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C1 adjective /ˈstɛlər/

stellar

Meaning
Relating to stars; outstanding or excellent.
Example
She gave a stellar performance in the play.
C1 adjective /ɪnˈhɪbɪtɪd/

inhibited

Meaning
Unable to act in a relaxed and natural way, especially due to self-consciousness or restraint.
Example
He was too inhibited to express his true feelings.
C1 noun /ˌɪnfɪˈdɛləti/

infidelity

Meaning
the act of being unfaithful to a spouse or partner
Example
Their marriage ended due to his infidelity.
C1 adjective, noun /ˈsɛlɪbət/

celibate

Meaning
abstaining from marriage and sexual relations; a person who does so
Example
He chose to remain celibate for religious reasons.
C1 noun /ɪnˈkɜːrʒən/

incursion

Meaning
A sudden attack or invasion into a place or territory.
Example
The army repelled the enemy incursion at the border.
C1 verb /dɪˈpliːt/

deplete

Meaning
to reduce the quantity or supply of something
Example
The long war has depleted the country's resources.
C1 adjective /ɒmˈnɪv.ər.əs/

Omnivorous

Meaning
eating both plants and animals; feeding on various kinds of food
Example
Bears are omnivorous animals that eat both plants and meat.
C1 adverb /əˈtroʊʃəsli/

atrociously

Meaning
in a very cruel, shocking, or extremely bad manner
Example
The service at the restaurant was atrociously slow.
C1 noun /ɪˌmæn.sɪˈpeɪ.ʃən/

Emancipation

Meaning
the fact or process of being set free from legal, social, or political restrictions
Example
The emancipation of slaves was a significant moment in American history.
C1 noun /ɪkˈspɛktənsi/

expectancy

Meaning
the state of expecting something; anticipation or likelihood
Example
There was a sense of expectancy in the room before the results were announced.
C1 adjective /dɪˈvaʊt/

devout

Meaning
Deeply religious or sincere.
Example
He is a devout believer who prays every day.
C1 noun /ˈmedoʊ/

Meadow

Meaning
A piece of grassland, especially one used for hay
Example
The cows grazed peacefully in the green meadow.
C1 adjective /ˈsæŋɡwɪn/

sanguine

Meaning
Optimistic or positive, especially in a difficult situation.
Example
Despite the challenges, she remained sanguine about the future.
C1 noun ˌdɛɡrəˈdeɪʃən

degradation

Meaning
The condition or process of degrading or being degraded.
Example
Soil degradation due to overuse is a growing issue.
C1 adjective /dɪˈsɪd.ju.əs/

deciduous

Meaning
Referring to trees that shed their leaves seasonally, typically in autumn.
Example
Oak and maple trees are deciduous, shedding leaves in autumn.
C1 verb /ˈɡræpəl/

grapple

Meaning
to struggle or wrestle with something, often a problem or opponent
Example
The company is grappling with financial difficulties.
C1 verb /blɜːrt/

blurt

Meaning
to say something suddenly without thinking
Example
He blurts out the secret accidentally.
C1 adjective /ˈpʊʃi/

pushy

Meaning
excessively assertive or aggressive, often annoyingly so
Example
The salesperson was too pushy, which drove customers away.
C1 noun /fɪˈlæn.θrə.pɪst/

philanthropist

Meaning
a person who seeks to promote the welfare of others, especially by donating money to good causes
Example
The philanthropist donated millions to build schools in rural areas.
C1 verb /ˈdiːmɑːrˌkeɪt/

demarcate

Meaning
to set the boundaries or limits of something
Example
The land was demarcated with fences to avoid disputes.
C1 adjective /ˈɛərˌtaɪt/

airtight

Meaning
Completely sealed so that no air can get in or out.
Example
Store the cookies in an airtight container to keep them fresh.
C1 noun /twɪt/

