centrifuge
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C1 noun /ˈsɛntrɪˌfjuːdʒ/

centrifuge

Meaning
A machine that spins substances at high speed to separate different components.
Example
The lab technician used a centrifuge to separate the blood cells from the plasma.
C2 adjective /ˈstɪdʒiən/

stygian

Meaning
extremely dark, gloomy, or forbidding
Example
They walked through the stygian cave with torches.
C1 noun ˌɛkstərˈnælɪtiz

externalities

Meaning
A side effect or consequence of an industrial or commercial activity.
Example
Pollution is a negative externality of industrialization.
B2 adjective /ˈkɒn.trər.i/

Contrary

Meaning
opposite in nature, direction, or meaning; completely different
Example
Contrary to popular belief, cats can be very social animals.
C2 adverb /ʌnˈɜːrɪŋli/

unerringly

Meaning
Without making any mistakes; always accurate
Example
The archer aimed unerringly at the target.
C1 noun, adjective /dɪˈfiːtɪst/

defeatist

Meaning
A person who expects or is excessively ready to accept failure; showing a tendency to expect defeat.
Example
His defeatist attitude discouraged the rest of the team.
C2 noun /ˈflɛdʒlɪŋ/

fledgeling

Meaning
A young bird that has just developed its feathers and is learning to fly; a beginner.
Example
The fledgeling was trying hard to take its first flight.
A2 noun /boʊn/

Bone

Meaning
any of the hard parts inside a human or animal that make up its frame
Example
The doctor said the bone was completely healed after the fracture.
B1 noun /mæs/

mass

Meaning
a large body of matter with no specific shape; a large number of people or things
Example
A huge mass of people gathered in the square.
C2 adjective /ˌsuːdəˈrɪfɪk/

sudorific

Meaning
causing or increasing sweating
Example
The doctor prescribed a sudorific drug to help reduce the fever.
C1 noun/verb /ˈætrəfi/

atrophy

Meaning
a decrease in size or wasting away of a body part, tissue, or ability due to lack of use
Example
Without regular exercise, muscles may atrophy over time.
C2 adjective /ʌnˈɡeɪnli/

ungainly

Meaning
Awkward, clumsy, or lacking grace in movement or appearance.
Example
The tall boy moved in an ungainly manner.
B1 noun /ˈel.boʊ/

Elbow

Meaning
the joint between the forearm and the upper arm
Example
He hurt his elbow while playing tennis.
C1 noun rɪˌdʒɛnəˈreɪʃən

regeneration

Meaning
Renewal, growth and development of cells, tissues or energy
Example
Proper rest allows muscle regeneration after exercise.
C1 adjective /ˈmɜːki/

murky

Meaning
Dark, gloomy, and difficult to see through; obscure.
Example
We avoided swimming in the murky river.
C1 verb /ˌmɪsˈmænɪdʒ/

mismanage

Meaning
to handle or control something badly or inefficiently
Example
The company went bankrupt because it was mismanaged for years.
B2 noun /ˈlænd.leɪ.di/

Landlady

Meaning
a woman who rents out land, a building, or accommodation; a female property owner
Example
The friendly landlady provided fresh towels and showed us around the apartment.
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 noun /ˈvɜːrtɛks/

vertex

Meaning
The highest point; the top or the apex.
Example
The climber reached the vertex of the mountain.
B2 adjective /ɪkˈsten.sɪv/

Extensive

Meaning
covering or affecting a large area; comprehensive; wide-ranging
Example
The company conducted extensive research before launching the new product.
B2 noun /ˈɛmɪɡrənt/

emigrant

Meaning
A person who leaves their own country to settle permanently in another.
Example
The emigrant started a new life in Canada.
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.
B2 noun ˈɡriːn.haʊs ɪˌfɛkt

greenhouse effect

Meaning
The trapping of the sun's warmth in a planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
Example
The greenhouse effect is increasing global temperatures.
C1 adjective /məˈlaɪn/

Malign

Meaning
evil in nature or effect; harmful; slanderous
Example
He spread malign rumors about his colleague.
B2 adjective /ɪˈmætʃʊr/

Immature

Meaning
not fully developed; lacking emotional or intellectual development; childish
Example
His immature behavior during the meeting disappointed everyone.
A1 noun /pəˈteɪ.toʊ/

