derivative
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C1 noun, adjective /dɪˈrɪvətɪv/

derivative

Meaning
Something that is based on another source; in math, a measure of how a function changes.
Example
The film was criticized for being too derivative of earlier works.
C2 noun /ˈpɔːrfəri/

porphyry

Meaning
A hard igneous rock containing crystals, often used for decorative or building purposes.
Example
The ancient Romans used porphyry to make columns and statues.
B2 verb /ˈbɔɪkɑt/

boycott

Meaning
to refuse to buy, use, or participate in something as a protest
Example
They decided to boycott the company's products.
C1 noun /ˈpluː.mɪdʒ/

plumage

Meaning
the feathers covering a bird's body
Example
The peacock's plumage was vibrant and eye-catching.
A1 preposition /ɪn/

in

Meaning
expressing the situation of being enclosed or surrounded by something
Example
She is in the kitchen preparing dinner.
C1 noun /ˈælɪbaɪ/

alibi

Meaning
A claim or piece of evidence that one was elsewhere when an act, typically a crime, was committed.
Example
She had a strong alibi that proved she was at the cinema during the theft.
B2 adjective /ˈklɪn.ɪ.kəl/

clinical

Meaning
Related to the observation and treatment of patients rather than theoretical study.
Example
The doctor conducted a clinical examination.
B2 adjective /ˈprɒmɪnənt/

prominent

Meaning
Important, famous, or easily noticeable.
Example
He is a prominent leader in the community.
C2 noun /ˈmædrɪɡəl/

madrigal

Meaning
A short, lyrical poem set to music, typically from the Renaissance period.
Example
The choir performed a beautiful madrigal from the 16th century.
A2 noun /bɒs/

boss

Meaning
a person who is in charge of a worker, group, or organization
Example
Her boss gave her a new project to complete.
B1 noun /dɪˈvɪʒən/

division

Meaning
the action of separating something into parts; or a large administrative unit
Example
The company has a separate division for research and development.
C1 verb /rɪˈpjuː.di.eɪt/

repudiate

Meaning
to refuse to accept, recognize, or support something
Example
He repudiated the claim that he was involved in the scandal.
C1 adjective /dɪsˈɪntrəstɪd/

disinterested

Meaning
not influenced by personal interest; impartial or neutral
Example
The judge remained disinterested in the case.
A2 noun /mjuˈziːəm/

museum

Meaning
a building in which objects of historical, scientific, artistic, or cultural interest are stored and exhibited
Example
We visited the art museum to see the new exhibition.
C1 adjective ˈeɪlɪəneɪtɪd

alienated

Meaning
Feeling isolated or estranged; disconnected from others or society.
Example
Alienated students are more prone to delinquency.
C1 verb /ˈstaɪfəld/

stifled

Meaning
to suppress, hold back, or prevent something from happening
Example
He stifled a laugh during the serious meeting.
C2 noun /ˌpɛdəˈɡɒdʒɪks/

pedagogics

Meaning
the science or art of teaching
Example
He studied pedagogics to become a better teacher.
A2 verb /ˈɑːrɡjuː/

argue

Meaning
to have a disagreement; to present reasons for or against
Example
They often argue about politics.
C2 verb /ɪnˈtɜːrpəˌleɪt/

interpolate

Meaning
To insert something, often words, into a text or conversation; to estimate values between known data points.
Example
The editor interpolated a missing paragraph into the manuscript.
B1 adverb /ˈspeʃ.əl.i/

Specially

Meaning
for a particular purpose; especially; specifically
Example
This gift was specially made for you.
C1 noun /ˌpændəˈmoʊniəm/

pandemonium

Meaning
Wild and noisy disorder or confusion; uproar.
Example
When the concert was canceled, pandemonium broke out among the crowd.
B2 noun /nɪˌɡoʊ.siˈeɪ.ʃən/

