rarefy
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C2 verb /ˈreə.rɪ.faɪ/

rarefy

Meaning
To make something less dense or more refined.
Example
The air rarefies as you climb higher into the mountains.
B2 noun /ɪnˈveɪʒən/

invasion

Meaning
An instance of invading a country, region, or personal space with armed force or unwelcome presence.
Example
The army prepared for the possibility of an invasion.
B2 noun ˈiː.kəʊˌsɪs.təm

ecosystem

Meaning
A biological community of interacting organisms and their physical environment.
Example
A balanced ecosystem is crucial for environmental sustainability.
A1 adjective /ˈwʌndərfəl/

wonderful

Meaning
extremely good or impressive
Example
She had a wonderful time at the party.
C1 adjective /ɪnˈdiːsənt/

indecent

Meaning
not conforming to accepted standards of behavior or morality; improper or offensive
Example
He was warned for making an indecent remark during the meeting.
C2 adjective /ˈnɔɪ.səm/

Noisome

Meaning
having an extremely offensive smell; harmful or unpleasant
Example
The noisome smell from the garbage made everyone cover their noses.
B1 adjective /kənˈtɪn.ju.əs/

continuous

Meaning
forming an unbroken whole; without interruption
Example
The factory operates on a continuous 24-hour schedule.
B2 noun ˈsoʊʃəl rɪˌspɒnsəˈbɪləti

social responsibility

Meaning
The duty to act in ways that benefit society as a whole.
Example
Social responsibility should be part of the education curriculum.
C1 adjective /rɪˈsɪ.prə.kəl/

Reciprocal

Meaning
given or done in return; mutual; shared equally by both parties;
Example
The two countries have a reciprocal trade agreement.
C2 adjective /ˈɑːbdjʊrət/

obdurate

Meaning
Stubbornly refusing to change one's opinion or course of action.
Example
He remained obdurate despite everyone's pleas.
C1 noun /ˈdʒɔːn.dɪs/

jaundice

Meaning
A medical condition in which the skin and eyes become yellow due to liver problems.
Example
The doctor diagnosed the baby with jaundice.
B2 verb /reɪn/

reign

Meaning
to rule as a king or queen; to be dominant
Example
The queen reigned for over sixty years.
B2 noun /nɪˌɡoʊ.siˈeɪ.ʃən/

Negotiation

Meaning
discussion aimed at reaching an agreement; bargaining
Example
The negotiation between the two companies lasted for weeks.
C1 adjective /ˈɡruːsəm/

gruesome

Meaning
Causing horror or disgust.
Example
The police discovered a gruesome crime scene.
C1 verb /ˈmɑːrʃəl/

marshal

Meaning
To arrange or organize people, events, or resources in an orderly way.
Example
The teacher marshaled the students for the field trip.
C1 noun dɪˈsʌɪsɪvnɪs

decisiveness

Meaning
The ability to make decisions quickly and effectively.
Example
His decisiveness during the crisis saved the company.
C1 adjective /dɪˈsperɪŋ/

Despairing

Meaning
feeling hopeless; in despair
Example
She felt despairing after losing her job.
C1 adjective /ˈnɔɪz.ləs/

Noiseless

Meaning
making no sound; completely silent
Example
She moved through the house in noiseless steps so as not to wake the baby.
C2 noun /ˈɡɔːntlɪt/

gauntlet

Meaning
a protective glove; a challenge or trial; to 'throw down the gauntlet' means to issue a challenge
Example
The knight threw down his gauntlet as a sign of challenge.
B2 noun /ɪnˈtɛnt/

intent

Meaning
the purpose or reason behind an action; a strong determination to do something
Example
Her intent was to improve the quality of education in the community.
C2 adjective /ˌmækɪəˈvɛliən/

machiavellian

Meaning
cunning, scheming, and unscrupulous, especially in politics or in advancing one's career
Example
The politician was known for his Machiavellian tactics.
C1 noun əˌkred.ɪˈteɪ.ʃən

