cataract
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C1 noun /ˈkætərækt/

cataract

Meaning
A medical condition causing clouding of the eye's lens; also a large waterfall.
Example
The old man suffered from cataracts in both eyes.
C1 verb/noun ˈbuːt.stræp

bootstrap

Meaning
To start and develop a business using personal resources without external funding.
Example
He bootstrapped his company with minimal resources.
C1 noun ˈpɑː.sɪŋ

parsing

Meaning
The process of analyzing sentence structure to understand grammatical relationships.
Example
The AI model performs parsing to understand syntax.
C1 noun/adjective /ˈluː.nə.tɪk/

lunatic

Meaning
A person who is insane or acting in a foolish or reckless way; also used as an adjective meaning insane.
Example
The driver was driving like a lunatic on the highway.
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 /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 noun /ˈpɜːʃən/

Persian

Meaning
a native or inhabitant of Iran; the language spoken in Iran (Farsi)
Example
The Persian language has a rich literary history.
C1 noun /ɡəˈzet/

Gazette

Meaning
an official journal or newspaper, especially one published by an organization or government
Example
The promotion was officially announced in the government gazette last week.
C1 noun /ˈvɜː.tɪ.kəl ˈfɑː.mɪŋ/

vertical farming

Meaning
The practice of growing crops in vertically stacked layers, often incorporating controlled-environment agriculture.
Example
Vertical farming ensures maximum space utilization in urban areas.
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 adverb /ˈrɪdʒɪdli/

Rigidly

Meaning
in a strict, inflexible manner; without compromise
Example
The rules are rigidly enforced in this institution.
C1 noun /ˈmʌf.lər/

Muffler

Meaning
a long strip of cloth worn around the neck for warmth
Example
She wrapped a warm muffler around her neck before going outside.
C1 noun /əˈstuːt.nəs/

astuteness

Meaning
The ability to accurately assess situations or people and turn this to one's advantage.
Example
His astuteness helped in negotiations.
C1 adjective /ˈljʊərɪd/

lurid

Meaning
shocking or sensational in a vivid way, often involving crime or violence
Example
The newspaper published a lurid account of the crime.
C1 verb /ɪnˈsjuː/

ensue

Meaning
to happen as a result or consequence
Example
After the argument, silence ensued.
C1 noun /ɪmˈbɑː.ɡoʊ/

embargo

Meaning
A trade ban, restriction, or prohibition imposed by a government or international organization on a country.
Example
The UN imposed an embargo on arms exports.
C1 adjective /ˈstoʊɪk/

stoic

Meaning
Showing little or no emotion, even in difficult situations.
Example
She remained stoic during the crisis, never showing fear or panic.
C1 adjective /ˈskwiːmɪʃ/

squeamish

Meaning
easily made to feel sick, faint, or disgusted
Example
She felt squeamish at the sight of blood.
C1 adjective /ˈnjuː.ɑːnst/

nuanced

Meaning
Characterized by subtle shades of meaning or expression; having fine gradations of meaning, tone, or feeling.
Example
His analysis of the novel was highly nuanced.
C1 verb /əˈflɪkt/

afflict

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

inflame

Meaning
to arouse strong feelings or provoke anger; to cause inflammation in the body
Example
The politician's remarks served to inflame public opinion.
C1 phrase ˌbaɪ.oʊ.daɪˈvɜː.sɪ.ti ˌprez.əˈveɪ.ʃən

biodiversity preservation

Meaning
The protection and conservation of the variety of life in all its forms, including different species, genetic diversity, and ecosystems.
Example
Biodiversity preservation is critical for ecological balance.
C1 noun /ˌmænɪˈfɛstoʊ/

manifesto

Meaning
a public declaration of policy and aims, especially by a political party
Example
The party released its manifesto before the election.
C1 verb /ˈswɛltər/

swelter

Meaning
to suffer from intense heat
Example
We began to swelter in the midday sun.
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 /ˈɒktəɡən/

octagon

Meaning
A polygon with eight sides and eight angles.
Example
The stop sign is shaped like an octagon.
C1 adjective /ɪkˈskruːʃieɪtɪŋ/

excruciating

Meaning
causing extreme physical or mental pain
Example
She was in excruciating pain after the accident.
C1 noun /ɪkˈstrɛmɪti/

extremity

Meaning
The farthest point or limit of something; a severe or extreme condition.
Example
He was pushed to the extremity of his patience.
C1 adjective /ˈlaʊzi/

lousy

Meaning
of very poor quality; bad or unpleasant
Example
He felt lousy after catching the flu.
C1 adjective /ˈpɒp.jʊ.ləs/

