clandestine
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C1 adjective /klænˈdɛstaɪn/

clandestine

Meaning
kept secret or done secretly, especially for illicit purposes
Example
They held a clandestine meeting late at night.
C1 verb /ɪnˈtruːd/

intrude

Meaning
To enter a place or situation where one is not wanted or not invited.
Example
He felt embarrassed to intrude on their private conversation.
C1 noun /ɡriːn ˈkəʊ.kə.nʌt/

Green Coconut

Meaning
a young coconut with green outer shell containing refreshing coconut water
Example
We drank fresh water from a green coconut on the beach.
C1 adjective /pərˈsɛptəbl̩/

perceptible

Meaning
Able to be noticed or recognized by the senses or the mind.
Example
There was a perceptible change in the atmosphere.
C1 adjective /ɪnˈkɒmpɪtənt/

incompetent

Meaning
Lacking the necessary ability or skills to do something successfully.
Example
He was fired because he was incompetent at his job.
C1 adjective /ˈpəʊtəbl/

potable

Meaning
safe to drink; drinkable
Example
The villagers did not have access to potable water.
C1 noun /ˈkælkjʊləs/

calculus

Meaning
A branch of mathematics concerned with rates of change and accumulation; also a hard mineral deposit in the body such as on teeth.
Example
Calculus is essential for advanced studies in physics and engineering.
C1 verb /ɪnˈdʒen.dər/

engender

Meaning
To cause or give rise to a feeling, situation, or condition.
Example
The speech engendered hope among the people.
C1 verb /ˈkɒnskrɪpt/

conscript

Meaning
to force someone into military service
Example
The government conscripted young men during the war.
C1 adjective/verb /ˈleɪ.bərd/

labored

Meaning
done with great effort and difficulty; or past tense of labor
Example
He gave a labored explanation that confused the audience.
C1 adjective /ɪˈnɛpt/

inept

Meaning
lacking skill or ability; clumsy or incompetent
Example
His inept handling of the situation made it worse.
C1 noun /ˌhoʊmiˈɑːpəθi/

homeopathy

Meaning
a system of alternative medicine based on treating diseases with highly diluted substances
Example
He believes in homeopathy for treating common colds.
C1 verb /ˈʃrɪvəl/

shrivel

Meaning
To become dry, wrinkled, and smaller due to lack of moisture.
Example
The flowers shriveled under the hot sun.
C1 verb /ˈʌndərkʌt/

undercut

Meaning
to sell at a lower price than a competitor; to weaken or undermine something
Example
The company tried to undercut its rivals by offering lower prices.
C1 adjective /ˌsɛlf əbˈzɔːrbd/

self-absorbed

Meaning
Excessively preoccupied with oneself and one’s own thoughts, feelings, or interests.
Example
He was too self-absorbed to notice his friend's distress.
C1 adjective draʊt rɪˈzɪs.tənt

drought-resistant

Meaning
Able to survive and grow despite limited water availability or drought conditions.
Example
Drought-resistant crops can survive in arid conditions.
C1 adjective /ˈsek.j ə.l ər/

Secular

Meaning
not connected with religious or spiritual matters; worldly
Example
The country maintains a secular government that separates religion from politics.
C1 adjective /ˈɪɡ.ni.əs/

igneous

Meaning
Formed through the cooling and solidification of magma or lava.
Example
Granite is an igneous rock commonly used in construction.
C1 verb /rɪɡ/

rig

Meaning
to manipulate or control something dishonestly; to set up equipment
Example
The election was rigged by corrupt officials.
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 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 /ˌwɛl tə ˈduː/

well-to-do

Meaning
Prosperous, wealthy, or financially comfortable.
Example
They belong to a well-to-do family in the city.
C1 verb /strʌt/

strut

Meaning
to walk with a stiff, proud, and confident gait, often to show off
Example
He strutted across the stage after winning the award.
C1 noun /sɪˈkluːʒən/

seclusion

Meaning
The state of being private, away from other people.
Example
She spent the weekend in complete seclusion in her cabin.
C1 noun /ˌænəsˈθetɪk/

anesthetic

Meaning
A substance that causes loss of sensation or consciousness, especially used during surgery.
Example
The doctor administered a local anesthetic before stitching the wound.
C1 adjective /ˈroʊtəri/

