irregularity
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C1 noun /ɪˌreɡjəˈlærɪti/

irregularity

Meaning
lack of regularity or consistency; a deviation from what is normal, expected, or orderly
Example
The audit revealed several financial irregularities in the company’s records.
A2 verb /hɑːrm/

harm

Meaning
to cause damage, injury, or hurt to someone or something
Example
Smoking can harm your health.
C2 adjective /ˈwɜːkmənˌlaɪk/

workmanlike

Meaning
Showing efficient, competent, and practical skill, but without flair or creativity.
Example
The carpenter delivered a workmanlike performance on the project.
B2 noun /ˈkænjən/

canyon

Meaning
A deep gorge, typically one with a river flowing through it.
Example
The Colorado River carved the Grand Canyon over millions of years.
B1 noun /ˈædvərˌtaɪzɪŋ/

advertising

Meaning
the activity of producing advertisements for products or services
Example
The company spends millions on advertising every year.
C2 noun /ˈɔɪl.mən/

Oilman

Meaning
a person who works in the oil industry; someone who sells oil or petroleum products
Example
The oilman discovered a new oil field in the desert.
B2 verb /əˈsɜːrt/

assert

Meaning
to state a fact or belief confidently and forcefully; to insist upon rights or claims
Example
She decided to assert her authority in the meeting.
B2 noun /ˈdʌklɪŋ/

duckling

Meaning
a young duck
Example
The mother duck led her ducklings to the pond.
C1 verb /ɪmˈplɔːr/

implore

Meaning
To beg someone earnestly or desperately to do something.
Example
She implored him to stay with her.
B2 noun /ɪnˌvaɪrənˈmɛntəl ˈmuːvmənt/

environmental movement

Meaning
A social or political movement aimed at protecting the environment and promoting sustainable practices through advocacy, education, and policy changes.
Example
The environmental movement focuses on reducing pollution and protecting ecosystems.
B2 noun /dæm/

Dam

Meaning
a barrier constructed to hold back water and raise its level; a female parent of an animal
Example
The massive dam provides electricity and controls flooding in the region.
C1 adjective /ʌnˈsɪvəlaɪzd/

Uncivilized

Meaning
not developed in terms of civilization; lacking social organization and culture; barbarous
Example
The explorers encountered an uncivilized tribe deep in the Amazon rainforest.
C2 noun /səbˈdʌk.ʃən/

subduction

Meaning
The lateral and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Example
The Pacific Ring of Fire is an area of intense subduction.
C2 noun /rɪˈsɪdɪvɪst/

recidivist

Meaning
A person who repeatedly commits crimes, especially after having been punished.
Example
The police identified him as a recidivist who had been arrested several times before.
B2 adjective /ˈfæktʃuəl/

Factual

Meaning
based on facts; accurate; true
Example
The report contains only factual information.
B2 noun /ˈtɛmpoʊ/

tempo

Meaning
The speed or pace at which a piece of music or activity is performed.
Example
The band played the song at a faster tempo than usual.
B2 noun /həˈræsmənt/

harassment

Meaning
aggressive pressure or intimidation; unwanted and repeated behavior causing discomfort
Example
The company has a strict policy against workplace harassment.
C1 adjective /ɪˈlɪptɪkl/

elliptical

Meaning
Having the shape of an ellipse; also, a style of speech that is concise and sometimes obscure.
Example
The planet follows an elliptical orbit around the sun.
A2 noun /ˈbækɡraʊnd/

Background

Meaning
the circumstances or situation that form the setting; a person's education, experience, or social circumstances
Example
She has a strong background in mathematics and computer science.
C1 adjective /ˌʌn.əˈdʌl.tə.reɪ.tɪd/

Unadulterated

Meaning
not mixed or diluted with any different or extra elements; pure
Example
She felt unadulterated joy when she heard the news.
B2 noun /er/

Heir

Meaning
a person legally entitled to the property or rank of another on that person's death
Example
The young prince was the rightful heir to the throne and would become king someday.
B2 noun /əˈstrɒlədʒi/

astrology

Meaning
the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs
Example
She studied astrology to understand her future.
A2 noun /seɪl/

sale

Meaning
the exchange of a commodity for money; the action of selling something
Example
The store is having a sale on winter clothing.
A2 noun /ˈdrɔːər/

drawer

Meaning
a box-shaped storage compartment that slides in and out of furniture
Example
She kept her jewelry in the top drawer of the dresser.
B2 verb /ˈɪl.ə.streɪt/

illustrate

Meaning
to explain or make something clear by using examples, pictures, or comparisons
Example
The teacher used diagrams to illustrate the concept.
C2 noun /ˌpɛrəɡrɪˈneɪʃən/

peregrination

Meaning
A long journey or wandering, especially on foot.
Example
Their peregrination across Asia lasted two years.
B2 noun /ˈmʌtn/