accreditation

Meaning
The action or process of officially recognizing someone or something as having a particular status or being qualified to perform a particular activity.
Example
Accreditation ensures institutional credibility.
C2 verb /ˈhʊdwɪŋk/

hoodwink

Meaning
To deceive or trick someone.
Example
The scammer hoodwinked many people with false promises.
C1 adjective /ˌhaɪdroʊɪˈlɛktrɪk/

hydroelectric

Meaning
Relating to or denoting the generation of electricity using flowing water.
Example
The country invested heavily in hydroelectric power plants.
B2 noun fɪkst ˈɪnkʌm

fixed income

Meaning
Investment that provides a return in the form of fixed periodic payments.
Example
Fixed income investments provide reliable returns.
B2 adjective /ˌʌnkənˈvɪnsɪŋ/

Unconvincing

Meaning
failing to persuade or impress; not believable or credible
Example
His excuse for being late was completely unconvincing.
C2 adjective /prɪˈhɛnsɪbəl/

prehensible

Meaning
capable of being grasped or seized
Example
The tool has a prehensible handle that improves safety.
B2 adjective /ˈheɪsti/

Hasty

Meaning
done or acting with excessive speed or urgency; hurried
Example
Don't make hasty decisions when you're angry.
B2 verb /ɛksˈheɪl/

exhale

Meaning
to breathe out air from the lungs
Example
She slowly exhaled after holding her breath.
B2 noun/verb /dɪˈvɔːrs/

divorce

Meaning
the legal ending of a marriage; to officially end a marriage
Example
After years of conflict, they decided to get a divorce.
C2 noun /ˌdaɪələˈtɪʃən/

dialectician

Meaning
A person skilled in dialectic or logical argument.
Example
Socrates is often considered the greatest dialectician in history.
B2 noun /ˈɑːrkaɪvz/

archives

Meaning
A place or collection where historical records and documents are stored.
Example
She visited the national archives to research her family history.
C2 adjective /ˌmɛrəˈtrɪʃəs/

meretricious

Meaning
apparently attractive but having no real value or integrity.
Example
The design was flashy but meretricious.
C1 adjective /məˈdʒen.tə/

Magenta

Meaning
a bright purplish-red color
Example
She wore a beautiful magenta dress to the party.
C1 noun /rɪˈteɪnər/

retainer

Meaning
a fee paid in advance to secure someone's services, or a device that holds something in place
Example
The lawyer asked for a retainer before taking the case.
B2 verb /ˈflʌrɪʃ/

flourish

Meaning
To grow or develop in a healthy or successful way.
Example
Her business began to flourish after she introduced online sales.
B2 adjective /saʊər/

Sour

Meaning
having an acid taste like lemon or vinegar; unpleasant or disagreeable
Example
The milk has gone sour and smells terrible.
B1 noun /ˈsʌb.ɜːb/

Suburb

Meaning
a residential area outside the central part of a city; an outlying district of a city
Example
They moved to a quiet suburb to raise their children away from city noise.
B2 noun /fɔːrt/

Fort

Meaning
a strong building or group of buildings where soldiers live and defend
Example
The ancient fort stood on top of the hill for centuries.
B2 adverb /ˌɪndəˈrɛktli/

indirectly

Meaning
in a way that is not direct; through an intermediate means or influence
Example
The policy affected small businesses indirectly.
B2 verb /smæʃ/

smash

Meaning
to break something into pieces violently
Example
She smashed the glass in frustration.
B1 noun /ˈtaɪmɪŋ/

timing

Meaning
the choice, judgment, or control of when something should be done
Example
Good timing is essential in business negotiations.
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.
C2 noun /voʊˈsɪfərəns/

vociferance

Meaning
the act of shouting or making a loud outcry
Example
The vociferance of the protesters filled the streets.
C2 adjective /rɪˈdjuːsəbl̩/

reducible

Meaning
capable of being simplified, lessened, or made smaller
Example
The problem is complex but reducible to a few basic principles.
C1 noun /pəˈnæʃ/

panache

Meaning
Flamboyant confidence of style or manner; distinctive and stylish elegance.
Example
He delivered his speech with great panache.
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
B2 noun /ˈzɪɡzæɡ/