rotary

Meaning
Relating to or characterized by rotation; revolving around an axis.
Example
The machine uses a rotary engine to function efficiently.
C1 noun /ˈtriːtɪs/

treatise

Meaning
a formal and systematic written work dealing with a subject in detail
Example
He wrote a treatise on modern economic theory.
C1 verb /ˈpærəlaɪz/

paralyze

Meaning
to cause someone or something to lose the ability to move or function normally
Example
The sudden shock seemed to paralyze him.
C1 noun əˈpreɪ.zəl

appraisal

Meaning
An assessment or evaluation of performance or quality.
Example
The annual appraisal determines salary increments.
C1 noun /ˈstæl.i.ən/

stallion

Meaning
An adult male horse that is not castrated, often used for breeding.
Example
The farm owns a powerful stallion for breeding purposes.
C1 noun /ˈves.tɪdʒ/

Vestige

Meaning
a trace or remnant of something that is disappearing or no longer exists
Example
No vestige of the ancient city remains.
C1 noun /ˈkærɪkətjʊə/

caricature

Meaning
A picture or description that exaggerates certain features for comic or satirical effect.
Example
The magazine published a caricature of the politician.
C1 noun /ˌvɜːrtʃuˈoʊsoʊ/

virtuoso

Meaning
A person highly skilled in music, art, or another artistic pursuit.
Example
The pianist is a true virtuoso, captivating audiences worldwide.
C1 adjective /ˈmaɪndləs/

mindless

Meaning
without thought or intelligence; done without consideration
Example
He was bored by the mindless tasks at work.
C1 verb /ˈflɪk.ər/

flicker

Meaning
to shine unsteadily or waver between light and dark
Example
The candle flickered in the wind.
C1 noun ˌpraɪ.vɪ.taɪˈzeɪ.ʃən

privatization

Meaning
The transfer of a business, industry, or service from public to private ownership and control.
Example
The privatization of state-owned companies increased efficiency.
C1 adjective /ədˈhiːsɪv/

Adhesive

Meaning
আঠালো; চটচটে;
Example
The adhesive tape stuck firmly to the wall.
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 /ˈstoʊəˌweɪ/

stowaway

Meaning
A person who hides on a ship, plane, or other vehicle in order to travel secretly without paying.
Example
The crew discovered a stowaway hiding in the cargo hold.
C1 adjective /ˌtaɪpəˈɡræfɪkəl/

typographical

Meaning
relating to the style, arrangement, or appearance of printed text
Example
There was a typographical error in the book.
C1 noun /bəˈtɒn/

baton

Meaning
A thin stick carried by a conductor to direct an orchestra, or used as a symbol of authority.
Example
The conductor raised his baton to begin the symphony.
C1 noun /ɪˈnɔːrmɪti/

enormity

Meaning
The extreme scale, seriousness, or extent of something perceived as bad or morally wrong.
Example
The enormity of the crime shocked the entire community.
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 noun/verb /hɛm/

hem

Meaning
the edge of a piece of cloth that is folded and sewn; to fold and sew the edge of cloth
Example
She hemmed the dress to make it shorter.
C1 adjective /ˈheɪ.zi/

Hazy

Meaning
covered with haze; unclear or vague; lacking clarity
Example
The mountain tops were hazy in the morning mist.
C1 noun /ˈtæbloʊ/

tableau

Meaning
a striking or artistic scene or arrangement of people or objects, often presented on stage or in art
Example
The actors froze in a tableau that captured the final moment of the play.
C1 verb /stoʊk/

stoke

Meaning
To add fuel to a fire; to encourage or increase a strong feeling or activity.
Example
The politician’s speech stoked anger among the crowd.
C1 verb /ɪmˈboʊl.dən/

embolden

Meaning
To give someone the courage or confidence to do something.
Example
The coach's words emboldened the team to play aggressively.
C1 noun ˌdʒɛriˈætrɪk səˈsaɪəti

geriatric society

Meaning
A society or community where elderly people make up a large proportion of the population
Example
A geriatric society demands specialized healthcare systems.
C1 noun ˌɔːɡ.menˈteɪ.ʃən

augmentation

Meaning
Increasing quantity, power or performance.
Example
The company invested in the augmentation of its workforce.
C1 noun /ˈwɔː.tər ˈspɪn.ɪtʃ/