Potato

Meaning
a round white vegetable with a brown or red skin that grows underground
Example
She boiled potatoes for dinner.
C1 noun /frɪˈvɒləti/

frivolity

Meaning
Lack of seriousness; silly or trivial behavior.
Example
The teacher discouraged frivolity during the exam.
C2 noun /ˈbʊljən/

bullion

Meaning
Gold or silver in bulk before being coined or made into jewelry.
Example
The bank stores gold bullion in its vaults.
C2 verb /deɪn/

deign

Meaning
to do something considered beneath one's dignity
Example
The king did not deign to reply to the commoner.
C2 noun /pɛnˈtæmɪtər/

pentameter

Meaning
A line of verse consisting of five metrical feet.
Example
Shakespeare often wrote his plays in iambic pentameter.
C2 adjective /ræpˈtɔːriəl/

raptorial

Meaning
Relating to birds of prey or predatory behavior.
Example
The eagle is a raptorial bird with sharp talons.
B1 adjective /ʌnˈnoʊn/

Unknown

Meaning
not known or identified; unfamiliar
Example
The author of this letter remains unknown.
C1 noun /sʌˈmeɪʃən/

summation

Meaning
The process of adding things together; a summary of points.
Example
The lawyer gave a powerful summation of the case.
C2 noun /ˌɪntərˈrɛɡnəm/

interregnum

Meaning
A period between rulers or governments when normal leadership is suspended.
Example
The country faced instability during the interregnum after the king’s death.
C2 noun /ˈrɛk.tɪ.tjuːd/

rectitude

Meaning
Morally correct behavior or thinking; righteousness and integrity.
Example
His rectitude earned him respect in society.
C1 verb /ˈskʌt.əl/

scuttle

Meaning
To run hurriedly with short, quick steps; or to deliberately sink a ship.
Example
The children scuttled back to their seats when the teacher entered.
C1 noun /əˈkwɪtl/

acquittal

Meaning
a judgment that a person is not guilty of the crime with which they have been charged
Example
The acquittal of the accused shocked the public.
C1 adjective ˌprɒb.ə.bɪˈlɪs.tɪk

probabilistic

Meaning
Based on probability; involving chance or statistical likelihood.
Example
The model follows a probabilistic approach to predictions.
B1 noun /ˌkɒmbɪˈneɪʃən/

combination

Meaning
The act of joining or mixing two or more things together.
Example
This dish is a perfect combination of sweet and spicy flavors.
C1 adjective /ədˈhiːsɪv/

Adhesive

Meaning
আঠালো; চটচটে;
Example
The adhesive tape stuck firmly to the wall.
C2 adjective /ˈlæm.ən.tə.bəl/

lamentable

Meaning
deserving to be criticized or regretted; unfortunate
Example
The team’s lamentable performance disappointed their fans.
A2 adjective /kəˈrɛkt/

correct

Meaning
free from error; accurate
Example
The answer she gave was correct.
B2 verb /rɪˈnuː/

renew

Meaning
to make something new again or extend its period of validity
Example
I need to renew my passport before traveling.
C1 verb /diːˈfɒrɪst/

deforest

Meaning
to clear an area of trees, usually on a large scale
Example
The region has been heavily deforested for agriculture.
C2 noun /ˈskæb.ərd/

scabbard

Meaning
A sheath for the blade of a sword or dagger, typically made of leather or metal.
Example
The knight drew his sword from the scabbard.
C2 verb /ˌɛvəˈnɛs/

evanesce

Meaning
To disappear gradually; to fade away.
Example
The mist began to evanesce as the sun rose higher.
A2 noun ˌtræn.spɔːrˈteɪ.ʃən