Populous

Meaning
having a large population; densely populated; crowded with people
Example
China is the most populous country in the world.
C1 adjective ɪˌlektrəʊmæɡˈnetɪk

electromagnetic

Meaning
Relating to both electricity and magnetism or their interaction.
Example
Electromagnetic forces repel protons.
C1 adjective /ˈspeɪʃəl/

spatial

Meaning
relating to space or the position, area, and size of things
Example
The scientist studied the spatial arrangement of stars.
C1 adjective /dɪˈsiːtfəl/

deceitful

Meaning
Deliberately misleading or dishonest.
Example
She gave a deceitful answer to hide the truth.
C1 verb /dɪsˈfɪɡjər/

disfigure

Meaning
to spoil or damage the appearance of something
Example
The fire disfigured the old building.
C1 adjective ˌsəʊsɪəʊpəˈlɪtɪkəl

sociopolitical

Meaning
Combining social and political factors.
Example
Sociopolitical factors often influence public policy decisions.
C1 adjective /ˌɪnkəʊˈhɪərənt/

incoherent

Meaning
Not clear or easy to understand; lacking logical connection.
Example
His explanation was so incoherent that nobody could follow it.
C1 noun /ˈpleɪn.tɪf/

Plaintiff

Meaning
a person who brings a case against another in a court of law; the person who initiates a lawsuit
Example
The plaintiff filed a lawsuit against the company.
C1 verb ɪˈmɜːrs

immerse

Meaning
To involve oneself deeply in a particular activity or interest; to surround completely.
Example
Immerse yourself in the new language.
C1 adjective /ˌsekənd ˈreɪt/

second-rate

Meaning
Of mediocre or inferior quality.
Example
The movie was entertaining but clearly second-rate compared to the original.
C1 adjective /tɜːrs/

terse

Meaning
brief and to the point; sparing in the use of words
Example
His reply was terse and ended the conversation quickly.
C1 adjective ˌnɒnˈvɜːr.bəl

nonverbal

Meaning
Communication using body language, facial expressions, or gestures instead of words
Example
Nonverbal cues play a crucial role in effective communication.
C1 noun /əˈpɒsəl/

apostle

Meaning
A vigorous and pioneering advocate or supporter of a particular cause, often used for the early Christian disciples.
Example
He became an apostle of environmental protection.
C1 noun ˌɪn.tuˈɪʃ.ən

intuition

Meaning
The ability to understand something immediately, without the need for conscious reasoning.
Example
Her intuition told her something was wrong.
C1 verb /ˈmjuːteɪt/

mutate

Meaning
To change or cause to change in form, nature, or character.
Example
The virus can mutate into a more dangerous strain.
C1 noun/verb /ˈkætəpʌlt/

catapult

Meaning
A device for launching objects at high speed; to hurl or launch something suddenly.
Example
The invention catapulted him to international fame.
C1 noun /ˌræʃəˈnæl/

rationale

Meaning
the underlying reason or explanation for something
Example
The rationale behind his decision was clearly explained.
C1 verb /ˌaʊtˈstrɛtʃ/

outstretch

Meaning
To extend or stretch something outward.
Example
He outstretched his hand to help her up.
C1 adjective পারসিভেবল

perceivable

Meaning
Able to be seen, noticed, or detected.
Example
The changes in winter weather are perceivable in rural areas.
C1 adjective /ˌɪnɪkˈskjuːzəbl/

inexcusable

Meaning
Too bad to be justified or overlooked; unforgivable.
Example
His rude behavior was inexcusable.
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 ˈɪm.pɪ.təs