Twit

Meaning
a silly or foolish person; to tease or make fun of someone
Example
Don't be such a twit and listen carefully.
C1 adjective /hɪpˈnɒtɪk/

hypnotic

Meaning
Producing sleep or a trance-like state; mesmerizing.
Example
The music had a hypnotic effect on the audience.
C1 noun /ɪmˌpɜː.sənˈeɪ.ʃən/

impersonation

Meaning
The action of pretending to be another person for the purpose of entertainment or fraud.
Example
Online impersonation is a serious cybercrime.
C1 noun /bʌm/

bum

Meaning
informal term for the buttocks; also a homeless or lazy person
Example
He sat on his bum all day doing nothing.
C1 verb /wɪns/

wince

Meaning
To make an involuntary movement of the face or body as a result of pain or distress.
Example
He winced when the doctor touched his injured arm.
C1 adjective /ˈspaɪni/

spiny

Meaning
covered with or full of spines; having sharp points
Example
The spiny cactus stood tall in the desert.
C1 noun əbˈzɔːrp.ʃən

absorption

Meaning
The process or action by which one thing absorbs or is absorbed by another.
Example
Plants help in the absorption of carbon dioxide.
C1 noun /ˈfoʊliɪdʒ/

foliage

Meaning
The leaves of a plant, collectively.
Example
The autumn foliage looked stunning in the park.
C1 noun /ˈnɜr.tʃər/

Nurture

Meaning
the process of caring for and encouraging growth or development
Example
Good parenting involves both nature and nurture.
C1 verb /pəˈveɪd/

pervade

Meaning
to spread through and be present in every part of something
Example
The smell of fresh flowers pervaded the entire room.
C1 noun /ˈjuːlədʒi/

eulogy

Meaning
A speech or piece of writing that praises someone, especially after their death.
Example
Her brother delivered a heartfelt eulogy at the funeral.
C1 noun /əbˈzɜːrvətɔːri/

observatory

Meaning
A building equipped for observing astronomical or meteorological events.
Example
The observatory is open to the public on weekends.
C1 adjective /ˈwɒn.tən/

Wanton

Meaning
deliberate and unprovoked; sexually immodest or promiscuous
Example
The vandals caused wanton destruction to the public property.
C1 noun/verb /ɡæʃ/

gash

Meaning
A long, deep cut or wound; to cut deeply or violently.
Example
He had a deep gash on his leg after the accident.
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 /ɪˈmeɪʃieɪtɪd/

emaciated

Meaning
Abnormally thin or weak, usually due to illness or lack of food.
Example
The emaciated dog was rescued from the abandoned house.
C1 adverb /ˈnæroʊli/

Narrowly

Meaning
by a small margin; barely; in a limited way
Example
She narrowly escaped the accident.
C1 verb /θrɒb/

throb

Meaning
to beat or pulse strongly, often with pain
Example
His head began to throb after the long day.
C1 verb /priːn/

preen

Meaning
To groom or dress oneself with care; to show pride in one's appearance.
Example
She preened in front of the mirror before leaving for the party.
C1 noun /ˈtɪrəni/

tyranny

Meaning
Cruel and oppressive government or rule by a tyrant.
Example
The people revolted against the tyranny of their ruler.
C1 noun /pəˈtɜːrnəti/

paternity

Meaning
The state of being someone's father.
Example
He demanded a paternity test to confirm his relationship with the child.
C1 noun /ˈmɒnəlɪθ/

monolith

Meaning
A large single upright block of stone, or a large, powerful, indivisible organization or system.
Example
The ancient monolith stood in the desert for centuries.
C1 verb /ɪnˈtaɪs/

entice

Meaning
to attract or tempt someone by offering something appealing
Example
The advertisement was designed to entice customers into the store.
C1 noun /ˈfæs.ɪt/

facet

Meaning
One of the many aspects or features of something; a particular part or element of something.
Example
Every facet of the project was carefully analyzed.
C1 verb /dɪˈteɪn/

detain

Meaning
to keep someone from proceeding; to hold back, especially by official authority
Example
The police detained the suspect for questioning.
C1 adjective /ˈɡʌsti/

gusty

Meaning
characterized by strong, sudden bursts of wind
Example
It was a cold, gusty day by the sea.
C1 verb /ˈtiːtər/

teeter

Meaning
to move or balance unsteadily; to wobble
Example
The glass began to teeter on the edge of the table.
C1 noun /ˈlɔː.meɪ.kər/