Water Spinach

Meaning
A semi-aquatic leafy vegetable with hollow stems, popular in Asian cuisine
Example
Water spinach grows well in wet soil.
C1 adjective /ˈstɔːlwərt/

stalwart

Meaning
Loyal, reliable, and hardworking; strongly built or sturdy.
Example
She has always been a stalwart supporter of the community.
C1 noun /fɪˈnɑːleɪ/

finale

Meaning
the last part or conclusion of a performance, event, or series
Example
The concert ended with a spectacular finale.
C1 adjective /ˈtɔːrtʃərəs/

torturous

Meaning
Extremely painful or causing great suffering; relating to or involving torture.
Example
The journey through the desert was long and torturous.
C1 noun /səbˈmɜːrdʒəns/

submergence

Meaning
the act or process of being submerged or going underwater
Example
The submergence of coastal areas is a major concern due to rising sea levels.
C1 noun rɪˈdʒɛn.ər.ə.tɪv ˈfɑːr.mɪŋ

regenerative farming

Meaning
Agricultural practices that improve soil health and biodiversity.
Example
Regenerative farming improves soil fertility and biodiversity.
C1 verb /hɔːrd/

hoard

Meaning
to accumulate and hide away a large supply of something, often secretly
Example
During the crisis, many people began to hoard food and water.
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 adjective /ʌnˈtʃælɪndʒd/

Unchallenged

Meaning
not disputed or questioned; accepted without opposition; having no rival
Example
He remained the unchallenged champion for five years.
C1 noun /ˈkɜːrfjuː/

curfew

Meaning
a rule requiring people to stay indoors after a certain time, usually at night
Example
The city imposed a curfew during the unrest.
C1 noun /ɡeɪl/

Gale

Meaning
a very strong wind; a wind of force 7 to 10 on the Beaufort scale
Example
The fishing boats returned to harbor early due to the approaching gale.
C1 adjective /trænˈsen.dənt/

transcendent

Meaning
Beyond or above the range of normal or merely physical human experience.
Example
His art has a transcendent quality.
C1 verb /ˈnʌrɪʃ/

nourish

Meaning
To provide with food or other substances necessary for growth, health, and good condition
Example
Good books nourish the mind.
C1 noun /ˌfəʊtəʊˈsɪnθɛtɪk ɪˈfɪʃənsi/

photosynthetic efficiency

Meaning
The measure of how effectively plants convert light energy into chemical energy through the process of photosynthesis, directly affecting plant growth and crop yield.
Example
Improving photosynthetic efficiency can increase crop yields.
C1 adjective /ˈwɪr.i.səm/

Wearisome

Meaning
causing tiredness; tedious; boring and exhausting
Example
The wearisome journey took twelve hours to complete.
C1 verb /ˌriːhəˈbɪlɪteɪt/

rehabilitate

Meaning
to restore someone to health, normal life, or a good condition after illness, injury, or imprisonment
Example
The clinic helps rehabilitate injured athletes.
C1 verb /ɪˈlɪsɪt/

elicit

Meaning
To draw out a response, answer, or reaction from someone.
Example
The teacher’s question elicited thoughtful answers from the students.
C1 noun /ˈnɪkəl/

nickel

Meaning
a small coin, typically worth five cents in the United States
Example
He found a nickel on the ground.
C1 noun /rɪˈmɛmbrəns/

remembrance

Meaning
the act of remembering or honoring someone or something
Example
A service was held in remembrance of the fallen soldiers.
C1 adjective /ˈɪnfəməs/

infamous

Meaning
well known for some bad quality or deed
Example
The dictator was infamous for his cruelty.
C1 noun /ˌrɛspɪˈreɪʃən/

respiration

Meaning
The process of breathing or the exchange of gases in living organisms.
Example
Respiration is essential for all living beings.
C1 verb /ˈæbdɪkeɪt/

abdicate

Meaning
To give up a position of power or responsibility, especially a throne.
Example
The king decided to abdicate the throne.
C1 verb /ˈslækən/

slacken

Meaning
to make or become less tight, less active, or slower
Example
The driver slackened his speed as he approached the village.
C1 adjective/noun /ˈsʌkjələnt/

