depletion
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C1 noun dɪˈpliː.ʃən

depletion

Meaning
The gradual reduction or exhaustion of a resource or substance.
Example
Overuse of groundwater leads to depletion of water resources.
C1 verb /ɪkˈspaʊnd/

expound

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

posterity

Meaning
All future generations of people.
Example
The monument was built for the benefit of posterity.
C1 noun /ˈklɛmənsi/

clemency

Meaning
mercy, leniency, or forgiveness shown towards someone
Example
The judge showed clemency and reduced his sentence.
C1 adjective /ˌnɒnˈvɜː.bəl/

non-verbal

Meaning
Not involving or using words or speech; communicated through gestures, body language, or facial expressions.
Example
Non-verbal cues are just as important as words.
C1 adjective /dɪˈskrɪmɪˌneɪtɪŋ/

discriminating

Meaning
Having refined taste or good judgment; able to recognize subtle differences.
Example
She is known for her discriminating taste in art.
C1 adjective /ˌsaɪkəˈpæθɪk/

psychopathic

Meaning
Relating to or affected by psychopathy; showing chronic mental disorder with abnormal or violent behavior.
Example
The film portrayed a psychopathic killer with no sense of empathy.
C1 adjective /əˈblaɪdʒɪŋ/

obliging

Meaning
Willing to help or do favors; accommodating.
Example
The staff at the hotel were very obliging and friendly.
C1 noun /ˈiːɡoʊˌɪzəm/

egoism

Meaning
An ethical theory that treats self-interest as the foundation of morality; also, excessive preoccupation with oneself.
Example
His decisions were often driven by egoism rather than concern for others.
C1 noun /krʊk/

crook

Meaning
a dishonest person, especially a criminal
Example
The police finally caught the crook who had been stealing cars.
C1 adjective /ˈpɪt.i.ləs/

pitiless

Meaning
showing no pity or compassion; cruel
Example
The pitiless ruler ignored the suffering of his people.
C1 noun /kəˈθɑːrsɪs/

catharsis

Meaning
The process of releasing strong emotions, providing relief.
Example
Writing in her diary was a form of catharsis for her.
C1 noun /ˌpæl.pɪˈteɪ.ʃən/

Palpitation

Meaning
a noticeably rapid, strong, or irregular heartbeat due to agitation or medical condition
Example
She experienced palpitations before her job interview.
C1 verb /dɪˈspɜːrs/

disperse

Meaning
To scatter or spread widely in different directions.
Example
The police used tear gas to disperse the crowd.
C1 adjective /trænsˈluːsənt/

translucent

Meaning
allowing light to pass through, but not clearly enough to see detailed images
Example
She placed the flower in a translucent vase.
C1 adjective /ˈdɔːr.mənt/

Dormant

Meaning
inactive; sleeping; temporarily suspended; not currently active
Example
The volcano has been dormant for over a century.
C1 adjective /ˌʌndərˈsaɪzd/

undersized

Meaning
Smaller than the usual or expected size.
Example
The undersized puppy struggled to keep up with its siblings.
C1 noun /ˈæl.kə.laɪ/

alkali

Meaning
a soluble base substance, typically with a pH greater than 7, that neutralizes acids
Example
Soap contains alkali which helps remove grease.
C1 noun /ˈiːkwɪnɒks/

equinox

Meaning
The time or date when day and night are of equal length, occurring twice a year.
Example
The spring equinox marks the beginning of longer days.
C1 adjective /kənˈsɪliətɔːri/

conciliatory

Meaning
intended to make someone less angry or more agreeable; soothing
Example
She spoke in a conciliatory tone to ease the tension.
C1 noun /ˈpɛndjələm/

pendulum

Meaning
A weight suspended from a pivot so that it swings freely, often used to regulate clocks.
Example
The pendulum swung back and forth inside the clock.
C1 adjective /ˈeɪmləs/

