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.
C1 noun /ˌpɜːrspəˈreɪʃn/

perspiration

Meaning
The process of sweating.
Example
Heavy exercise causes perspiration.
C1 adjective ˈkʌm.bə.səm

cumbersome

Meaning
Heavy, unwieldy, difficult to handle or carry.
Example
The cumbersome luggage slowed him down.
C1 noun /trænsˈɡrɛʃən/

transgression

Meaning
an act that goes against a law, rule, or code of conduct; a violation or sin
Example
The court forgave his first transgression but warned him not to repeat it.
C1 adjective /ˌɪnkəmˈpætəbl/

incompatible

Meaning
Not able to exist or work together without conflict.
Example
Their personalities were completely incompatible.
C1 noun əˈtrɪʃ.ən

attrition

Meaning
The process of reducing something's strength or effectiveness through sustained attack or pressure.
Example
The company faced high employee attrition due to job dissatisfaction.
C1 noun

Peck

C1 noun /lɔnˈdʒɛvəti/

longevity

Meaning
Long life or long existence of something.
Example
Good habits contribute to health and longevity.
C1 adjective /ˈneɡ.lɪ.dʒə.bəl/

Negligible

Meaning
so small or unimportant as to be not worth considering; insignificant
Example
The side effects of this medicine are negligible.
C1 noun /ˈspɛktər/

specter

Meaning
A ghost or spirit; something that causes fear or dread.
Example
The specter of war still haunts the region.
C1 noun /bɪz/

Biz

Meaning
business (informal); commercial enterprise or activity
Example
He's been in the restaurant biz for twenty years.
C1 verb /druːp/

droop

Meaning
to bend or hang downward; to become weak or tired
Example
The flowers began to droop in the heat.
C1 noun /ˌdez.ɪɡˈneɪ.ʃən/

Designation

Meaning
the action of choosing someone for a position; a name, title, or official status
Example
His designation as team leader came with additional responsibilities and authority.
C1 noun /ˌsʌpəˈzɪʃən/

supposition

Meaning
An assumption or belief that something is true without certain proof.
Example
His plan was based on the supposition that the market would recover quickly.
C1 verb /ˈpeɪtrənaɪz/

patronize

Meaning
to treat someone in a condescending way; to be a regular customer of a business
Example
Don't patronize me with your fake sympathy.
C1 adjective /ˌʌnrɪˈfaɪnd/

unrefined

Meaning
not processed or purified; lacking polish or sophistication
Example
The unrefined oil must be processed before it can be used as fuel.
C1 noun /ˈpʊlpɪt/

pulpit

Meaning
a raised platform in a church from which the preacher delivers a sermon
Example
The pastor stood at the pulpit to address the congregation.
C1 verb /ˈpæmpər/

pamper

Meaning
to treat with excessive care and attention; to spoil
Example
Parents often pamper their first child.
C1 verb /ˈsɛvər/

sever

Meaning
to cut off or separate, especially by cutting; to end a connection or relationship
Example
He had to sever ties with the company after the dispute.
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 ˌdɪs.æmˌbɪɡ.juˈeɪ.ʃən

disambiguation

Meaning
The removal of ambiguity by making something clear and unambiguous.
Example
The AI system applies disambiguation to refine text understanding.
C1 adjective /ɪˈstiːmd/

Esteemed

Meaning
respected and admired; held in high regard
Example
He is an esteemed professor at the university.
C1 noun /ˈænərki/

anarchy

Meaning
a state of disorder due to the absence or failure of government or authority
Example
The collapse of the regime led to anarchy in the streets.
C1 noun /pɒmp/

pomp

Meaning
ceremonial display or splendor; grandeur
Example
The graduation ceremony was full of pomp and circumstance.
C1 noun /ˌrɛpəˈreɪʃən/

reparation

Meaning
the making of amends for a wrong done by paying money or helping those who were wronged
Example
The government offered reparations to the victims of the conflict.
C1 adjective /ʌnˈtaɪərɪŋ/

