːrfɪt/

forfeit

Meaning
to lose or give up something, usually as a penalty for wrongdoing
Example
He had to forfeit the match after breaking the rules.
C1 noun /ˌæn.əˈnɪm.ə.ti/

anonymity

Meaning
The state of being anonymous; having one's identity kept secret or unknown.
Example
Online anonymity protects users from cyber threats.
C1 noun/verb /θrɒŋ/

throng

Meaning
A large, densely packed crowd of people or animals; to fill or be present in a place in large numbers.
Example
Tourists thronged the streets during the festival.
C1 verb /ˈpɛtrɪfaɪ/

petrify

Meaning
to make someone so frightened that they are unable to move or think; to turn into stone
Example
The loud noise petrified the little child.
C1 noun /suˈpriː.mə.si/

Supremacy

Meaning
the state of being supreme; highest authority or power
Example
The country established naval supremacy in the region.
C1 adjective /rɪˈstreɪnd/

restrained

Meaning
characterized by reserve or self-control; held back
Example
Her restrained reaction surprised everyone.
C1 noun ˈtær.ɪf

tariff

Meaning
A tax or duty to be paid on a particular class of imports or exports.
Example
The government imposed high tariffs on luxury goods.
C1 adjective /ˈɔːdəˌtɔːri/

auditory

Meaning
Relating to the sense of hearing.
Example
The lecture was designed to enhance students' auditory learning skills.
C1 verb /ˈnʌlɪfaɪ/

nullify

Meaning
to make something legally invalid or ineffective
Example
The court decided to nullify the contract.
C1 adjective/noun nɪˈmɒn.ɪk

mnemonic

Meaning
Assisting or intended to assist memory; a device or technique to aid memory.
Example
A mnemonic device helps students remember complex concepts.
C1 noun/adjective /ˈbaɪ.ɡɒn/

bygone

Meaning
Something belonging to an earlier time; past and no longer existing.
Example
He often talks about the traditions of bygone days.
C1 noun /əbˈdʒɛktər/

objector

Meaning
a person who expresses opposition or disapproval to something
Example
The objector raised his concerns during the town meeting.
C1 noun /ˈlɪməˌziːn/

limousine

Meaning
a large, luxurious car driven by a chauffeur.
Example
The bride arrived in a white limousine.
C1 verb /rɪˈpʌls/

repulse

Meaning
to drive back an attack or attacker by force; to cause intense dislike or disgust
Example
The army managed to repulse the enemy attack.
C1 noun /ˈfɔːrˌθɔːt/

forethought

Meaning
careful consideration of what will be necessary or may happen in the future
Example
With a little forethought, we could have avoided the problem.
C1 adjective /ˌaʊt əv ðə ˈweɪ/

out-of-the-way

Meaning
remote or unusual; not in a convenient or usual location
Example
They stayed in an out-of-the-way village.
C1 verb /klæsp/

clasp

Meaning
to grasp or hold tightly; also a device for fastening
Example
She clasped her hands together in prayer.
C1 noun /ˌpɜːrspəˈreɪʃn/

perspiration

Meaning
The process of sweating.
Example
Heavy exercise causes perspiration.
C1 noun ˈvɜːmɪn

vermin

Meaning
Small harmful animals or insects that are difficult to control and carry disease.
Example
The house was infested with vermin, requiring immediate action.
C1 adjective + noun ˌpaɪəˈnɪərɪŋ ˈmɪʃən

pioneering mission

Meaning
A groundbreaking or innovative undertaking that leads the way in a particular field.
Example
Artemis is a pioneering mission in space exploration.
C1 noun /ˈænəɡræm/

anagram

Meaning
A word or phrase formed by rearranging the letters of another word or phrase.
Example
The word 'listen' is an anagram of 'silent'.
C1 noun /naɪˈiːvɪti/

naivety

Meaning
The quality of being innocent, simple, and lacking experience or sophistication.
Example
Her naivety made her trust people too easily.
C1 verb /ˈsmoʊldər/

smolder

Meaning
to burn slowly with smoke but no flame; to show suppressed anger or emotion
Example
The fire smoldered for hours before it went out.
C1 noun /ˈdʒɛntri/

gentry

Meaning
People of good social position, usually of high birth or wealthy landowners
Example
The gentry of the town gathered for the annual ball.
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.
C1 verb /ˈpæmpər/

pamper

Meaning
to treat with excessive care and attention; to spoil
Example
Parents often pamper their first child.
C1 noun /lɒft/

loft

Meaning
An upper room or space, often under the roof of a building.
Example
She converted the old loft into a modern studio.
C1 verb /aʊtˈlɪv/

outlive

Meaning
to live longer than someone or something else
Example
She outlived all her siblings.
C1 adjective /frəˈtɜːrnəl/

fraternal

Meaning
Relating to brothers or brotherhood; friendly and supportive.
Example
The two nations maintain a fraternal relationship.
C1 noun /fəˈnætɪsɪzəm/

fanaticism

Meaning
the quality of being fanatical; extreme zeal or obsession
Example
Religious fanaticism can lead to intolerance and conflict.
C1 adjective /ˌʌnkɒnstɪˈtuːʃənəl/