Zigzag

Meaning
a line or course having abrupt alternate right and left turns; a pattern of sharp turns
Example
The road follows a zigzag pattern up the mountain.
B1 noun ɪˈnɪʃətɪvz

initiatives

Meaning
Actions or strategies designed to resolve a difficulty or improve a situation; programs or projects.
Example
Community initiatives benefit underprivileged groups.
B1 adjective /ˈæn.ju.əl/

annual

Meaning
happening once every year
Example
The company holds an annual meeting for all its shareholders.
B1 noun /ˌpɜr.sənˈæl.ə.ti/

Personality

Meaning
the combination of characteristics that form an individual's distinctive character; a famous person
Example
She has a very outgoing and friendly personality.
B1 noun /ˈkɒnflɪkt/

conflict

Meaning
A serious disagreement or argument, often a prolonged one.
Example
The two countries are trying to resolve the conflict through negotiations.
B2 verb /straɪv/

strive

Meaning
To make great efforts to achieve or obtain something.
Example
She strives to be the best student in her class.
A2 adjective /ruːd/

Rude

Meaning
impolite; discourteous; lacking civility; rough or harsh in manner
Example
It was rude of him to interrupt the meeting.
C1 noun /ˈpær.ə.kiːt/

Parakeet

Meaning
a small colorful parrot with a long tail, often kept as a pet
Example
The green parakeet learned to say hello.
B2 verb /ˈɪntɪɡreɪt/

integrate

Meaning
To combine or bring together into a unified whole.
Example
The new system integrates data from multiple sources.
C1 noun /səˈnɑːtə/

sonata

Meaning
A musical composition for one or more instruments, typically in several movements.
Example
She performed a beautiful Beethoven sonata on the piano.
B1 adverb /ˈpɜːfɪktli/

perfectly

Meaning
in a perfect manner; without flaws
Example
She performed the task perfectly.
B2 adjective /kəˈreɪdʒəs/

Courageous

Meaning
brave; fearless; showing courage in the face of danger
Example
The courageous firefighter rescued the family from the burning building.
B1 verb /ɪnˈstɔːl/

install

Meaning
To place or fix equipment or software so it is ready for use.
Example
He installed the new software on his computer.
B2 adjective /ʌnˈsteɪbəl/

Unstable

Meaning
likely to change; not steady or secure; unsteady
Example
The unstable economy made people worried about their jobs.
B2 noun /træŋˈkwɪləti/

tranquility

Meaning
the quality or state of being calm and peaceful
Example
He enjoyed the tranquility of the countryside.
A2 noun ˈprəʊ.ses

process

Meaning
A series of actions or steps taken in order to achieve a particular end.
Example
Recruitment involves a three-stage process.
C1 noun /ˈwɪzərdri/

wizardry

Meaning
The art or practice of magic; great skill or expertise in something.
Example
The programmer's wizardry amazed everyone in the room.
C1 verb /ˌriːˈtʌtʃ/

retouch

Meaning
To improve or repair a picture, photograph, or image by making small changes.
Example
The photographer retouched the image to remove blemishes.
B1 noun pɔːrt

Port

Meaning
A town or city with a harbor where ships load or unload.
Example
Ports improve maritime trade.
B2 adjective /aɪˈrɒnɪkəl/

ironical

Meaning
expressing irony; having the nature of irony
Example
Her ironical tone made everyone uncomfortable.
C2 adjective /ˈtʃɛəri/

chary

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

papacy

Meaning
The office or authority of the Pope in the Roman Catholic Church.
Example
The papacy played a significant role in medieval European politics.
C2 verb /ˈrɔɪstər/

roister

Meaning
to revel noisily; to engage in loud, boisterous celebration
Example
The fans roistered in the streets after the victory.
A2 adjective /ˈfɔːrən/ or /ˈfɑːrən/

foreign

Meaning
Belonging to or coming from another country.
Example
She loves studying foreign languages.
C2 adjective, noun /pləˈbiːən/

plebian

Meaning
alternate spelling of 'plebeian'; common or ordinary
Example
His tastes were rather plebian, favoring simple food and clothes.
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 /ˌpliːnɪpəˈtɛnʃəri/

plenipotentiary

Meaning
a person invested with full power to act on behalf of another, especially in diplomacy
Example
The ambassador was a plenipotentiary sent to negotiate the treaty.
C2 verb /dɪˈspɒnd/

despond

Meaning
to lose confidence or hope; to become dejected
Example
After repeated failures, he began to despond.
C1 noun /ˈdʒuː.və.naɪl/