Lawmaker

Meaning
a person who writes and passes laws, especially a member of a legislative body
Example
The lawmakers voted on the new education bill.
C1 noun /ˈmɔː.tər ænd ˈpes.əl/

Mortar and Pestle

Meaning
a bowl and grinding tool used to crush and grind spices, herbs, and other substances
Example
She ground the spices using a mortar and pestle.
C1 noun /ˈmoʊɡəl/

mogul

Meaning
A powerful or influential person, especially in business or media.
Example
He became a tech mogul by founding a billion-dollar company.
C1 adjective /ˈɒptɪk/

optic

Meaning
Relating to the eye or vision.
Example
The optic nerve carries signals from the eye to the brain.
C1 noun /kəˈlɪɡrəfi/

calligraphy

Meaning
The art of beautiful and decorative handwriting.
Example
She took a course to improve her calligraphy skills.
C1 verb /spɜːrn/

spurn

Meaning
To reject something or someone with disdain or contempt.
Example
She spurned his offer of help.
C1 adjective /juːˈfɔːrɪk/

euphoric

Meaning
Characterized by or feeling intense excitement and happiness.
Example
The fans were euphoric after their team's victory.
C1 noun /ɪnˈkɒmpɪtəns/

incompetence

Meaning
Lack of ability, skill, or effectiveness in doing something.
Example
The project failed due to the manager’s incompetence.
C1 noun /stɑːr fruːts/

Star Fruits

Meaning
yellow tropical fruits that form a star shape when sliced crosswise; tangy and crisp taste
Example
When you slice star fruits, they look like beautiful yellow stars on your plate.
C1 adjective /ˈsʌl.ki/

Sulky

Meaning
bad-tempered and sullen; moody
Example
The child became sulky when he couldn't get his favorite toy.
C1 noun /ˌekspəˈzɪʃən/

exposition

Meaning
a detailed explanation or a large public exhibition
Example
The scientist gave a clear exposition of the theory.
C1 adjective /ˈbrɪtl/

brittle

Meaning
easily broken or cracked; hard but liable to break
Example
The glass was so brittle that it cracked easily.
C1 noun /ˌplɔː.zəˈbɪl.ə.ti/

plausibility

Meaning
The quality of being reasonable or probable.
Example
The plausibility of his explanation convinced the jury.
C1 verb /sɪˈsiːd/

secede

Meaning
To formally withdraw from a political or organizational union.
Example
Several states threatened to secede from the union.
C1 noun /θiˈɒlədʒi/

theology

Meaning
The study of the nature of God and religious beliefs.
Example
She is pursuing a degree in theology at the university.
C1 noun /ˈtoʊtəm/

totem

Meaning
A natural object, animal, or symbol that is revered as a spiritual emblem by a group or tribe.
Example
The eagle is considered a sacred totem in many cultures.
C1 adjective dɪ ˈskrɛʃ.ən.er.i

discretionary

Meaning
Available for use at the discretion of the user; not required or mandatory.
Example
He set aside some discretionary income for travel.
C1 adjective /əbˈzɜːrvənt/

Observant

Meaning
quick to notice things; watchful; attentive
Example
The observant detective noticed every small detail at the crime scene.
C1 verb /krɪndʒ/

cringe

Meaning
To shrink back in fear, embarrassment, or discomfort.
Example
She cringed when she remembered her mistake.
C1 verb /ˌriːˈvaɪ.t̬əl.aɪz/

revitalize

Meaning
To restore energy and effectiveness to something.
Example
The new policies aim to revitalize the economy.
C1 verb /rɪˈdʒɛnəreɪt/

regenerate

Meaning
to grow or produce again; to renew or restore
Example
The lizard can regenerate its lost tail.
C1 noun /ˈnaɪ.tɪŋ.ɡeɪl/

Nightingale

Meaning
small songbird known for its beautiful singing, especially at night
Example
The nightingale sang sweetly in the moonlight.
C1 adjective ˈɒb.stɪ.nət

obstinate

Meaning
Refusing to change one's mind or accept others' advice easily.
Example
He remained obstinate despite the logical arguments.
C1 noun /ˈmɪd.əl.mæn/