Negotiation

Meaning
discussion aimed at reaching an agreement; bargaining
Example
The negotiation between the two companies lasted for weeks.
C2 noun /ɪɡˈzækʃən/

exaction

Meaning
the act of demanding or obtaining something, especially unfairly
Example
The peasants suffered under the king's heavy exactions.
B2 verb /prɪˈzɜːv/

preserve

Meaning
to keep something in its original state; to protect from harm or decay
Example
We must preserve our natural environment.
C1 verb, noun /ɡɔːrdʒ/

gorge

Meaning
to eat greedily; a narrow valley between mountains or hills
Example
They gorged themselves on pizza after the hike.
B2 noun /brɪŋk/

brink

Meaning
The edge or point just before a significant event or change.
Example
The company was on the brink of bankruptcy.
A2 adjective /ˈmeɪdʒər/

major

Meaning
important, serious, or significant
Example
Climate change is a major concern for the world.
C1 adjective /ˈsliːzi/

sleazy

Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
B1 verb /ˈfraɪtən/

frighten

Meaning
to cause fear or alarm in someone
Example
The loud noise frightened the child.
A2 noun /məˈʃiːn/

machine

Meaning
A device with moving parts that uses energy to perform a particular task.
Example
This washing machine is very efficient.
C2 verb /ˈʌndjʊleɪt/

undulate

Meaning
To move with a smooth, wave-like motion.
Example
The snake undulated across the sand.
C1 phrase ˈiː.kəʊˌsɪs.təm kəˈlæps

ecosystem collapse

Meaning
The complete breakdown of an ecological system, resulting in the inability to maintain its structure and function.
Example
Unchecked deforestation can lead to ecosystem collapse.
C1 noun /ˌtɛstɪˈməʊnɪəlz/

testimonials

Meaning
Written or spoken statements of praise or recommendation from clients or customers.
Example
Positive testimonials can enhance a company's reputation.
B2 noun/verb /kjuː/

cue

Meaning
A signal or prompt for action; to give a signal.
Example
The actor waited for his cue before entering the stage.
B2 adverb /ˈstɛdɪli/

steadily

Meaning
in a regular and continuous way; without stopping or changing
Example
The company's profits have been increasing steadily.
B1 noun /ˈkaʊn.səl/

council

Meaning
an assembly of people chosen or elected to make decisions or advise on matters
Example
The city council voted to improve public transportation.
C2 adjective /kənˈsʌmptɪv/

consumptive

Meaning
Relating to or characterized by consumption; historically used to describe someone suffering from tuberculosis.
Example
The doctor advised against consumptive habits.
A2 noun /stɛp/

step

Meaning
a movement made by lifting one foot and putting it down in a new position
Example
She took a step towards the door.
C2 noun /bɪsk/

bisque

Meaning
A rich, creamy soup made from shellfish.
Example
We ordered lobster bisque at the restaurant.
C2 noun /ˌfɔːrɔːrdɪˈneɪʃən/

foreordination

Meaning
the act of determining something in advance; predestination
Example
The doctrine of foreordination suggests that events are fixed by divine will.
C1 noun /moʊˈtiːf/

motif

Meaning
A recurring theme, subject, or idea in a work of art or literature.
Example
The motif of love is central to the novel.
C1 noun /dɪˈkɔː.rəm/

Decorum

Meaning
behavior in keeping with good taste and propriety; dignified and appropriate conduct
Example
The diplomat maintained perfect decorum throughout the heated negotiations.
B1 noun /ˌsaʊθˈwɛst/

southwest

Meaning
the direction that is between south and west; a region in that direction
Example
They traveled to the southwest of the country for their vacation.
C1 verb /ɪˈlæps/

elapse

Meaning
to pass or go by, usually referring to time
Example
Several hours elapsed before he finally returned home.
A1 adjective/verb/adverb /friː/

free

Meaning
Not under the control or in the power of another; able to act or be done as one wishes.
Example
The children are free to play outside.
A1 noun /eər/

Air

Meaning
the invisible gaseous substance surrounding the earth; a mixture mainly of oxygen and nitrogen
Example
Fresh air is essential for good health.
B1 verb /kənˈɡrætʃʊleɪt/

congratulate

Meaning
to praise someone for an achievement or for a special occasion
Example
I want to congratulate you on your promotion.
B2 adjective /ˈjuːθfəl/