Juvenile

Meaning
a young person below the age of adult criminal responsibility; relating to young people
Example
The juvenile court handles cases involving young offenders under eighteen.
A2 noun /ˈmʌʃ.ruːm/

Mushroom

Meaning
a type of fungus that can be eaten, often used in cooking
Example
The pizza was topped with fresh mushrooms.
C2 noun /ˈɑːriə/

aria

Meaning
a solo vocal piece with instrumental accompaniment, typically in an opera
Example
The soprano performed a moving aria during the second act.
B2 noun ˈhæb.ɪ.tæts

habitats

Meaning
The natural home or environment of an animal, plant, or other organism.
Example
Scientists envision habitats on the Moon.
A1 adjective /ˈhʌŋɡri/

Hungry

Meaning
feeling the need for food; having a strong desire or craving
Example
I am very hungry after working all day.
C1 noun /ˈklæmər/

clamor

Meaning
a loud and confused noise, especially of people shouting insistently
Example
The clamor of the protesting crowd filled the square.
B1 verb /ʃuːt/

shoot

Meaning
to fire a bullet or arrow from a weapon; to take a photograph or film
Example
He learned how to shoot a bow and arrow.
B2 noun məˈtæb.əl.ɪ.zəm

metabolism

Meaning
The chemical processes that occur within a living organism in order to maintain life.
Example
Exercise boosts metabolism and burns calories.
C2 noun /ˌætəlˈjeɪ/

atelier

Meaning
A workshop or studio, especially for an artist or designer.
Example
The painter invited us to his atelier to view his new collection.
A2 noun /dʒæm/

Jam

Meaning
a sweet spread made from fruit and sugar; a difficult situation; a blockage
Example
She spread strawberry jam on her toast for breakfast every morning.
B1 noun /ˈæbsəns/

Absence

Meaning
the state of being away from a place or person; lack or non-existence
Example
His absence from the meeting was noticed by everyone.
C2 adjective /ɔːˈɡʌst/

august

Meaning
Respected and impressive; inspiring reverence or admiration.
Example
The king entered the hall with an august presence.
C2 noun /ɪnˈkʌmbrəns/

encumbrance

Meaning
a burden or obstacle that makes progress or movement difficult
Example
Debt can become a serious encumbrance in life.
B2 verb (phrasal) /ˈpæs ˌɔːf/

pass-off

Meaning
to present something or someone falsely as something else; to pretend or deceive
Example
He tried to pass off the fake watch as a luxury brand.
B1 noun /bʌɡ/

Bug

Meaning
a small insect; a defect in a computer program
Example
I found a bug crawling on my bed sheets.
C1 noun /ˈæl.ɪ.moʊ.ni/

alimony

Meaning
financial support that a person is ordered by a court to give to their spouse after separation or divorce
Example
He was ordered by the court to pay monthly alimony to his ex-wife.
C1 noun /ˌkæm.əˈrɑː.dɚ.i/

camaraderie

Meaning
Mutual trust and friendship among people who spend a lot of time together.
Example
The camaraderie among teammates was inspiring.
C2 noun /ˈpɒm.əl/

pommel

Meaning
the rounded knob on the handle of a sword or saddle
Example
He gripped the sword firmly by the pommel.
A1 verb /tiːtʃ/

teach

Meaning
to give knowledge or instruction to someone; to show how to do something
Example
She teaches English at the local school.
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.
B1 noun /pɑːrˌtɪsɪˈpeɪʃən/

participation

Meaning
the action of taking part in something
Example
Her participation in the competition was commendable.
C2 noun /ɪˈlɪksər/