Aimless

Meaning
without purpose or direction; lacking a goal
Example
He wandered around the city in an aimless manner.
C1 adjective /ˌhɑːrdˈhɑːrtɪd/

hard-hearted

Meaning
showing no kindness or sympathy; cruel
Example
The landlord was hard-hearted and refused to help the poor family.
C1 verb /ˈstaɪfl/

stifle

Meaning
to prevent or restrain an action, idea, or emotion; to suffocate
Example
She tried to stifle a laugh during the serious meeting.
C1 verb /wɛt/

whet

Meaning
To sharpen the blade of a tool or to stimulate interest or appetite.
Example
The smell of food whetted my appetite.
C1 noun /kəˈmoʊʃən/

commotion

Meaning
A state of noisy confusion or disturbance.
Example
The sudden commotion in the market drew everyone's attention.
C1 adjective /ɪnˈsɪstənt/

insistent

Meaning
demanding something firmly and refusing to accept no
Example
The child was insistent on getting a new toy.
C1 verb /əˈdʒɔɪn/

adjoin

Meaning
To be next to and joined with something.
Example
Their house adjoins the park.
C1 adjective /ˈbɑːmi/

balmy

Meaning
Mild and pleasantly warm; soothing.
Example
We enjoyed a walk on a balmy summer evening.
C1 noun /ˈfɔːrˌbɛərz/

forebears

Meaning
Ancestors or people in previous generations from whom one is descended.
Example
We must honor the traditions of our forebears.
C1 noun ˌdep.əˈzɪʃ.ən

deposition

Meaning
The action of depositing something; the laying down of matter by a natural process.
Example
River deposition leads to the formation of new landmasses.
C1 noun ænˈtɪk.wə.ti

antiquity

Meaning
The ancient past, especially the period of classical and other human civilizations before the Middle Ages.
Example
The ruins are a reminder of the city's antiquity.
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.
C1 noun /ˈkrɛvɪs/

crevice

Meaning
a narrow crack or opening, especially in a rock or wall
Example
The lizard hid in a crevice between the stones.
C1 verb /ɪnˈfjʊərieɪt/

infuriate

Meaning
To make someone extremely angry.
Example
His careless remarks infuriated the entire team.
C1 noun /ˈkɒləmnɪst/

columnist

Meaning
a journalist who regularly writes articles or opinions for a newspaper or magazine
Example
The columnist wrote an article about climate change.
C1 noun /dʌsk/

Dusk

Meaning
the period of the day when daylight is fading; twilight
Example
They walked along the beach during dusk, watching the sunset.
C1 noun ɪˌlæˈstɪs.ə.ti

elasticity

Meaning
The responsiveness of demand or supply to changes in price.
Example
The elasticity of demand for luxury goods is high.
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
C1 noun /ˈɪntərˌpleɪ/

interplay

Meaning
The way in which two or more things have an effect on each other.
Example
The interplay between culture and technology shapes modern life.
C1 verb /ɡrʌnt/

grunt

Meaning
to make a low, rough sound, often when exerting effort or expressing annoyance
Example
He grunted as he lifted the heavy box.
C1 noun /ˈpæn.θi.ən/

pantheon

Meaning
All the gods of a religion collectively; a building dedicated to all gods.
Example
The Roman Pantheon is one of the best-preserved ancient temples.
C1 adjective /ˈruːfəl/

rueful

Meaning
Expressing sorrow, regret, or pity.
Example
He gave a rueful smile after losing the match.
C1 verb /ˈsætʃəˌreɪt/

saturate

Meaning
to fill completely with something until no more can be absorbed
Example
The heavy rain saturated the ground within minutes.
C1 noun /daɪˈvɜː.ʃən/

Diversion

Meaning
the action of turning something aside from its course; an activity that diverts the mind
Example
The road closure forced a diversion through the countryside for all travelers.
C1 noun /ˈhɛrəsi/

heresy

Meaning
belief or opinion that goes against established religious doctrine or accepted beliefs.
Example
In medieval times, heresy was often punished severely.
C1 noun /ˈskep.tɪ.sɪ.zəm/

skepticism

Meaning
A skeptical attitude; doubt as to the truth of something.
Example
His skepticism about new technology often makes him resistant to change.
C1 adjective /ˈtɜːrbjələnt/

turbulent

Meaning
Characterized by conflict, disorder, or confusion; not stable or calm.
Example
The country went through a turbulent period of political change.
C1 verb /dɪˈsɛnt/