Untiring

Meaning
continuing without stopping; persistent; tireless
Example
Her untiring efforts finally led to success.
C1 verb /səbˈstænʃieɪt/

substantiate

Meaning
To provide evidence to support or prove the truth of something.
Example
The lawyer worked to substantiate the claims with solid evidence.
C1 noun /helm/

Helm

Meaning
a tiller or wheel for steering a ship or boat; a position of leadership or control
Example
The experienced captain took the helm and expertly navigated the ship through the storm.
C1 noun /ˈnjuːɑːns/

nuance

Meaning
A subtle difference in shade of meaning, appearance, or sound.
Example
He noticed the subtle nuance in her expression.
C1 verb /məˈnuː.vər/

manoeuver

Meaning
To move skillfully or carefully; to guide or manipulate into a desired position.
Example
The driver skillfully manoeuvered the car through the narrow street.
C1 adjective /ˈskeɪðɪŋ/

scathing

Meaning
severely critical; harshly scornful
Example
The critic wrote a scathing review of the movie.
C1 noun /ˈænti ˈeəkræft ɡʌn/

Anti-aircraft-gun

Meaning
a weapon designed to attack aircraft from the ground
Example
The anti-aircraft gun was positioned to defend the military base.
C1 noun /ˈdɛsɪˌbɛl/

decibel

Meaning
a unit used to measure the intensity of sound
Example
The noise level in the factory exceeded 90 decibels.
C1 verb /plɒd/

plod

Meaning
to work slowly and steadily, often with effort or difficulty
Example
He plodded through his homework despite feeling tired.
C1 noun /ˌɪmɔːrˈtæləti/

immortality

Meaning
the state of living forever; eternal life or lasting fame beyond death
Example
Many ancient cultures believed that heroes could achieve immortality through great deeds.
C1 noun /ˈkælɪbər/

caliber

Meaning
The quality of someone's ability or character; the internal diameter of a gun barrel.
Example
The university attracts students of high caliber.
C1 verb /ˈbɪkər/

bicker

Meaning
To argue or quarrel about trivial matters.
Example
The children began to bicker over the last piece of cake.
C1 verb /doʊt/

dote

Meaning
to show excessive love or fondness for someone or something
Example
She tends to dote on her grandchildren.
C1 verb /sɪˈkluːd/

seclude

Meaning
To keep someone away from other people; to isolate.
Example
The monk chose to seclude himself in the mountains.
C1 noun ˌæf.ɔːr.ɪˈsteɪ.ʃən

afforestation

Meaning
The action of planting trees on an area of land in order to form a forest.
Example
Afforestation helps restore biodiversity.
C1 verb /ˌriː.ɪˈstæblɪʃ/

reestablish

Meaning
to set up or restore something again after it has been disrupted
Example
The government worked hard to reestablish peace in the region.
C1 noun /mæɡˈnɪfɪsəns/

magnificence

Meaning
splendor, grandeur, or impressive beauty
Example
The magnificence of the palace left everyone speechless.
C1 noun /kəˈres/

Caress

Meaning
a gentle or loving touch
Example
The mother's gentle caress calmed the crying baby.
C1 verb /ˈfæbrɪkeɪt/

fabricate

Meaning
to invent or concoct something, often with the intent to deceive; or to construct or manufacture
Example
The witness fabricated his testimony to protect himself.
C1 noun /ˌdɪspəˈzɪʃən/

disposition

Meaning
A person's usual attitude or temperament; arrangement or tendency.
Example
She has a cheerful disposition despite the difficulties.
C1 adjective /ˈwɪntri/

wintry

Meaning
Characteristic of or suitable for winter; cold and bleak.
Example
The wintry wind made everyone shiver as they walked outside.
C1 verb /əˈpiːz/

appease

Meaning
to calm or pacify someone by meeting their demands
Example
The manager tried to appease the angry customer.
C1 noun /ˈwɔː.tər ˈtʃes.nʌt/