succulent

Meaning
Juicy or full of juice; also refers to a plant with thick, fleshy leaves adapted to storing water.
Example
The steak was so succulent that everyone enjoyed it.
C1 noun/adjective /ˈmɪstɪk/

mystic

Meaning
relating to mysteries, spirituality, or hidden truths; a person who seeks spiritual insight
Example
The mystic devoted his life to meditation and spiritual discovery.
C1 noun /rɪˈsaɪtl/

recital

Meaning
A performance of music, dance, or poetry, usually by a soloist.
Example
She gave a piano recital at the concert hall.
C1 verb /ˌpoʊstˈdeɪt/

postdate

Meaning
To assign a date later than the actual date to a document or event.
Example
She postdated the check to next month.
C1 noun /mɪkst ɪˈkɒn.ə.mi/

mixed economy

Meaning
An economic system where both government and private sector operate together.
Example
Most countries today follow a mixed economy model.
C1 noun /ˈpeɪ.ɡən/

Pagan

Meaning
a person holding religious beliefs other than the main world religions; a heathen
Example
Ancient Romans considered early Christians to be pagans.
C1 noun /ˈredʒ.ɪ.mən/

regimen

Meaning
A prescribed course of medical treatment, way of life, or diet for the promotion or restoration of health.
Example
A strict exercise regimen improves overall fitness.
C1 adjective /ˈneɡ.lɪ.dʒənt/

Negligent

Meaning
failing to take proper care; careless; showing lack of attention
Example
The negligent driver caused a serious accident.
C1 verb /ˈdæŋɡəl/

dangle

Meaning
to hang loosely or swing freely
Example
The keys dangled from his belt.
C1 verb ˈdwɪn.dl

dwindle

Meaning
To diminish gradually in size, amount, or strength; to become progressively smaller.
Example
His savings dwindled due to unexpected expenses.
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 noun ˈkɔː.pəs

corpus

Meaning
A large collection of linguistic data used for language analysis and research.
Example
Linguists use a corpus to analyze language patterns.
C1 noun /səbˈdʒɛkʃən/

subjection

Meaning
the act of bringing someone or something under control or domination
Example
The people suffered under the subjection of a cruel ruler.
C1 adjective /ˈɡæst.li/

ghastly

Meaning
Causing great horror or fear; very unpleasant.
Example
The crime scene was a ghastly sight.
C1 noun /ˈsɪk.əl/

Sickle

Meaning
a tool with a curved metal blade and short handle used for cutting grain crops
Example
The farmer harvested wheat using a traditional sickle.
C1 verb /rɪˈpiːl/

repeal

Meaning
To officially cancel or revoke a law or decision.
Example
The government decided to repeal the outdated law.
C1 noun /ˈfɔːrˌbɛər/

forebear

Meaning
An ancestor, especially one who lived a long time ago.
Example
He often speaks of his forebears with great respect.
C1 noun /ˈɑːrmfʊl/

armful

Meaning
As much as can be carried in one or both arms.
Example
She carried an armful of books into the library.
C1 noun /ˈeɪ.kər.ɪdʒ/

acreage

Meaning
An area of land measured in acres.
Example
The farmer owns a large acreage of fertile land.
C1 noun /ˈtɒpˌsɔɪl/

topsoil

Meaning
the top layer of soil, which is rich in organic matter and nutrients
Example
Farmers rely on healthy topsoil for good crop yields.
C1 noun /ˈleɪˌpɜːrsən/

layperson

Meaning
A person who is not a member of the clergy or does not have specialized knowledge in a subject.
Example
The judge explained the law so that the layperson could understand.
C1 noun /ɪɡˈzɜːr.ʃən/

exertion

Meaning
Using energy or effort to achieve something.
Example
Excessive exertion can lead to fatigue and burnout.
C1 noun /ˌsɛnsɪtaɪˈzeɪʃən/

sensitization

Meaning
The process of becoming sensitive to a substance, situation, or influence.
Example
The doctor warned about the sensitization caused by repeated exposure to chemicals.
C1 adjective /ˈskrɔːni/

scrawny

Meaning
very thin and bony, often looking unhealthy
Example
The scrawny boy could barely lift the heavy bag.
C1 noun /ˌpriːməˈnɪʃən/ or /ˌprɛm-/