dissent

Meaning
To hold or express opinions that are different from those officially accepted.
Example
Several members dissented from the majority decision.
C1 adjective /aɪˈdɪlɪk/

idyllic

Meaning
Like an idyll; extremely happy, peaceful, or picturesque.
Example
They enjoyed an idyllic vacation by the sea.
C1 verb /əˈsæsɪneɪt/

assassinate

Meaning
To murder someone important, often a political or religious leader, usually by surprise attack.
Example
The rebels planned to assassinate the king.
C1 noun /prəʊˌkræs.tɪˈneɪ.ʃən/

procrastination

Meaning
The act of delaying or postponing tasks or activities.
Example
Procrastination is the enemy of success.
C1 noun /dɪn/

din

Meaning
a loud, unpleasant, and prolonged noise
Example
The din of traffic outside made it hard to concentrate.
C1 noun /tɪnt/

tint

Meaning
a slight shade or variation of a color
Example
The walls were painted white with a slight blue tint.
C1 noun /ˈrəʊ.bɒt əˈsɪs.tɪd prəˈsiː.dʒərz/

robot-assisted procedures

Meaning
Medical operations performed with the help of robotic systems to enhance precision and control.
Example
Robot-assisted procedures reduce human error.
C1 adjective /ˈhɔː.ti/

Haughty

Meaning
arrogantly superior and disdainful; showing excessive pride
Example
She gave him a haughty look and walked away.
C1 adjective /ˈdɒdʒi/

Dodgy

Meaning
suspicious; questionable; unreliable; risky or dangerous
Example
That deal sounds dodgy to me.
C1 noun /ˈɡeɪ.ə.ti/

Gaiety

Meaning
the state or quality of being light-hearted or cheerful; festive atmosphere
Example
The wedding reception was filled with gaiety, laughter, and joyful celebrations.
C1 noun /ˈtrɪŋkɪt/

trinket

Meaning
a small ornament or piece of jewelry that is not expensive
Example
She bought a little trinket from the beach market as a souvenir.
C1 noun /ˈstɒpɪdʒ/

stoppage

Meaning
The act of stopping or ceasing; a halt in operation or activity
Example
The sudden stoppage of the train caused delays for all passengers.
C1 noun /ˌsæbəˈtɜːr/

saboteur

Meaning
A person who engages in sabotage.
Example
The saboteur was arrested before he could plant the bomb.
C1 preposition /əˈtɒp/

atop

Meaning
on the top of something
Example
A flag was placed atop the tower.
C1 noun ˌvæljuˈeɪʃən

valuation

Meaning
An estimation of the worth of something.
Example
The valuation of the property was much higher than expected.
C1 noun, adjective /ˈpɑːrtɪzən/

partisan

Meaning
A strong supporter of a party, cause, or person; showing biased allegiance.
Example
The debate quickly turned partisan, with each side defending their own agenda.
C1 noun /ˈʌndərdɒɡ/

underdog

Meaning
a competitor thought to have little chance of winning; a weaker party in a contest
Example
The underdog team surprised everyone by winning the championship.
C1 noun /ˈmɒk.ər.i/

Mockery

Meaning
teasing and contemptuous language or behavior; ridicule
Example
His speech was met with mockery from the audience.
C1 verb /dɪˈkraɪ/

decry

Meaning
to publicly criticize or express strong disapproval of something
Example
Many activists decry the destruction of the rainforest.
C1 noun ˈæf.lu.əns

affluence

Meaning
The state of having a great deal of money; wealth.
Example
His affluence allowed him to travel the world.
C1 verb /bɪˈɡrʌdʒ/

begrudge

Meaning
to resent someone for having something; to give reluctantly
Example
She did not begrudge him his success.
C1 noun /rɪˈvʌlʃən/

revulsion

Meaning
a strong feeling of disgust or repulsion
Example
She felt revulsion at the sight of the cruel act.
C1 adjective /ˈsɪn.tɪ.leɪ.tɪŋ/

scintillating

Meaning
brilliantly clever, exciting, or sparkling
Example
Her scintillating conversation kept everyone entertained.
C1 noun /ˌmælnuːˈtrɪʃən/

Malnutrition

Meaning
Lack of proper nutrition; poor nourishment
Example
Malnutrition among children is a serious public health concern.
C1 adjective ˈɪn.lənd