elixir

Meaning
A magical or medicinal potion believed to cure illnesses or grant immortality.
Example
The old legend spoke of an elixir that could grant eternal youth.
C2 verb /ˈseɪʃiˌeɪt/

satiate

Meaning
To satisfy fully, especially with food or desire.
Example
The large meal satiated his hunger.
C2 verb /ruː/

rue

Meaning
To feel regret or sorrow about something.
Example
She will rue the day she trusted him.
C2 verb /ˈdiːfælˌkeɪt/

defalcate

Meaning
to misuse or embezzle money that one is responsible for
Example
The accountant was accused of defalcating company funds.
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 adjective /ˈfiːlaɪn/

feline

Meaning
relating to or characteristic of cats
Example
Her movements were graceful and almost feline in their elegance.
A2 adjective /ˈnɔː.məl/

Normal

Meaning
usual; typical; conforming to a standard; healthy
Example
It's normal to feel nervous before an important exam.
B2 adjective /ˈnær.ə.tɪv/

Narrative

Meaning
relating to storytelling; descriptive; telling a story; recounting events
Example
The narrative structure of the novel was quite complex.
C1 adjective /ˌɪnstənˈteɪniəs/

instantaneous

Meaning
Happening immediately, without any delay.
Example
The change in temperature was almost instantaneous.
A1 adverb /ˈɔːlsoʊ/

also

Meaning
in addition; too
Example
She sings beautifully and also plays the guitar.
A2 adjective /ˈɑːnɪst/

honest

Meaning
free of deceit and untruthfulness; sincere
Example
She is known as an honest and trustworthy person.
C1 noun /ˈɔːtəkræt/

autocrat

Meaning
A ruler with absolute power.
Example
The autocrat controlled the country with an iron fist.
C1 verb /ˈskruː.tɪ.naɪz/

scrutinize

Meaning
Examine or inspect closely and thoroughly.
Example
The scientist scrutinized the data before publishing his findings.
B2 adverb /kənˈsɪdərəbli/

Considerably

Meaning
to a notably large degree; significantly; substantially
Example
The price has increased considerably over the past year.
C1 noun /ˈmɜːrsəˌnɛri/

mercenary

Meaning
a professional soldier hired to serve in a foreign army; also used to describe someone motivated solely by money.
Example
The mercenary fought for whoever paid the highest wage.
C1 noun /ˈrɛ.trəʊ.fɪt.ɪŋ/

retrofitting

Meaning
The addition of new technology or features to older systems.
Example
The building underwent retrofitting to meet new safety standards.
C2 adjective /ˈtʃɜːrlɪʃ/

churlish

Meaning
Rude in a mean-spirited and surly way.
Example
It would be churlish to refuse her kind invitation.
C1 verb /rɪˈpiːl/

repeal

Meaning
To officially cancel or revoke a law or decision.
Example
The government decided to repeal the outdated law.
B2 noun /ˈsɑːrdʒənt/

sergeant

Meaning
A rank of non-commissioned officer in the armed forces or police.
Example
The sergeant gave orders to the soldiers before the mission.
C2 noun /rʌmp/

Rump

Meaning
the hindquarters or buttocks; the lower back area
Example
The horse injured its rump during the fall.
B1 adjective /ˈbrɪliənt/

brilliant

Meaning
Exceptionally clever, talented, or impressive; very bright or radiant.
Example
She gave a brilliant performance on stage.
C2 adjective /ˈmiːzli/

measly

Meaning
contemptibly small or insignificant
Example
He was paid a measly sum for the hard work.
C2 noun /ɡlʌt/

glut

Meaning
An excessive supply of something; more than is needed.
Example
There was a glut of cheap smartphones in the market.
C2 adjective /rɪˈflɛktɪbəl/

reflectible

Meaning
capable of being reflected, as light or an image
Example
The surface of the lake is highly reflectible in the morning sun.
B2 noun /ˈmɪnərəl/

mineral

Meaning
a naturally occurring substance that is solid and inorganic, often used in industry or nutrition
Example
Calcium is an important mineral for strong bones.