Youthful

Meaning
having the qualities of youth; energetic and fresh
Example
Her youthful energy impressed everyone at work.
C2 adjective /ˈθʌroʊˌɡoʊɪŋ/

thoroughgoing

Meaning
carried out to the full extent; absolute and complete
Example
She is a thoroughgoing professional in every sense.
A2 adjective /laɪt ɡriːn/

Light green

Meaning
a pale shade of green color; not dark green
Example
She wore a light green dress to the garden party.
C2 noun /ˌsuː.pər.əˈbʌn.dəns/

superabundance

Meaning
An excessive or overflowing amount of something.
Example
The garden was filled with a superabundance of flowers.
B2 noun /ˈpeɪtrən/

patron

Meaning
a person who gives financial or other support to a person, organization, or cause
Example
The library is supported by generous patrons.
B1 adjective /ˈblʌdi/

bloody

Meaning
covered in, involving, or containing blood; also used informally for emphasis in British English.
Example
The soldier returned from battle with a bloody arm.
C2 noun /ɡrænˈtiː/

grantee

Meaning
A person or organization that receives a grant or benefit.
Example
The grantee must submit a progress report every six months.
B1 noun /ˈvaɪtəmɪn/

vitamin

Meaning
a natural substance needed by the body to stay healthy
Example
Fruits and vegetables are rich sources of vitamins.
C1 verb /bæsk/

bask

Meaning
to lie in warmth and light; to enjoy something pleasurable
Example
The cat basks in the sunny window.
C2 adjective /ˌoʊvərˈwiːnɪŋ/

overweening

Meaning
excessively arrogant or prideful
Example
His overweening pride cost him many friends.
B1 adverb /ˈruːdli/

Rudely

Meaning
in an impolite or discourteous manner
Example
He rudely interrupted the speaker during the presentation.
C2 noun /prəˈpɪŋkwɪti/

propinquity

Meaning
the state of being close to someone or something; proximity
Example
The propinquity of their houses made them close friends.
C1 noun /ˌmiːtiəˈrɒlədʒi/

meteorology

Meaning
The scientific study of the atmosphere and weather.
Example
He chose to specialize in meteorology to study weather patterns.
C1 noun /ˈstɪmjʊlənt/

stimulant

Meaning
A substance that raises levels of physiological or nervous activity in the body.
Example
Coffee is a common stimulant that helps people stay awake.
A2 noun /klʌb/

club

Meaning
an organization of people with a common interest; also a place for social gatherings or entertainment
Example
He joined the local tennis club to meet new people.
B1 noun ˌɔː.ɡən.aɪˈzeɪ.ʃən

organization

Meaning
An organized group of people with a particular purpose, such as a business or government department.
Example
The organization was officially inaugurated in 2024.
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 /əˈluːd/

allude

Meaning
To refer to something indirectly or casually.
Example
The professor alluded to Shakespeare during the lecture.
C1 verb /ʌnˈsɛtl/

unsettle

Meaning
To disturb or make someone feel anxious or uneasy.
Example
The sudden news unsettled the entire community.
C1 verb rɪˈplɛn.ɪʃ

replenish

Meaning
Fill something up again.
Example
Drinking water helps replenish lost fluids in the body.
B2 adjective /ˈvʌl.ɡər/

Vulgar

Meaning
lacking sophistication or good taste; crude and offensive in language or behavior
Example
His vulgar language offended everyone at the dinner party.
B2 verb /dɪsˈkloʊz/

disclose

Meaning
to reveal or make information known; to expose
Example
The company must disclose all financial information.
A1 preposition /ˈʌndər/

under

Meaning
in or to a lower position than something
Example
The cat is under the table.
B2 noun ˈfreɪm.wɜːk

framework

Meaning
An essential supporting structure of a building, vehicle, or object; a basic structure underlying a system, concept, or text.
Example
A strong framework is vital for governance.
C1 verb /ˌɪntəˈsɛkt/

intersect

Meaning
to cross or pass through each other
Example
The two roads intersect at the city center.
B1 noun /kæˈʃɪər/