Unconstitutional

Meaning
not in accordance with a political constitution; violating constitutional principles
Example
The court declared the new law unconstitutional.
C1 noun /məˈræŋ/

meringue

Meaning
A light dessert topping made from whipped egg whites and sugar.
Example
She decorated the pie with a fluffy meringue topping.
C1 verb /ˈskʌr.i/

scurry

Meaning
To move quickly with short, hurried steps.
Example
The mice scurried across the kitchen floor when the lights turned on.
C1 noun /krʌks/

crux

Meaning
the most important or decisive point of an issue
Example
The crux of the problem lies in poor communication.
C1 noun /ˌætəˈʃeɪ/

attache

Meaning
A person officially assigned to the staff of a diplomatic mission, often with a specific area of responsibility.
Example
The cultural attache organized an art exhibition in the embassy.
C1 verb /sɪˈkluːd/

seclude

Meaning
To keep someone away from other people; to isolate.
Example
The monk chose to seclude himself in the mountains.
C1 adjective /dɪˈreɪndʒd/

deranged

Meaning
mentally disturbed or insane; behaving irrationally
Example
The deranged man shouted nonsense in the street.
C1 adjective /əbˈzɜːrvənt/

Observant

Meaning
quick to notice things; watchful; attentive
Example
The observant detective noticed every small detail at the crime scene.
C1 adjective ˈtæs.ɪt

tacit

Meaning
Understood or implied without being openly expressed or stated
Example
Their mutual understanding was based on tacit agreement.
C1 adjective /ˈzoʊ.nəl/

Zonal

Meaning
relating to or arranged in zones; of, relating to, or having the form of a zone
Example
The city implemented a zonal parking system to manage traffic congestion.
C1 verb /əˈflɪkt/

afflict

Meaning
to cause pain, suffering, or distress to someone or something
Example
Many people are afflicted by seasonal allergies.
C1 adjective, noun /ɪnˈdɪkətɪv/

indicative

Meaning
Serving as a sign or expression of something; in grammar, a mood used to make factual statements.
Example
His tone was indicative of his frustration.
C1 adjective /kəmˈpensətɔːri/

compensatory

Meaning
serving to make up for a loss, damage, or injury
Example
The court awarded him compensatory damages.
C1 noun /ɪˌlæbəˈreɪʃən/

elaboration

Meaning
the process of adding more detail or expanding on something
Example
The teacher appreciated the student's elaboration of the topic.
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 /ˌpærəˈdɒksɪkəl/

paradoxical

Meaning
Seemingly contradictory or opposed to common sense, yet possibly true.
Example
It is paradoxical that standing is often more tiring than walking.
C1 noun ˈɛksəʊˌplænɪt

exoplanet

Meaning
A planet that orbits a star outside the solar system.
Example
Astronomers have discovered thousands of exoplanets in the last decade.
C1 verb /ɪkˈspend/

expend

Meaning
to use up or consume; to spend energy or resources
Example
He expended all his energy on the project.
C1 noun /treɪd fəˌsɪl.ɪˈteɪ.ʃən/

trade facilitation

Meaning
The simplification, modernization and harmonization of export and import processes.
Example
Trade facilitation boosts economic growth.
C1 adjective /prɪˈsɪpɪtəs/

precipitous

Meaning
Extremely steep or sudden; done quickly without careful consideration.
Example
The hikers struggled to climb the precipitous slope.
C1 noun /ˈmɒnəˌθiːɪzəm/

monotheism

Meaning
The belief in the existence of only one God.
Example
Islam and Christianity are religions based on monotheism.
C1 noun /ˈkʌvənənt/

covenant

Meaning
a formal agreement or promise, often legally binding
Example
The landlord and tenant signed a covenant to maintain the property.
C1 verb /ˌkɒntrəˈviːn/

contravene

Meaning
to go against or act in opposition to a law, rule, or agreement
Example
He contravened the safety regulations and was fined.
C1 noun /krʌˈsteɪʃən/

crustacean

Meaning
an aquatic animal with a hard shell, such as crabs, lobsters, and shrimps
Example
Crabs and lobsters are well-known crustaceans.
C1 noun /ˈsæŋk.ʃən/