Mutton

Meaning
meat from an adult sheep; lamb meat
Example
The restaurant serves delicious mutton curry with rice.
A2 verb /beɪk/

bake

Meaning
to cook food using dry heat, usually in an oven
Example
She baked a cake for her friend's birthday.
C2 noun /daɪn/

dyne

Meaning
A unit of force in the centimeter-gram-second (cgs) system equal to 10⁻⁵ newtons.
Example
The physicist measured the force in dynes.
C1 noun /ˈɪŋ.krə.mənt/

Increment

Meaning
an increase or addition, especially one of a series on a fixed scale; a regular increase in salary
Example
He received an annual increment of five percent in his salary this year.
C2 verb /bɪˈliːɡər/

beleaguer

Meaning
to cause difficulties, troubles, or harassment; to surround with military forces
Example
The company was beleaguered by constant complaints from its customers.
B1 adjective /ˈhɑːrmfəl/

Harmful

Meaning
causing or likely to cause harm; damaging
Example
Smoking is harmful to your health.
C2 verb /ˈkælvɪnaɪz/

calvinize

Meaning
to imbue with the principles or doctrines of Calvinism
Example
The preacher sought to calvinize the community with strict teachings.
C2 noun /ˈhɔːθɔːrn/

hawthorn

Meaning
A thorny shrub or small tree with white or pink flowers, often used for hedges.
Example
The garden was lined with blooming hawthorn bushes.
C1 noun /ˌrɛkwɪˈzɪʃən/

requisition

Meaning
An official order laying claim to the use of property or materials; a formal demand or request.
Example
The manager submitted a requisition for new office supplies.
C1 noun /əˈkʌmplɪs/

accomplice

Meaning
a person who helps another commit a crime
Example
The thief was arrested along with his accomplice.
B2 noun /prækˈtɪʃ.ən.ər/

practitioner

Meaning
a person actively engaged in a profession, especially medicine or law
Example
She is a skilled medical practitioner.
B2 adjective /ˌæn.tiˈsoʊ.ʃəl/

Antisocial

Meaning
avoiding social interaction; hostile to social order
Example
His antisocial behavior made it difficult for him to make friends.
C2 noun /ˈəʊpəs/

opus

Meaning
A creative work, especially a large and important piece of music or art.
Example
The composer considered the symphony his greatest opus.
B2 noun /liːk/

Leek

Meaning
vegetable related to onion with long green leaves and white bulb, milder than onion
Example
The soup was made with potatoes and leeks.
C2 verb /ˌdɛlɪˈkwɛs/

deliquesce

Meaning
to become liquid by absorbing moisture from the air
Example
The salt began to deliquesce after being left in the humid room.
A2 adjective/adverb /ˈdeɪli/

daily

Meaning
happening every day
Example
She reads the newspaper daily.
C1 noun /sɪlk klɔːθ/

Silk cloth

Meaning
fabric made from natural fibers produced by silkworms
Example
The bride wore a beautiful dress made of silk cloth.
B2 adjective /ˌʌnrɪˈzɒlvd/

unresolved

Meaning
not solved or settled; remaining undecided or unclear
Example
The dispute remains unresolved despite several meetings.
C2 noun /ˌdɪfəˈrɛnʃə/

differentia

Meaning
A distinguishing characteristic that sets one thing apart from another.
Example
The differentia of humans is their ability to reason abstractly.
C1 adjective /kɔɪ/

coy

Meaning
reluctant to give details or reveal feelings; shy or reserved
Example
She gave a coy smile when asked about her plans.
C1 adjective /ˈɡrɪz.li/

grisly

Meaning
causing horror or disgust
Example
The police discovered a grisly scene at the crime site.
B2 noun /ˌɛdɪˈtɔːriəl/

editorial

Meaning
A newspaper article expressing the opinion of the editor or publisher.
Example
The newspaper published an editorial criticizing government policy.
B1 noun ˌdɪsədˈvæntɪdʒ