Transportation

Meaning
The movement of people or goods from one place to another.
Example
Efficient transportation reduces costs.
C2 noun /ˈstrɪndʒənsi/

stringency

Meaning
the quality of being strict, precise, or severe
Example
The stringency of the new rules surprised everyone.
C2 adjective /ˈhæŋ.dɔːɡ/

hangdog

Meaning
looking or feeling ashamed, guilty, or defeated.
Example
He gave me a hangdog look after being caught lying.
B2 noun /ˌvʌl.nər.əˈbɪl.ə.ti/

vulnerability

Meaning
The quality or state of being exposed to the possibility of being attacked or harmed.
Example
Addressing vulnerability is crucial for stability.
B2 noun /ˈsɛnətər/

senator

Meaning
a member of a senate, especially in a legislative body
Example
The senator spoke passionately about environmental policies.
C1 verb /əbˈstrʌkt/

obstruct

Meaning
to block or hinder progress; to prevent or impede movement
Example
The fallen tree obstructed the road for several hours.
C1 noun /rɪˈvɜːrʒən/

reversion

Meaning
the act of returning to a previous state or condition
Example
The new policy marked a reversion to traditional methods.
C1 noun /ˌɪnˈdɪsəplɪn/

indiscipline

Meaning
lack of discipline or self-control; failure to obey rules or maintain order
Example
Indiscipline among the students disrupted the learning environment.
C1 verb trænˈsɛnd

transcend

Meaning
To go beyond the limits of something; to surpass or exceed
Example
His effort to transcend traditional methods was commendable.
B2 noun /ˈmɔːr.nɪŋ/

Mourning

Meaning
the expression of deep sorrow for someone who has died
Example
The family is in mourning for their grandmother.
A2 noun /ˈpeɪn.tər/

Painter

Meaning
a person who paints pictures or decorates buildings
Example
The painter created a beautiful landscape on canvas.
B2 noun /ˈpʌŋk.tʃər/

Puncture

Meaning
a small hole in a tire that causes air to escape
Example
I had to fix a puncture in my bicycle tire this morning.
B2 verb/noun /ˌdɪsrɪˈɡɑːrd/

disregard

Meaning
To ignore something; lack of consideration or respect for something.
Example
He disregarded the warning signs and kept driving.
C2 verb /fɔːrˈboʊd/

forebode

Meaning
To predict or have a strong inner feeling of a future misfortune or evil.
Example
Dark clouds forebode a coming storm.
C2 adjective /ˈtjuːmɪd/

tumid

Meaning
Swollen, enlarged, or pompous in style.
Example
His tumid prose was difficult to read.
C2 noun /ˈsɪkəfənt/

sycophant

Meaning
A person who acts obsequiously toward someone important in order to gain advantage.
Example
The manager was surrounded by sycophants who agreed with everything he said.
B2 noun /ˈɔːrnəmənt/

ornament

Meaning
A decorative object that adds beauty to something.
Example
The Christmas tree was decorated with colorful ornaments.
C2 adjective /ˈɒf.biːt/

offbeat

Meaning
Unusual, unconventional, or different from the norm.
Example
She has a very offbeat sense of humor.
C1 adverb /ˌkɒnfɪˈdenʃəli/

Confidentially

Meaning
in a confidential manner; secretly; privately
Example
The information was shared confidentially between the two managers.
C1 noun /ˈskaɪ.lɑːrk/

Sky-Lark

Meaning
a small brown bird known for singing while flying high in the sky
Example
The skylark sang beautifully as it soared above the meadow.
B2 noun /ˈpæm.flət/

pamphlet

Meaning
a small booklet or brochure containing information or arguments about a subject
Example
The health department distributed a pamphlet about nutrition.
C1 noun/verb /brʊk/

brook

Meaning
As a noun: a small natural stream; As a verb: to tolerate or endure something
Example
The village was built near a clear brook.
C1 noun /ˈwɪŋˌspæn/

wingspan

Meaning
the distance from the tip of one wing to the tip of the other wing
Example
The eagle has an impressive wingspan of over two meters.
C1 verb /ʃʌn/

Shun

Meaning
to deliberately avoid or stay away from someone or something
Example
He shuns public attention and prefers privacy.
C1 noun /ˈpɪɡmənt/

pigment

Meaning
a natural or artificial substance used to give color to something
Example
The artist mixed different pigments to create the perfect shade of blue.
A1 noun /bed/

Bed

Meaning
a piece of furniture for sleep or rest, typically a framework with a mattress
Example
She made her bed every morning before going to work.
B2 adjective /ˈveɪ.kənt/