Cashier

Meaning
a person who handles payments and transactions in a store or bank
Example
The cashier scanned all the items and calculated the total bill.
C1 noun/verb /ˈskɜːrmɪʃ/

skirmish

Meaning
a small or brief fight between groups of soldiers; to engage in such a fight
Example
The soldiers got into a skirmish near the border.
A1 verb /læst/

last

Meaning
to continue to exist or happen for a period of time; to endure
Example
The meeting lasted for three hours.
C1 verb, noun /læɡ/

lag

Meaning
To fall behind in movement, progress, or development; a delay or period of falling behind.
Example
The old computer tends to lag when running new software.
C1 noun /ˈfoʊk.lɔːr/

folk-lore

Meaning
The traditional beliefs, customs, stories, songs, and practices of a community, passed down through generations.
Example
Bangladeshi folk-lore is rich with myths and legends.
C1 verb əˈkruː

accrue

Meaning
To accumulate or receive (payments or benefits) over time.
Example
Interest accrues on the savings account every month.
C2 adjective /ˌɪnˌɑːpərˈtuːn/

inopportune

Meaning
Happening at a bad or inconvenient time.
Example
His call came at the most inopportune moment.
C1 adjective /ɪˈnɔːrdənət/

inordinate

Meaning
Excessive or unusually large in degree.
Example
She spent an inordinate amount of time on her phone.
C2 noun /ˈmeɪsə/

mesa

Meaning
An isolated flat-topped hill with steep sides, found in arid regions.
Example
The hikers stopped to admire the mesa rising above the desert floor.
B2 noun /əˈnælədʒi/

analogy

Meaning
A comparison between two things for the purpose of explanation or clarification.
Example
The teacher used the analogy of a tree to explain the structure of an essay.
C2 adjective /ˈeksɪkrəbl/

execrable

Meaning
Extremely bad or unpleasant.
Example
The movie was so execrable that many people left the theater early.
C2 verb, noun /ˈkweɪvər/

quaver

Meaning
To shake or tremble in speaking, typically through nervousness or emotion.
Example
Her voice quavered as she spoke before the crowd.
C1 noun /səˈrɛn.ɪ.ti/

serenity

Meaning
The state of being calm, peaceful, and untroubled.
Example
Meditation helps in achieving inner serenity.
C1 verb /ˈluːbrɪkeɪt/

lubricate

Meaning
to apply oil or grease to reduce friction between surfaces
Example
The mechanic lubricated the car engine parts.
B2 verb /ˌʌndərˈɛstɪmeɪt/

underestimate

Meaning
To judge something as less important or smaller than it really is.
Example
Never underestimate the power of teamwork.
C2 noun/adjective /rɪˈmɒnstrənt/

remonstrant

Meaning
A person who makes a forceful protest (noun); protesting or objecting (adjective).
Example
He was a remonstrant voice in the assembly.
A2 noun; gerund /ˈwɒʃɪŋ/

washing

Meaning
the act of cleaning with water or other liquid; clothes or items that are being washed
Example
Washing clothes regularly helps maintain hygiene.
C2 adjective /ˌpɑːrsɪˈmoʊniəs/

parsimonious

Meaning
unwilling to spend money or use resources; stingy
Example
The company was too parsimonious to invest in better equipment.
C2 adjective /rɪˈfʌldʒənt/

refulgent

Meaning
Shining brightly; radiant.
Example
The refulgent sun lit up the entire valley.
B2 noun /ɪkˈspen.dɪ.tʃər/

expenditure

Meaning
The action of spending funds; an amount of money spent.
Example
Managing expenditure is critical for budgeting.
B1 noun /ˈdaɪ.ə.lɑːɡ/

Dialogue

Meaning
a conversation between two or more people; discussion aimed at exploration of a subject
Example
The political leaders engaged in meaningful dialogue to resolve the conflict.
B1 noun ˈklaɪ.mət tʃeɪndʒ

climate change

Meaning
A change in global or regional climate patterns, attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.
Example
Climate change is causing more natural disasters.
C2 adjective /sɛpˈtɛnɪəl/

septennial

Meaning
Occurring every seven years.
Example
The festival is a septennial tradition in the village.
B2 verb /kəmˈpaɪl/

compile

Meaning
to collect information or material and put it together in a list, report, or book
Example
She compiled the research data into a detailed report.
C2 noun /ˈhɛksəˌpɒd/

hexapod

Meaning
An insect or other organism with six legs.
Example
The scientist observed a hexapod crawling on the leaf.
C1 noun /ˌkɔr.diˈæl.ɪ.ti/