disadvantage

Meaning
An unfavorable circumstance or condition that reduces the chances of success or effectiveness.
Example
Urdu's dominance placed Bengalis at a disadvantage.
A2 adjective ˈnɛɡ.ə.tɪv

negative

Meaning
Not desirable or optimistic; harmful or unpleasant.
Example
She had a negative attitude about the upcoming project.
C2 adjective /ˈæməˌtɔːri/

amatory

Meaning
Relating to or expressing sexual love.
Example
The poet’s verses were filled with amatory themes.
B2 verb /ɪnˈdeɪndʒər/

endanger

Meaning
To put someone or something at risk or in danger.
Example
Cutting down forests can endanger many species of animals.
C1 noun /ˈmuːdi.nəs/

moodiness

Meaning
The state of being frequently subject to changes in mood, especially irritability or sadness.
Example
Her moodiness made it difficult to predict how she would react.
B2 adjective /ˈvɜː.bəl/

verbal

Meaning
Relating to or in the form of words; spoken rather than written.
Example
Verbal communication is essential in most situations.
C1 noun /ˈsɜːr.vɪ.tuːd/

Servitude

Meaning
the state of being a slave or completely subject to someone more powerful
Example
Many people fought to escape the servitude imposed by the colonial system.
C2 noun /ˈsʌfərəns/

sufferance

Meaning
patient endurance of pain, hardship, or delay; passive consent or tolerance
Example
He lived in poverty with quiet sufferance.
B2 noun /ˌdɪs.əˈbɪl.ə.ti/

Disability

Meaning
a physical or mental condition that limits a person's movements, senses, or activities
Example
Despite his physical disability, he became a successful athlete in wheelchair racing.
C1 adjective /ˈlɛdʒəbl/

legible

Meaning
clear enough to read
Example
Her handwriting was barely legible.
B2 noun /ˈpref.ər.əns/

Preference

Meaning
a greater liking for one alternative over another or others
Example
She has a preference for classical music over pop music.
B1 noun /rɪˈkɔːdɪŋ/

recording

Meaning
the act or process of recording something
Example
The recording of the interview was clear and loud.
B2 noun /ˈdaɪ.vər/

Diver

Meaning
a type of water bird that dives underwater to catch fish
Example
The diver disappeared beneath the surface to catch a fish.
A2 verb /kɪd/

kid

Meaning
to joke or tease; to speak in a playful manner
Example
I'm just kidding with you.
C2 noun /ˈfaɪəl/

phial

Meaning
a small glass container for liquids, especially medicines
Example
The doctor gave her a phial of medicine.
C2 adjective /ˌæk.rɪˈmoʊ.ni.əs/

acrimonious

Meaning
Bitter and angry, often involving harsh words.
Example
The debate turned acrimonious after the controversial remark.
A2 noun ˌpɒpjuˈleɪʃən

population

Meaning
All the inhabitants of a particular place; the number of people living in a country or region.
Example
The population supported autonomy.
A1 noun /mɑːm/

mom

Meaning
an informal word for mother
Example
My mom makes the best homemade food.
C1 adjective /ˈɑp.ər.ə.tɪv/

Operative

Meaning
Functioning; in effect; working; active;
Example
The new safety protocols became operative immediately after the accident.
C1 noun /spɛk/

speck

Meaning
A very small spot, mark, or particle.
Example
There was a tiny speck of dust on the glass table.
B2 noun /æmˈbæsədər/

Ambassador

Meaning
an accredited diplomat sent by a country as its official representative to a foreign country
Example
The ambassador met with government officials to discuss trade agreements.
B2 adjective /blʌnt/

blunt

Meaning
not sharp; direct and straightforward in speech
Example
Her blunt remarks offended some people.
C1 noun /ˈbɑːr.tər ˌsɪs.təm/

barter system

Meaning
A system of exchange where goods and services are traded directly without using money.
Example
Ancient civilizations used the barter system for trade.
C1 noun/verb /rɪˈpoʊz/

repose

Meaning
a state of rest, sleep, or tranquility; to rest or lie in a peaceful position
Example
After the long journey, she sought repose in the quiet garden.
C2 noun /ˈoʊ.kəm/

oakum

Meaning
loose fibers obtained by untwisting old ropes, used for caulking ships
Example
The shipbuilders used oakum to seal the gaps in the wooden planks.
B1 noun əˈnæl.ə.sɪs

analysis

Meaning
Detailed examination and evaluation of data or information to understand its components and relationships.
Example
Data analysis is crucial for machine learning models.
B2 verb /ˈbraɪtən/

brighten

Meaning
to make something lighter or more colorful; to improve mood or make happier
Example
A few kind words can brighten someone's day.
B1 noun /ˈviːzə/

visa

Meaning
an official authorization or permission to enter, leave, or stay in a country
Example
She applied for a visa to study abroad.
A2 noun /biː/