Middleman

Meaning
A person who acts as an intermediary between two parties in a business transaction
Example
They decided to cut out the middleman and sell directly to customers.
C1 adjective /ɪɡˈzɪləreɪtɪŋ/

exhilarating

Meaning
Making someone feel very excited, happy, or thrilled.
Example
Skydiving was the most exhilarating experience of his life.
C1 verb /ˈsɛvər/

sever

Meaning
to cut off or separate, especially by cutting; to end a connection or relationship
Example
He had to sever ties with the company after the dispute.
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
C1 adjective /ˌnjʊə.rəˈlɒdʒ.ɪ.kəl/

neurological

Meaning
Relating to the anatomy, functions, and organic disorders of nerves and the nervous system.
Example
Meditation has positive neurological effects on mental health.
C1 noun /ɛnˈdɔːr.fɪnz/

endorphins

Meaning
Chemical compounds produced by the brain that reduce pain and create feelings of happiness.
Example
Exercise releases endorphins, reducing stress and pain.
C1 verb /riːˈkæptʃər/

recapture

Meaning
To take back or regain possession of something.
Example
The army managed to recapture the lost territory.
C1 adjective, noun /ˈɪnvəlɪd/ (adjective), /ɪnˈvælɪd/ (noun)

invalid

Meaning
Not valid; having no force or effect. Also refers to a person too weak or ill to care for themselves.
Example
The court declared the contract invalid.
C1 noun /kəˈnʌn.drəm/

conundrum

Meaning
A complex problem or puzzle without an easy solution
Example
The ethical conundrum puzzled the researchers.
C1 noun /ɡruːv/

groove

Meaning
a long narrow cut or depression, or a rhythmic pattern in music
Example
The DJ kept the crowd dancing to the groove.
C1 noun /ˈlɛdʒɪsleɪtər/

legislator

Meaning
a person who makes laws, especially a member of a legislative body
Example
The legislator introduced a bill to improve healthcare.
C1 noun/adjective /ˈmɒnəkrəʊm/

monochrome

Meaning
A photograph, painting, or screen image in black and white or varying tones of one color.
Example
The old film was shot entirely in monochrome.
C1 adjective /əˈnæl.ə.ɡəs/

analogous

Meaning
Comparable in certain respects, typically in a way that makes clearer the nature of things being compared.
Example
The human brain is analogous to a supercomputer.
C1 noun /ˌkɒn.stəˈleɪ.ʃən/

constellation

Meaning
a group of stars forming a recognizable pattern in the night sky
Example
Orion is one of the most famous constellations.
C1 noun /ˌriː.pəˈkʌʃ.ən/

repercussion

Meaning
An unintended consequence occurring some time after an event or action.
Example
The economic crisis had severe repercussions on global trade.
C1 noun əˈtrɪʃ.ən

attrition

Meaning
The process of reducing something's strength or effectiveness through sustained attack or pressure.
Example
The company faced high employee attrition due to job dissatisfaction.
C1 adjective /kənˈɡrɛʃənl/

congressional

Meaning
relating to a congress, especially the US Congress
Example
The bill received strong congressional support.
C1 noun /ɪmˈpjʊərəti/

impurity

Meaning
the state of being unclean or contaminated; a substance that makes something impure
Example
The scientist removed every impurity from the water sample.
C1 adjective /ˌfɪz.i.əˈlɒdʒ.ɪ.kəl/

physiological

Meaning
Relating to bodily functions and activities.
Example
Exercise improves physiological functions of the body.
C1 noun /rɪˈflɛktər/

reflector

Meaning
A surface or device that reflects light, heat, or sound, often used to direct beams or improve visibility.
Example
The cyclist attached a red reflector to the back of his bike for safety.
C1 adjective dʒuːˈdɪʃ.əs

judicious

Meaning
Having, showing, or done with good judgment or sense; wise and careful.
Example
A judicious decision can prevent future problems.
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 /kəˈres/