Vacant

Meaning
empty; not occupied; available
Example
There is a vacant apartment on the second floor.
B1 noun /taɪl/

tile

Meaning
a flat piece of baked clay or other material used for covering roofs, floors, or walls
Example
The kitchen floor is covered with ceramic tiles.
A2 verb /ˈtʃeɪndʒɪŋ/

changing

Meaning
The act of becoming different; ongoing process of change.
Example
The weather is changing rapidly.
C2 noun /ˈpeɪpəsi/

papacy

Meaning
The office or authority of the Pope in the Roman Catholic Church.
Example
The papacy played a significant role in medieval European politics.
C2 noun /ˈfɒpəri/

foppery

Meaning
Foolish or excessive concern with one's appearance or manners; pretentious behavior.
Example
His obsession with fashion was dismissed as mere foppery.
B2 noun /kənˈsʌmp.ʃən/

Consumption

Meaning
The using up of a resource or the amount of a product consumed by consumers.
Example
High energy consumption leads to increased electricity bills.
B2 noun /ˈɡləʊ.bəl piːs/

global peace

Meaning
Worldwide harmony and absence of conflict between nations.
Example
Global peace requires collective efforts.
A2 verb /ɪkˈsaɪt/

excite

Meaning
to cause strong feelings of enthusiasm or eagerness
Example
The idea of traveling abroad excites her.
A2 verb /səˈpəʊz/

suppose

Meaning
to assume or believe something is true without proof
Example
I suppose she will be here soon.
C2 noun /ˈneɪˌseɪ.ɪŋ/

naysaying

Meaning
The act of expressing negative or pessimistic views.
Example
His constant naysaying discouraged the team.
B2 noun /ˈpæd.i/

Paddy

Meaning
rice in its natural state before processing; a field where rice is grown
Example
The farmers worked hard in the paddy fields during harvest season.
B1 verb /əˈweɪk/

awake

Meaning
to stop sleeping; to become conscious or alert
Example
I awake every morning at six o'clock.
C1 noun /tɪnt/

tint

Meaning
a slight shade or variation of a color
Example
The walls were painted white with a slight blue tint.
C1 adjective /ˈswoʊlən/

swollen

Meaning
Enlarged or puffed up, usually due to injury, inflammation, or fluid accumulation
Example
Her ankle was swollen after she twisted it during the hike.
B2 noun /plʌɡ/

plug

Meaning
a device used to connect or block an opening
Example
She inserted the plug into the socket.
C2 noun /ˈmænˌtræp/

man-trap

Meaning
A trap designed to catch or injure humans; informally, a woman considered dangerously attractive.
Example
The old castle had a man-trap at the entrance.
C1 adjective /ˌjuːnɪˈlætərəl/

Unilateral

Meaning
one-sided; involving only one party
Example
The country made a unilateral decision to withdraw from the treaty.
C2 adjective /ɛɡˈzɪɡjuəs/

exiguous

Meaning
small in amount; scanty or inadequate
Example
They survived on exiguous rations during the journey.
B2 noun ˈbleɪzə

blazer

Meaning
A coloured jacket worn by members of a club, team, or school as part of a uniform.
Example
He looked sharp in his navy blue blazer at the event.
C1 verb ˈrɛk.tɪ.faɪ

rectify

Meaning
To correct mistakes or make something right.
Example
The company took steps to rectify its financial mistakes.
B2 noun /ˈhʌrɪkən/

hurricane

Meaning
A violent tropical storm with very strong winds and heavy rain.
Example
The hurricane destroyed hundreds of homes along the coast.
C1 noun /ˈpraɪ.mər/ (US), /ˈprɪm.ər/ (UK)

primer

Meaning
A basic introductory book or a substance used to prepare a surface for painting.
Example
He read a primer on programming before starting his course.
C1 noun /ˈpɔː.pəs/

Porpoise

Meaning
a small toothed whale with a low triangular dorsal fin and a blunt rounded snout
Example
The porpoise jumped gracefully out of the water.
C1 adjective /pərˈsweɪdəbl̩/

persuadable

Meaning
capable of being convinced or influenced to do something
Example
She was easily persuadable when it came to trying new foods.
B1 noun ˈkraɪsɪs

crisis

Meaning
A time of intense difficulty, trouble, or danger.
Example
The financial crisis affected global markets.
B2 adjective /ˈlɔɪ.əl/

Loyal

Meaning
faithful; devoted; trustworthy
Example
He remained loyal to his friends through difficult times.
C1 adjective /ˌɔː.riˈen.təl/