Bee

Meaning
a flying insect that produces honey and can sting
Example
The bee collected nectar from the flower.
C2 verb /ˈnɪɡəl/

niggle

Meaning
to cause slight but persistent annoyance, discomfort, or worry
Example
A small doubt niggled at her mind.
B1 adjective /ˌdɪs.əˈpɔɪn.tɪd/

Disappointed

Meaning
sad because something has not happened or is not as good as expected
Example
She was disappointed with her exam results.
A2 adjective /loʊ/

low

Meaning
Small in amount, degree, or position; not high.
Example
The river is at its lowest level in years.
C2 verb /ɪkˈstɛnjueɪt/

extenuate

Meaning
to make an offense, fault, or situation seem less serious by providing an excuse or explanation
Example
The lawyer tried to extenuate his client's actions by highlighting his difficult childhood.
B2 noun /ˈɔːltər/

Altar

Meaning
a raised structure on which offerings or sacrifices are made to a deity
Example
The bride and groom stood before the altar during the ceremony.
C1 adjective /ˈrʌs.tɪk/

Rustic

Meaning
simple and unsophisticated; relating to rural areas
Example
The rustic cottage had wooden beams and a thatched roof.
C1 noun /ˈtɛnəmənt/

tenement

Meaning
a large building divided into separate apartments, often in poor condition
Example
The family lived in a crowded tenement in the city.
C2 verb /əˈvaʊ/

avow

Meaning
to openly declare or admit something, often publicly and firmly
Example
He avowed his loyalty to the cause without hesitation.
C1 adjective /dɪˈɡreɪdɪd/

degraded

Meaning
Reduced in quality, dignity, or condition.
Example
The villagers were forced to live in degraded conditions.
C2 adjective /ˈæʒər/

azure

Meaning
A bright blue color like that of a clear sky.
Example
The clear sky was painted in a deep shade of azure.
C2 noun /haɪˈdrɒl.ɪ.sɪs/

hydrolysis

Meaning
A chemical process that breaks down compounds by adding water, splitting complex molecules into simpler forms.
Example
Hydrolysis breaks down complex molecules into simpler forms.
B1 adjective ˈʃɔːrt.tɜːrm

short-term

Meaning
Occurring over or involving a relatively short period of time.
Example
Investing in stocks can yield short-term profits.
B2 noun /ˈhɑːr.bər/

Harbour

Meaning
a place on the coast where vessels may find shelter; a place of safety or refuge
Example
The fishing boats returned safely to the harbour before the storm hit the coastline.
C1 noun /ˌmiːdɪˈeɪʃən/

mediation

Meaning
Intervention between parties to promote reconciliation, settlement, or compromise.
Example
The mediation helped resolve the conflict between the two teams.
B2 noun /ˈbækdrɒp/

backdrop

Meaning
a painted cloth or other structure used behind a stage
Example
The backdrop for the play was a beautiful mountain scene.
C1 noun /ˌəʊvərɪksˌplɔɪˈteɪʃən/

overexploitation

Meaning
The unsustainable use of natural resources at a rate that exceeds their ability to regenerate, leading to depletion and environmental degradation.
Example
Overexploitation of natural resources leads to environmental degradation.
C1 noun ˌlɪt.ɪˈɡeɪ.ʃən

litigation

Meaning
The process of taking legal action; a lawsuit.
Example
The litigation accused the regime of human rights abuses.
A2 noun /ˈeə.ri.ə/

area

Meaning
a particular region or space; the extent of a surface
Example
This area is known for its beautiful parks.
A1 determiner/pronoun /əˈnʌðər/

another

Meaning
one more person or thing of the same type
Example
Can I have another cup of tea?
C1 adjective /ˈɪnbɔːrn/