impetus

Meaning
The force or motivation that drives something forward; momentum.
Example
The new policy provided an impetus for economic growth.
C1 noun /ˈhɑː.mə.nɪm/

homonym

Meaning
A word that is spelled and pronounced like another word but has a different meaning.
Example
The word 'bat' is a homonym because it can mean an animal or a sports tool.
C1 verb /ˈpɒstʃʊleɪt/

postulate

Meaning
to suggest or assume that something is true as the basis for reasoning or discussion
Example
Scientists postulate that life exists on other planets.
C1 verb; noun /beltʃ/

belch

Meaning
to expel air noisily from the stomach through the mouth; to emit or pour out suddenly and forcefully
Example
After drinking the soda, he belched loudly.
C1 noun /məˈnɒɡəmi/

monogamy

Meaning
The practice of being married to or in a relationship with only one person at a time.
Example
Many cultures encourage monogamy as the ideal form of marriage.
C1 noun /ˈɔːrθədɑːksi/

orthodoxy

Meaning
traditional or generally accepted beliefs and practices
Example
The religious leader defended the orthodoxy of the faith.
C1 adjective /ˈræɡ.ɪd/

Ragged

Meaning
torn; tattered; frayed; shabby
Example
The homeless man wore ragged clothes.
C1 noun ˈsɪnədʒi

synergy

Meaning
The interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects.
Example
The synergy between the two companies led to a successful partnership.
C1 noun /ˈɔːrkɪd/

Orchid

Meaning
a diverse family of flowering plants known for their exotic and often fragrant flowers
Example
The white orchid on the windowsill bloomed for months.
C1 noun /ˈɑː.kɪ.taɪp/

archetype

Meaning
A very typical example of a certain person or thing; an original model or prototype.
Example
This painting is the archetype of modern art.
C1 noun /bɪˈtreɪər/

Betrayer

Meaning
a person who betrays someone or something; one who is disloyal
Example
The betrayer was exposed and faced severe consequences.
C1 adjective /ˈvɛdʒɪtətɪv/

vegetative

Meaning
relating to growth or the basic processes of life, often without conscious thought or activity
Example
The patient remained in a vegetative state after the accident.
C1 adjective/noun /fəˈrɛns.ɪk/

forensic

Meaning
Scientific analysis applied to criminal or legal matters
Example
Forensic experts analyze cybercrimes using advanced tools.
C1 adjective ɪnˈkʌm.bənt

incumbent

Meaning
necessary for (someone) as a duty or responsibility.
Example
It is incumbent upon all citizens to obey the law.
C1 noun /ˌɑːsɪˈleɪʃən/

oscillation

Meaning
The movement back and forth at a regular speed.
Example
The oscillation of the pendulum controls the clock.
C1 verb /ˈlɪbəreɪt/

liberate

Meaning
to set free from imprisonment, oppression, or restraint
Example
The army liberated the city from enemy control.
C1 noun ˈsɒv.rɪn.ti

sovereignty

Meaning
The authority of a state to govern itself or another state; supreme power or authority.
Example
Sovereignty is essential for a nation's identity.
C1 verb /rɪˈzaʊnd/

resound

Meaning
To fill a place with sound; to be celebrated or talked about widely.
Example
The hall resounded with applause.
C1 noun /ˈtʃæplɪn/

chaplain

Meaning
A member of the clergy attached to a private chapel, institution, hospital, or military unit.
Example
The army chaplain offered prayers before the battle.
C1 noun /ˌbɪbliˈɒɡrəfi/

bibliography

Meaning
a list of books, articles, or other sources used or referred to in scholarly work
Example
The report includes a detailed bibliography at the end.
C1 noun /hjuː/

hue

Meaning
A color or shade.
Example
The artist chose a soft blue hue for the background.
C1 noun ˌɪn.ɪˈfɪʃ.ən.si

inefficiency

Meaning
The state or quality of not achieving maximum productivity; failure to make the best use of time or resources.
Example
Government inefficiency leads to slow project completion.
C1 noun /ˈen.mə.ti/