premonition

Meaning
a strong feeling that something is about to happen, often something negative
Example
She had a premonition of danger before the trip.
C1 adjective /prɪˈtɛnʃəs/

pretentious

Meaning
Attempting to impress by affecting greater importance, talent, culture, etc., than is actually possessed.
Example
The restaurant was stylish but far too pretentious for my taste.
C1 noun /ˈnjuːtrɪənt dɪˈfɪʃənsi/

nutrient deficiency

Meaning
A lack of essential nutrients required for healthy plant growth, which can result in poor crop development, reduced yields, and increased susceptibility to diseases.
Example
Nutrient deficiency in the soil can reduce crop productivity.
C1 verb /ˌdɪskənˈsɜːrt/

disconcert

Meaning
To unsettle, confuse, or disturb the composure of someone.
Example
The sudden change of plans disconcerted the team.
C1 noun /rɪˌdʒuːvəˈneɪʃən/

rejuvenation

Meaning
The process of restoring something to a former better state, especially referring to renewing soil fertility or revitalizing agricultural land through various restoration practices.
Example
Rejuvenation of soil is necessary for sustainable agriculture.
C1 verb /əˈbeɪt/

abate

Meaning
to become less intense or widespread
Example
The storm began to abate after midnight.
C1 adjective /əˈniːmɪk/

anemic

Meaning
Suffering from anemia; lacking in vitality, strength, or color.
Example
The doctor prescribed iron supplements for her anemic condition.
C1 adjective /ˌɪn.ɪˈfɛk.tʃu.əl/

ineffectual

Meaning
Not producing any or the desired effect; lacking the ability or qualities to achieve a purpose.
Example
The manager’s ineffectual leadership caused the team to lose motivation.
C1 noun /blæk sɔːlt/

Black Salt

Meaning
a type of rock salt with a distinctive sulfuric flavor, commonly used in Indian cuisine
Example
Add a pinch of black salt to enhance the flavor of the fruit salad.
C1 verb /ɡloʊt/

gloat

Meaning
To take pleasure in someone else's misfortune or to show smug satisfaction.
Example
He couldn't help but gloat over his rival's failure.
C1 verb /ʃʌnt/

shunt

Meaning
to move or turn aside; to push or divert from one track to another
Example
The train was shunted onto a different track.
C1 verb /ˈlɪbəreɪt/

liberate

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

darwinism

Meaning
the theory of biological evolution developed by Charles Darwin, emphasizing natural selection
Example
Darwinism revolutionized the way scientists understood the origin of species.
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 adverb /ˈfɜː.vənt.li/

Fervently

Meaning
with passionate intensity; ardently; with great emotion or enthusiasm
Example
She fervently hoped that her dreams would come true.
C1 noun /ˌdɪspɛnˈseɪʃən/

dispensation

Meaning
An exemption from a rule or usual requirement; a system of order, government, or control.
Example
The school granted him a special dispensation to skip the exam due to illness.
C1 noun /fɪˈziːk/

physique

Meaning
the form, size, and development of a person's body
Example
He has an athletic physique due to years of training.
C1 adjective məˈθɒd.ɪ.kəl

methodical

Meaning
Done according to a systematic or established procedure; orderly and systematic.
Example
His methodical research produced reliable results.
C1 noun /ˈmaʊθ.fʊl/

mouthful

Meaning
the amount of food or drink that fills the mouth, or a long and difficult word or phrase
Example
He took a big mouthful of water after the run.
C1 adjective /ˌʌnəˈdɔːrnd/

unadorned

Meaning
Plain and simple; not decorated.
Example
The room was unadorned, with only a table and a chair.
C1 adverb ɪkˌsperɪˈmentəli

experimentally

Meaning
In a way that is based on or derived from experiment and observation rather than theory.
Example
Bose demonstrated findings experimentally.
C1 phrase lɪˈdʒɪt.ɪ.mət sɛlf dɪˈfens

legitimate self-defense

Meaning
Lawful protection of oneself from harm or attack.
Example
The country claimed it was legitimate self-defense.
C1 noun /ˈsaɪd.laɪn dɪˈskʌʃənz/

sideline discussions

Meaning
Informal or secondary conversations that occur outside the main agenda of a formal meeting.
Example
Sideline discussions often lead to agreements.
C1 adjective /ˈɒptɪk/

optic

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