Inland

Meaning
Situated in the interior of a country; away from the coast.
Example
Inland transport boosts local trade.
C1 noun /ˈhæm.lət/

Hamlet

Meaning
a small rural settlement, smaller than a village; a small community
Example
The tiny hamlet nestled in the valley had only a dozen houses and one small church.
C1 verb /ˈpleɪdʒəraɪz/

plagiarize

Meaning
to take someone else's work or ideas and present them as your own
Example
He was warned not to plagiarize his friend's essay.
C1 noun /ˈtɪt.bɪt/

Titbit

Meaning
a small piece of tasty food; a small interesting piece of information
Example
She served delicious titbits at the party.
C1 noun /ˈmɛdli/

medley

Meaning
A mixture of different things, especially musical tunes combined together.
Example
The band played a medley of popular songs.
C1 noun ˈʌp.raɪ.zɪŋ

uprising

Meaning
An act of resistance or rebellion; a revolt against an authority or government.
Example
The uprising marked the beginning of the revolution.
C1 adjective /ˈhiːdləs/

heedless

Meaning
showing a reckless lack of care or attention
Example
He drove with heedless disregard for the rules.
C1 adjective /ɪnˈdʒʊəriəs/

injurious

Meaning
Causing or likely to cause harm or damage.
Example
Smoking is injurious to health.
C1 noun vaɪˈtæləti

vitality

Meaning
The state of being strong and active; energy.
Example
The vitality of the team helped them succeed in the competition.
C1 verb /smɛlt/

smelt

Meaning
to extract metal from its ore by heating and melting
Example
The workers smelt iron from its ore in the factory.
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 /ˌlɪbəˈreɪʃən wɔːr/

liberation war

Meaning
a war fought to gain freedom from foreign rule, occupation, or oppression; an armed struggle for national independence
Example
The liberation war reshaped the nation’s history and identity.
C1 adjective /ˌmiː.diˈoʊ.kər/

mediocre

Meaning
Of only average quality; not very good.
Example
The movie was entertaining but overall mediocre.
C1 adjective ˌkɒn.ʃiˈen.ʃəs

conscientious

Meaning
Wishing to do what is right, especially to do one's work or duty well and thoroughly.
Example
A conscientious worker always delivers high-quality results.
C1 noun /ˈsækrɪlɪdʒ/

sacrilege

Meaning
Violation or misuse of what is regarded as sacred.
Example
Stealing from the temple was considered an act of sacrilege.
C1 noun /slæɡ/

slag

Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
C1 noun /ˈmæntl̩/

mantle

Meaning
A cloak or covering; also the layer of the earth between the crust and the core.
Example
The leader assumed the mantle of responsibility.
C1 adjective /təˈren.ʃəl/

Torrential

Meaning
falling rapidly in copious streams; extremely heavy rainfall
Example
The torrential rain flooded the streets within hours.
C1 adjective /ˈsteɪtli/

stately

Meaning
Having a dignified, majestic, and impressive appearance or manner.
Example
The stately mansion stood at the end of the long driveway.
C1 verb ɪkˈstræp.ə.leɪt

Extrapolate

Meaning
Making future estimates based on existing information
Example
Scientists extrapolate climate changes based on past data.
C1 adjective /rɪˈtaɪərɪŋ/

retiring

Meaning
Shy and reserved; avoiding social contact.
Example
She is a quiet, retiring woman who avoids attention.
C1 noun, verb /raʊt/

rout

Meaning
A decisive defeat; to defeat completely.
Example
The army routed the enemy forces in the battle.
C1 noun /ˈʃæsi/

chassis

Meaning
the base frame of a vehicle or other wheeled machine
Example
The mechanic examined the car's chassis for damage.
C1 verb/noun /ˈkwɪbəl/

quibble

Meaning
To argue or raise objections about a trivial matter; a petty objection.
Example
They quibbled over who should pay the bill.
C1 verb /rɪˈtɔːrt/

retort

Meaning
To reply quickly or sharply, often in a witty or angry manner.
Example
He quickly retorted that he was not to blame.
C1 verb /əˈnʌl/

annul

Meaning
to declare something legally invalid or cancel it
Example
The court decided to annul the marriage due to fraud.
C1 noun /əˈnɒməli/

anomaly

Meaning
something that deviates from the norm or expected result
Example
The sudden drop in temperature was considered an anomaly.
C1 adjective /ˌɪndɪˈsaɪsɪv/