Enmity

Meaning
a state or feeling of active opposition or hostility
Example
The enmity between the two families lasted for generations.
C1 noun /ˈsɒlstɪs/

solstice

Meaning
the two times in the year when the sun is at its greatest distance from the equator (summer and winter solstice)
Example
People celebrate the summer solstice with festivals and rituals.
C1 adjective /ˈdæʃ.ɪŋ/

Dashing

Meaning
stylish and confident; lively and energetic; attractive and charming
Example
He looked dashing in his new suit.
C1 noun /məˈdɜːrnəti/

modernity

Meaning
The quality or condition of being modern; up-to-date ideas, practices, or style.
Example
The city’s architecture reflects both tradition and modernity.
C1 adjective /ˈboʊɡəs/

bogus

Meaning
false, fake, or not genuine
Example
The police arrested him for using a bogus ID card.
C1 adjective /ˈfɪk.əl/

Fickle

Meaning
changeable; inconstant; liable to sudden unpredictable change
Example
His fickle nature made it hard to trust his promises.
C1 verb /ˈɛkˌsaɪz/

excise

Meaning
to cut out or remove completely, often by surgery
Example
The surgeon excised the tumor successfully.
C1 adjective /ˈskænti/

Scanty

Meaning
small in size or amount; insufficient; barely adequate
Example
The refugee camp had scanty food supplies.
C1 noun /pəˈvɪliən/

pavilion

Meaning
A large tent or temporary building, often used for events or exhibitions.
Example
The wedding reception was held in a decorated pavilion.
C1 adjective /kənˈstreɪnd/

constrained

Meaning
appearing forced, unnatural, or restricted
Example
He gave a constrained smile during the awkward meeting.
C1 verb /ˌʌndərˈvæljuː/

undervalue

Meaning
To assign too low a value or importance to something or someone.
Example
She felt that her boss consistently undervalued her contributions.
C1 noun /ˈvʌl.tʃər/

Vulture

Meaning
a large bird of prey that feeds mainly on carrion
Example
The vulture circled overhead, waiting for its prey.
C1 noun /ˈmɒn.ɑːk/

Monarch

Meaning
a sovereign ruler, especially a king or queen
Example
The monarch addressed the nation on television.
C1 noun /ˈspaɪər/

spire

Meaning
a tall, pointed structure on top of a building, especially a church
Example
The church spire could be seen from miles away.
C1 noun /ˈdʒʌɡ.lər/

Juggler

Meaning
a person who skillfully throws and catches objects as entertainment
Example
The juggler entertained the crowd with his amazing ball tricks.
C1 noun səˌsɛp.təˈbɪl.ə.ti

susceptibility

Meaning
The quality of being likely to be influenced or harmed by a particular thing; vulnerability.
Example
High susceptibility to infections requires extra care.
C1 verb /wiːld/

wield

Meaning
To hold and use a weapon, tool, or power effectively.
Example
The warrior wielded his sword with great skill.
C1 noun/verb /rɪˈpriːz/

reprise

Meaning
A repetition or return to an earlier theme, role, or action.
Example
The actor reprised his role in the sequel.
C1 verb /prɪˈkluːd/

preclude

Meaning
To prevent something from happening; to make impossible.
Example
Heavy rain precluded the possibility of a picnic.
C1 verb /ræsp/

rasp

Meaning
to speak in a rough, harsh voice or to scrape with a coarse sound
Example
He rasped out a warning before collapsing.
C1 verb /ˌdɪskənˈsɜːrt/

disconcert

Meaning
To unsettle, confuse, or disturb the composure of someone.
Example
The sudden change of plans disconcerted the team.
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 /ˈfreɪlti/

frailty

Meaning
The condition of being weak, delicate, or easily broken.
Example
Old age often comes with physical frailty.
C1 noun /ˌævɒ̃ˈɡɑːrd/

avantgarde

Meaning
people or works that are innovative, experimental, and ahead of their time
Example
The avantgarde of the 20th century reshaped modern art.
C1 noun /ˌmɛrɪˈtɒkrəsi/