Caress

Meaning
a gentle or loving touch
Example
The mother's gentle caress calmed the crying baby.
C1 noun ˌkɒm.pjʊˈteɪ.ʃən

computation

Meaning
The action of mathematical calculation.
Example
Complex computation is required for AI models.
C1 noun /ˌvaɪ.əˈbɪl.ə.ti/

viability

Meaning
Ability to work successfully; feasibility.
Example
The viability of the project depends on funding.
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.
C1 verb /ˈdɪs.ɪ.peɪt/

dissipate

Meaning
To disappear or cause to disappear gradually.
Example
The tension in the room slowly dissipated.
C1 noun /ˈpəʊstˌskrɪpt/

postscript

Meaning
an additional remark at the end of a letter or text, after the signature
Example
She added a brief postscript to thank him again.
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 ˌæɡrɪˈkʌltʃərəli sɪɡˈnɪfɪkənt

agriculturally significant

Meaning
Important or crucial related to farming and agriculture
Example
Winter is agriculturally significant for crop production.
C1 adjective /ˈsɛn.sər.i/

sensory

Meaning
Related to the five human senses (sight, hearing, taste, touch, smell).
Example
Sensory feedback enhances the VR experience.
C1 noun /kæʃ/

cache

Meaning
A hidden storage of items or a high-speed memory in computing.
Example
The hikers found a cache of supplies hidden under the rocks.
C1 adjective /ˈpær.ə.nɔɪd/

paranoid

Meaning
having an unreasonable fear or suspicion of others
Example
She became paranoid after hearing strange noises outside.
C1 adjective /pɪˈkjuːniˌɛri/

pecuniary

Meaning
relating to money or financial matters
Example
They faced pecuniary difficulties after the business failed.
C1 noun /pəˈrɛnθəsɪs/

parenthesis

Meaning
A pair of curved marks ( ) used to enclose words or numbers; also an interruption or digression in speech or writing.
Example
The explanation was given in a parenthesis within the text.
C1 adjective /ˈmʌðərli/

Motherly

Meaning
having qualities characteristic of a mother; caring and protective
Example
She showed motherly care and affection towards all the children.
C1 noun /ˈtraɪæd/

triad

Meaning
a group of three closely related people or things
Example
The project was managed by a triad of experts.
C1 adjective /ɪnˈfleɪtɪd/

inflated

Meaning
excessively increased in size, value, or importance; filled with air or gas
Example
The company faced criticism for its inflated prices.
C1 adjective /prɪˈpɒstərəs/

preposterous

Meaning
completely ridiculous or absurd; contrary to reason or common sense
Example
The idea that pigs could fly is preposterous.
C1 adjective /ɪˈlɒdʒ.ɪ.kəl/

Illogical

Meaning
not reasonable or sensible; lacking logic
Example
It would be illogical to go swimming in such cold weather.
C1 noun /ˈstɪɡmə/

stigma

Meaning
a mark of shame or disgrace associated with a particular circumstance or quality
Example
There is still a stigma around mental health issues in many societies.
C1 verb ɪˈluː.sɪ.deɪt

elucidate

Meaning
make (something) clear; explain.
Example
The professor elucidated the theory with simple examples.
C1 noun/verb /dɪsˈdeɪn/

disdain

Meaning
The feeling that someone or something is unworthy of respect; to regard with contempt.
Example
She looked at the messy room with open disdain.
C1 verb /ˈkwɪvər/

quiver

Meaning
To tremble or shake with slight but rapid motion.
Example
Her lips began to quiver as she tried not to cry.
C1 verb /ɪɡˈzuːd/

exude

Meaning
to display a quality strongly and openly; to release a liquid or smell slowly
Example
He exudes confidence whenever he speaks in public.
C1 noun /əˈkuːstɪks/

acoustics

Meaning
the science of sound, or the properties of a space that affect how sound is heard
Example
The hall’s excellent acoustics made the orchestra sound rich and clear.
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 /bəˈrɒmɪtər/

barometer

Meaning
an instrument that measures atmospheric pressure
Example
The barometer indicated a storm was approaching.
C1 verb /əˈvɛndʒ/

avenge

Meaning
to inflict harm in return for an injury or wrong done to oneself or another
Example
He vowed to avenge his brother's death.
C1 noun lɪˈkwɪd.ə.ti

liquidity

Meaning
The availability of liquid assets to a market or company; the ability to convert assets into cash quickly.
Example
Maintaining liquidity is crucial for financial stability.