Indecisive

Meaning
unable to make decisions quickly; hesitant; wavering
Example
She was indecisive about which university to attend.
C1 verb /ˈtɑːtər/

totter

Meaning
To move unsteadily, as if about to fall; to be on the point of collapse.
Example
The old man tottered across the street with a cane.
C1 verb /ˌkaʊntərˈbæləns/

counterbalance

Meaning
to offset or balance the effect of something
Example
Exercise can counterbalance the negative effects of stress.
C1 verb /ˌɪn.trəˈspekt/

introspect

Meaning
To examine one's own thoughts, feelings, or mental state.
Example
He often introspects before making important decisions.
C1 adjective /ˌɪntərˈtwaɪnd/

intertwined

Meaning
closely connected or twisted together
Example
Their lives became deeply intertwined after the accident.
C1 noun ˈdʒen.ə.saɪd

genocide

Meaning
The deliberate killing of a large group of people, especially those of a particular ethnic group or nation.
Example
The allegations of genocide raised global concerns.
C1 adjective /ˌʌnbɪˈkʌmɪŋ/

unbecoming

Meaning
Not proper or appropriate for a person; unsuitable.
Example
His rude behavior was unbecoming of a leader.
C1 adjective /prɪˈkoʊʃəs/

precocious

Meaning
Showing advanced development or maturity at an unusually early age.
Example
The precocious child was reading novels at the age of five.
C1 verb /sleɪ/

slay

Meaning
to kill violently; informally, to impress greatly
Example
The hero vowed to slay the dragon.
C1 adjective /ˈsæv.i/

savvy

Meaning
Having practical knowledge and the ability to make good judgments.
Example
She is a tech-savvy entrepreneur.
C1 verb /ˈsnɪkər/

snicker

Meaning
to laugh quietly in a disrespectful or mocking way
Example
The students snickered when the teacher made a mistake.
C1 noun /ˌprɒvəˈkeɪʃən/

provocation

Meaning
An action or statement that is intended to make someone angry or to cause a reaction.
Example
His rude comment was a clear provocation.
C1 adjective /ˈflaʊəri/

flowery

Meaning
Full of flowers or overly elaborate in style or language.
Example
She wrote a flowery letter filled with poetic phrases.
C1 noun /ˈfɔːrɡraʊnd/

foreground

Meaning
the part of a scene that is nearest to and in front of the viewer
Example
The flowers in the foreground brightened the picture.
C1 adjective /dɪˈlɪriəs/

delirious

Meaning
in an extremely disturbed or excited state of mind, often due to illness or emotion
Example
He was delirious with fever and kept muttering nonsense.
C1 noun ˈsʌb.tɛkst

subtext

Meaning
Hidden meaning or message behind spoken or written words
Example
The subtext of his speech suggested disagreement.
C1 verb /daɪˈvɜːrdʒ/

diverge

Meaning
to separate and go in different directions; to differ
Example
The two paths diverge at the fork in the road.
C1 adjective /maɪˈkroʊ.bi.əl/

microbial

Meaning
Related to bacteria, fungi, and other microscopic organisms.
Example
Microbial activity in the soil improves fertility.
C1 verb /ˈvæŋkwɪʃ/

vanquish

Meaning
to defeat thoroughly, especially in battle or competition
Example
The army vanquished its enemies with superior strategy.
C1 adjective /ɔːˈdeɪ.ʃəs/

Audacious

Meaning
showing willingness to take bold risks; daring
Example
His audacious plan to climb the mountain without proper equipment shocked everyone.
C1 noun /ˈɑn.set/

Onset

Meaning
the beginning or early stages of something; the start of a medical condition
Example
The onset of winter brought heavy snowfall.
C1 adjective /ˌɪndɪˈspjuːtəbəl/

Indisputable

Meaning
impossible to deny or argue against; undeniable; certain
Example
The evidence against him was indisputable.