Cordiality

Meaning
sincere affection and kindness; warm and friendly behavior
Example
The host's cordiality made all the guests feel welcome and comfortable.
C2 verb /skʌlk/

skulk

Meaning
to move or hide secretly, often because you are planning something bad or are feeling guilty
Example
He tried to skulk in the shadows to avoid being seen.
C1 noun ɪnˌvaɪ.rənˈmen.təl ˌtræns.fəˈmeɪ.ʃən

environmental transformation

Meaning
A significant change in environmental conditions or ecological systems.
Example
The city demonstrates environmental transformation.
C2 noun /rɪˈfrɪndʒənsi/

refringency

Meaning
The ability of a substance to bend light; refractive power.
Example
Glass has a higher refringency than water.
A1 pronoun /aɪ/

i

Meaning
used by a speaker to refer to himself or herself
Example
I am learning English every day.
C1 noun /nɪl/

Nil

Meaning
nothing; zero; no amount
Example
His chances of winning were nil after the scandal.
C2 noun /noʊl/

Knoll

Meaning
a small rounded hill or mound
Example
The old oak tree stood majestically on top of the grassy knoll.
A2 noun /ˈsɪə.ri.əl/

cereal

Meaning
a common breakfast food made from processed grains such as wheat, oats, or corn
Example
She eats a bowl of cereal every morning before work.
B2 noun /səˈspens/

Suspense

Meaning
a feeling of excited or anxious uncertainty about what will happen
Example
The movie kept us in suspense until the very end.
C1 noun /ˈkɜːrlər/

curler

Meaning
A small roller used for curling hair.
Example
She used a curler to style her hair for the party.
C1 adjective /ˈtæksɪŋ/

taxing

Meaning
Requiring a lot of effort; physically or mentally demanding.
Example
Preparing for the exam was a taxing experience.
B1 verb /əˈtʃiːv/

achieve

Meaning
to successfully bring about or reach a desired goal or result
Example
She worked hard to achieve her dream of becoming a doctor.
C2 noun /ɪɡˈzɛmplɑːr/

exemplar

Meaning
A model or pattern to be copied or imitated.
Example
She is an exemplar of kindness and generosity.
B1 verb /sɪˈlekt/

select

Meaning
to choose from a number of alternatives; to pick out
Example
Please select your favorite color.
A2 noun ˈmuːv.mənt

movement

Meaning
A group of people working together to advance their shared political, social, or artistic ideas.
Example
The movement aimed to ensure equal rights.
C1 noun /ˈtruː.ənt/

Truant

Meaning
a student who stays away from school without permission; a person who shirks duty
Example
The principal called the parents when their child was caught playing truant.
C2 verb /ˈærəˌɡeɪt/

arrogate

Meaning
To claim or take something without justification.
Example
The dictator arrogated all powers to himself.
B2 noun kənˈtrækʃən

contraction

Meaning
The process of becoming smaller; a decrease in size or quantity.
Example
The economic contraction resulted in a rise in unemployment.
B2 noun /ˈvɜː.tʃuː/

Virtue

Meaning
behavior showing high moral standards; a good or useful quality of a thing
Example
Honesty is considered the highest virtue in many cultures.
B2 adverb /ˈɒdli/

oddly

Meaning
in a strange or unusual way; unexpectedly
Example
Oddly, he didn’t seem upset by the bad news.
B1 adjective ˈsen.sɪ.tɪv

sensitive

Meaning
Quick to detect or respond to slight changes, signals, or influences.
Example
Sensitive systems require precise handling.
A1 noun /kaʊ/

Cow

Meaning
a large farm animal kept for milk or meat
Example
The cow produces fresh milk every morning.
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.
B1 noun /ˌɑk.jəˈpeɪ.ʃən/

Occupation

Meaning
a job or profession; the action of taking control of a place
Example
Teaching is her chosen occupation.