Sanction

Meaning
official permission or approval; a penalty for disobeying a rule
Example
The government imposed economic sanctions on the country.
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 ˈhaɪ.drə.dʒən ˈpaʊ.əd bʌsɪz

hydrogen-powered buses

Meaning
Buses powered by hydrogen fuel cells that produce only water vapor as emission.
Example
Hydrogen-powered buses reduce air pollution.
C1 verb /ˈdɛprɪˌkeɪt/

deprecate

Meaning
to express disapproval of something
Example
The teacher deprecated the use of slang in academic essays.
C1 noun /ɪnˈdaɪtmənt/

indictment

Meaning
a formal charge or accusation of a serious crime
Example
The indictment accused the company of multiple violations.
C1 noun /wɪm/

whim

Meaning
a sudden or unpredictable idea, desire, or decision
Example
She bought the dress on a whim.
C1 noun /ˈʌlsər/

ulcer

Meaning
a sore on the skin or a mucous membrane that does not heal easily
Example
The doctor prescribed medicine to treat the stomach ulcer.
C1 noun /ˈplez.ən.tri/

Pleasantry

Meaning
a remark made in order to be polite or friendly; light conversation or jokes
Example
They exchanged pleasantries before the meeting began.
C1 noun /səˈvɪləti/

civility

Meaning
Polite and courteous behavior.
Example
He treated his opponent with civility despite their differences.
C1 verb /ˈkriːmeɪt/

cremate

Meaning
to burn a dead body to ashes as a funeral rite
Example
According to his wishes, they cremated his body after the funeral.
C1 noun moʊst ˈvʌlnərəbəl ˈneɪʃən

most vulnerable nation

Meaning
A country that is highly exposed to risks and lacks adequate protection or resilience.
Example
Bangladesh is one of the most vulnerable nations to climate change.
C1 noun/verb /ˈɪnsɛns/

incense

Meaning
a substance burned for its sweet smell (noun); to make very angry (verb)
Example
The smell of incense filled the temple, but his rude words incensed her.
C1 verb /ˈmæsəkər/

massacre

Meaning
to kill a large number of people brutally; to defeat decisively
Example
The army massacred the innocent civilians.
C1 adjective /ˈdestatəʊt/

Destitute

Meaning
extremely poor; without money or possessions
Example
Many families became destitute after the economic collapse.
C1 adjective ˈdɪs.pər.ət

disparate

Meaning
containing elements very different from one another.
Example
Their opinions were disparate, leading to debates.
C1 noun /fəˈtæləti/

fatality

Meaning
An occurrence of death by accident, disaster, or violence.
Example
The accident resulted in one fatality.
C1 noun sɪˈmɛntɪd ɡreɪv

cemented grave

Meaning
A grave that is constructed with cement for permanence.
Example
The cemented grave of the martyrs was seen near the river.
C1 noun /ˈiːzl̩/

easel

Meaning
a frame for supporting an artist's canvas while painting or drawing
Example
The artist placed the canvas on the easel before starting to paint.
C1 verb /ɪkˈspaʊnd/

expound

Meaning
to present and explain in detail
Example
The professor expounded the theory in simple terms.
C1 noun /ˈskaʊndrəl/

scoundrel

Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
C1 adjective əˈblɪv.i.əs

oblivious

Meaning
Being completely unaware of surrounding events.
Example
He was oblivious to the noise around him while reading.
C1 adjective /ʌnˈɒnəd/

unhonoured

Meaning
not respected or given the recognition that is deserved; treated without honor
Example
He felt unhonoured after his years of service were ignored.
C1 verb /dɪˈsɛkt/

dissect

Meaning
to cut apart an animal, plant, or other organism to study its internal parts; to analyze something in detail
Example
In biology class, students had to dissect a frog to learn about its anatomy.
C1 adjective /ˈmɔːtəl/

Mortal

Meaning
subject to death; having a limited lifespan; human
Example
All human beings are mortal and will eventually die.
C1 verb /əˈfɪliˌeɪt/

affiliate

Meaning
to officially attach or connect (a group or organization) to a larger body
Example
The school is affiliated with the local university.
C1 adjective /ɪˈluːsɪv/

elusive

Meaning
Difficult to find, catch, or achieve; hard to understand or define.
Example
The solution to the problem proved elusive.
C1 noun /bəˈnɛv.ə.ləns/

benevolence

Meaning
The quality of being well meaning and kindly; the disposition to do good.
Example
His benevolence towards the poor earned him respect.
C1 adjective /ˌoʊvərˈbɛrɪŋ/

overbearing

Meaning
unpleasantly or arrogantly domineering
Example
His overbearing attitude made everyone uncomfortable.
C1 adjective ˌmæk.roʊ.iː.kəˈnɒm.ɪk

macroeconomic

Meaning
Relating to the large-scale or general economic factors, such as interest rates and national productivity.
Example
Government policies impact macroeconomic stability.
C1 noun /ˈlɔːsuːt/

lawsuit

Meaning
a legal case brought to a court of law by one person against another
Example
The company faced a lawsuit over false advertising.