Oriental

Meaning
relating to the countries of East Asia; eastern
Example
The museum has a beautiful collection of oriental art.
C1 noun /dɪˈvaɪzər/

divisor

Meaning
A number by which another number is divided.
Example
In the equation 12 ÷ 3, the number 3 is the divisor.
C2 adjective /ˈdɛdˌpæn/

deadpan

Meaning
Deliberately impassive or expressionless in manner.
Example
She delivered the joke in a completely deadpan voice.
B2 verb /dɒdʒ/

dodge

Meaning
to move quickly to one side to avoid something; to avoid dealing with something cleverly or dishonestly
Example
The boxer managed to dodge his opponent's punch.
A2 noun /rɪˈfrɪdʒ.ər.eɪ.tər/

Refrigerator

Meaning
an appliance for keeping food and drinks cold
Example
Please put the milk in the refrigerator to keep it fresh.
C2 noun /oʊliˈændər/

Oleander

Meaning
a poisonous evergreen shrub with clusters of white, pink, or red flowers
Example
The beautiful oleander flowers bloomed in the garden despite their toxic nature.
A2 noun /ˈdʒækɪt/

Jacket

Meaning
a piece of clothing worn on the upper body, typically having sleeves and fastening down the front
Example
He wore a leather jacket to protect himself from the cold wind.
C2 noun /ˌnɒn ˈsɛkwɪtər/

non sequitur

Meaning
a statement or conclusion that does not logically follow from the previous statement
Example
His comment about the weather was a complete non sequitur during the budget discussion.
B2 adjective/noun /staʊt/

stout

Meaning
Strong, thick, or heavily built; also a kind of dark beer
Example
The stout man lifted the heavy box with ease.
B1 noun /weɪv/

Wave

Meaning
a moving ridge on the surface of water; a gesture of greeting or farewell
Example
The surfer rode the big wave all the way to the shore.
C1 adjective /dɪsˈɪntrəstɪd/

disinterested

Meaning
not influenced by personal interest; impartial or neutral
Example
The judge remained disinterested in the case.
C1 noun prəˈfaʊnd ɪˈnɪʃətɪv

profound initiative

Meaning
A deep, meaningful, and significant action or program designed to create change.
Example
A profound initiative can create sustainable changes.
B2 adjective /ˈmɪd.əl.eɪdʒd/

Middle-aged

Meaning
being of an age between young and old; typically between 40-60 years old
Example
The middle-aged man started a new career.
C1 noun /ˈniːdəlwɜːrk/

needlework

Meaning
The craft of sewing, embroidery, or knitting done with a needle.
Example
Her grandmother taught her the art of needlework.
C2 noun /sfɛˈrɪsɪti/

sphericity

Meaning
The quality or state of being spherical; roundness.
Example
The sphericity of the ball made it roll smoothly on the ground.
C1 noun /ˈplez.ən.tri/

Pleasantry

Meaning
a remark made in order to be polite or friendly; light conversation or jokes
Example
They exchanged pleasantries before the meeting began.
C2 noun /kəˌmɒd.ɪ.fɪˈkeɪ.ʃən/

commodification

Meaning
The transformation of goods, services, ideas, or social relations into market commodities.
Example
The commodification of education has increased tuition costs.
C1 adjective /ɪˈmeʒərəbəl/

Immeasurable

Meaning
too large or extensive to measure; boundless
Example
The immeasurable love of a mother knows no bounds.
C1 noun /dɪˈstɔːrʃən/

distortion

Meaning
the action of twisting, changing, or misrepresenting the shape, sound, or truth of something
Example
There was a distortion in the radio signal.
C2 noun /ˈneɪdɪər/

nadir

Meaning
The lowest point of a situation or condition.
Example
The company reached its nadir during the financial crisis.
B1 noun ˈɒk.sɪ.dʒən

oxygen

Meaning
A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
Example
Oxygen is vital for life.
C1 adjective ˈsɛd(ə)ntəri

sedentary

Meaning
Characterized by much sitting and little physical activity.
Example
A sedentary lifestyle can lead to numerous health problems.
B2 adjective /ˈlɪb.ər.əl/

Liberal

Meaning
open-minded; tolerant; generous; progressive in thinking
Example
She has a liberal attitude towards different cultures and beliefs.