meritocracy

Meaning
A system in which advancement is based on individual ability or achievement.
Example
In a true meritocracy, the most capable people rise to leadership positions.
C1 noun /ˈpɛdlər/

peddler

Meaning
a person who sells goods, often traveling from place to place
Example
The peddler walked through the village selling fresh fruits.
C1 noun /prəˈspɛktəs/

prospectus

Meaning
a printed document that advertises or describes a school, business, or investment offering
Example
The university sent out a prospectus to attract new students.
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 adjective /prəˈfeɪn/

profane

Meaning
showing disrespect or contempt for sacred things; irreverent or vulgar
Example
His jokes were considered too profane for the ceremony.
C1 noun nɪˈmɒnɪks

mnemonics

Meaning
A technique to aid memory; a device such as a pattern of letters, ideas, or associations
Example
Mnemonics help in remembering complex concepts easily.
C1 adjective /ɪkˈskjuːzəbl/

excusable

Meaning
Able to be forgiven or justified.
Example
Her mistake was excusable given the circumstances.
C1 noun /ˈhæŋ.ər/

Hangar

Meaning
a large building with extensive floor area, typically for housing aircraft; an aircraft shelter
Example
The airplane was stored safely in the hangar during the severe thunderstorm.
C1 adjective /ˈpɛndənt/

pendent

Meaning
hanging down or suspended
Example
The pendent branches touched the ground.
C1 verb /ɪkˈstræpəleɪtɪŋ/

extrapolating

Meaning
Extend the application of (a method or conclusion) to an unknown situation by assuming that existing trends will continue.
Example
Extrapolating from the current data, we can estimate the trends for next year.
C1 verb /ˈkaʊər/

cower

Meaning
to crouch down in fear
Example
The child cowered behind the sofa during the thunderstorm.
C1 verb /rɪˈɡrɛs/

regress

Meaning
To return to a former or less developed state.
Example
Without proper guidance, the child's progress began to regress.
C1 noun /ˈmeɪniə/

Mania

Meaning
Mental illness marked by periods of great excitement; extreme enthusiasm
Example
She had a mania for collecting vintage postcards from around the world.
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 adjective /ˈsʌbstəntɪv/

substantive

Meaning
Having a firm basis in reality; important, meaningful, or considerable.
Example
The company made substantive changes to its policy.
C1 noun /ˈpiː.hən/

Peahen

Meaning
female peacock
Example
The peahen is less colorful than the male peacock.
C1 adjective /dɪˈlæpɪˌdeɪtɪd/

dilapidated

Meaning
Fallen into disrepair or ruin due to neglect or age.
Example
The family lived in a dilapidated house at the edge of town.
C1 verb /ˈkrʌmpəl/

crumple

Meaning
to crush something into folds or wrinkles
Example
He crumpled the paper and threw it in the bin.
C1 verb /ɪmˈplɔːr/

implore

Meaning
To beg someone earnestly or desperately to do something.
Example
She implored him to stay with her.
C1 adjective /ɪˈnuːmərəbəl/

Innumerable

Meaning
too many to be counted; countless; infinite in number
Example
There are innumerable stars in the night sky that we cannot see with our naked eyes.
C1 noun ˌɒk.sɪˈdeɪ.ʃən

oxidation

Meaning
A chemical reaction that involves the combination of a substance with oxygen, often causing deterioration.
Example
Oxidation causes metal surfaces to weaken.
C1 adjective /ˈsɛnʃuəs/

sensuous

Meaning
Relating to or affecting the senses rather than the intellect; pleasing to the senses.
Example
The garden was filled with sensuous colors and fragrances.
C1 noun /krəˈʃɛndoʊ/

crescendo

Meaning
a gradual increase in loudness or intensity, especially in music
Example
The orchestra built to a powerful crescendo before the finale.
C1 adjective /mɪˈrækjələs/

Miraculous

Meaning
supernatural; amazing; extraordinary
Example
Her miraculous recovery amazed all the doctors.
C1 noun /ˈoʊ.vər spɪl/

Over-spill

Meaning
the overflow of liquid from a container; excess that cannot be contained
Example
The overspill from the river flooded nearby farms.