Inborn

Meaning
existing from birth; natural; inherent
Example
She has an inborn talent for music.
C1 adjective /ˈkræfti/

crafty

Meaning
skilled at achieving goals through cunning or deceit; sly
Example
The crafty fox evaded the hunters again.
B1 noun, verb /ˈɛksˌreɪ/

x-ray

Meaning
a form of electromagnetic radiation used to see inside objects or the human body; to examine or scan using X-rays
Example
The doctor ordered an X-ray to check for a broken bone.
C1 adjective /ˈheɪt.fəl/

Hateful

Meaning
causing or deserving hatred; extremely unpleasant or offensive
Example
His hateful comments hurt everyone's feelings.
A2 noun /mæp/

map

Meaning
a drawing that shows the features of an area of land or sea
Example
He studied the map before starting his journey.
C2 noun /ˌbaɪ.oʊ.rɪˌmiː.diˈeɪ.ʃən/

bioremediation

Meaning
The use of living organisms to neutralize or remove environmental contaminants.
Example
Bioremediation helps remove toxins from polluted soil.
C1 noun /ˈmɒnəʊˌkʌltʃər/

monoculture

Meaning
The agricultural practice of growing only one type of crop over a large area and for many consecutive years, which can lead to increased vulnerability to pests and diseases.
Example
Monoculture can lead to soil depletion and increased pest vulnerability.
C1 noun /ˈrɛpərˌtɔːri/

repertory

Meaning
A collection of works that a company, performer, or institution regularly performs; also a storehouse of information or skills.
Example
The theater has a repertory of classic plays.
C2 adjective /ɪmˈplækəbl/

implacable

Meaning
unable to be appeased, calmed, or pacified
Example
The soldiers faced an implacable enemy who refused to surrender.
B2 verb baɪnd

bind

Meaning
To tie, fasten, or hold together securely.
Example
This force binds quarks together.
C1 adjective /juːˈbɪkwɪtəs/

ubiquitous

Meaning
Existing or being everywhere at the same time.
Example
Social media has become ubiquitous among young people.
C2 verb /ˈɪndjʊˌreɪt/

indurate

Meaning
To harden or make something physically or emotionally tough.
Example
Years of hardship indurated his spirit.
B2 adjective /aʊtˈstændɪŋ/

outstanding

Meaning
extremely good or impressive; not yet resolved or paid
Example
She received an award for her outstanding performance.
B2 noun /ˈbeə.rər/

Bearer

Meaning
a person who carries or brings something; holder of a document
Example
The bearer of this message must deliver it quickly.
C2 noun /ˈæntɪk/

antic

Meaning
a playful, funny, or silly act or gesture
Example
The children laughed at the clown’s antics.
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 /ˌmɛtəˈfɔːrɪkəl/

metaphorical

Meaning
Characteristic of or relating to metaphor; figurative rather than literal.
Example
He used metaphorical language to describe his emotions.
C2 noun ˌmʌltɪˈfæsɪtɪd ˌɪnfərˈmeɪʃən ˈfreɪmwɜːrks

multifaceted information frameworks

Meaning
Complex, comprehensive structures for organizing and managing information that have multiple aspects or dimensions.
Example
Digital literacy involves building multifaceted information frameworks.
C1 noun ˈkɒnfluəns

confluence

Meaning
An act or process of merging.
Example
The confluence of ideas from different cultures created a rich discussion.
C2 noun /niːˈɒlədʒɪzəm/

neologism

Meaning
A newly coined word or expression.
Example
The internet has given rise to many neologisms like 'selfie' and 'hashtag'.
B1 adjective /rɪˈlækst/

relaxed

Meaning
free from tension or stress; calm and comfortable
Example
She felt relaxed after listening to soft music.
C1 noun /dɪˈmiːnər/

demeanor

Meaning
a person's outward behavior or appearance
Example
Her calm demeanor impressed everyone at the meeting.
C1 noun ˌsteɪbəlaɪˈzeɪʃən

stabilization

Meaning
The process of making or becoming stable.
Example
The stabilization of the structure was essential after the earthquake.
C2 adjective /ˈæpəzɪt/

apposite

Meaning
highly appropriate or relevant to what is being discussed
Example
Her remark was particularly apposite to the situation.
C2 verb /ɪnˈɡrɑːft/

ingraft

Meaning
To implant or fix deeply, often used in the sense of grafting an idea or quality.
Example
The teacher tried to ingraft good manners in the students.