Water Chestnut

Meaning
aquatic plant with edible white crisp tubers
Example
Water chestnuts add a nice crunch to stir-fry dishes.
C1 verb /ˈæmpjʊteɪt/

amputate

Meaning
to cut off a limb from the body by surgery
Example
The doctors had to amputate his leg after the accident.
C1 noun /ˈhaɪ.nəs/

Highness

Meaning
a title given to a person of royal rank; the quality or state of being high or elevated
Example
Your Highness, the royal carriage is ready to take you to the state banquet this evening.
C1 noun ˌdiːˌrɛɡ.jʊˈleɪ.ʃən

deregulation

Meaning
The removal or reduction of government regulations in an economic sector.
Example
Deregulation has increased competition in the telecommunications sector.
C1 noun məˈnɒp.əl.i

monopoly

Meaning
The exclusive possession or control of the supply of or trade in a commodity or service.
Example
The company has a monopoly on electric car production.
C1 noun /ˈɪnkjʊˌbeɪtər/

incubator

Meaning
a device or environment that provides suitable conditions for eggs, cells, or infants to develop
Example
The premature baby was placed in an incubator for care.
C1 verb, adjective, noun /spruːs/

spruce

Meaning
to make neat or tidy in appearance; also refers to an evergreen tree
Example
He spruced up his room before the guests arrived.
C1 noun /ˌres.ɪˈteɪ.ʃən/

Recitation

Meaning
the action of reciting or repeating aloud from memory
Example
The poetry recitation contest was held in the auditorium.
C1 exclamation /juˈriːkə/

eureka

Meaning
An exclamation used to express a sudden discovery or realization.
Example
When the solution finally came to him, he shouted, 'Eureka!'
C1 adverb /ˈkɔːrdiəli/

Cordially

Meaning
in a warm and friendly manner; sincerely
Example
You are cordially invited to our wedding ceremony.
C1 noun /ɒpˈtɒmɪtrɪst/

optometrist

Meaning
A healthcare professional who examines eyes and prescribes corrective lenses.
Example
The optometrist prescribed new glasses for her.
C1 adjective /ˈzɛsti/

zesty

Meaning
Having a strong, pleasant, and somewhat spicy flavor; full of energy and enthusiasm.
Example
The dish had a zesty flavor that everyone loved.
C1 adverb /maɪˈnjuːtli/

Minutely

Meaning
in very small detail; extremely carefully
Example
The detective examined the evidence minutely.
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 /dɪˈspɛns/

dispense

Meaning
To distribute or provide something, especially in portions.
Example
The machine dispenses clean drinking water.
C1 noun /ˈɪŋklɪŋ/

inkling

Meaning
A slight idea, hint, or suspicion about something.
Example
She had an inkling that he was planning a surprise.
C1 noun /ˈef.ɪ.dʒi/

Effigy

Meaning
a sculpture or model of a person, especially one made as a protest
Example
The protesters burned an effigy of the corrupt politician in the square.
C1 noun /ˈæbət/

abbot

Meaning
The head of a monastery for monks.
Example
The abbot welcomed the visitors to the monastery.
C1 adjective /praɪˈmiːvəl/

primeval

Meaning
Relating to the earliest ages in history; ancient and primitive.
Example
The explorers ventured into the primeval forest untouched by humans.
C1 adjective পারসিভেবল

perceivable

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

Lineage

Meaning
Direct descent from an ancestor; ancestry or pedigree.
Example
Tracing your lineage can reveal unknown ancestors.
C1 verb /priːˈɒkjʊpaɪ/

preoccupy

Meaning
To dominate or engross the mind of someone to the exclusion of other thoughts.
Example
Worries about the future preoccupy him constantly.
C1 noun dɪˈtætʃ.mənt

detachment

Meaning
The state of being objective or aloof; not being emotionally involved.
Example
Buddhist philosophy encourages detachment from material desires.
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
C1 verb /dɪˈpoʊz/

depose

Meaning
to remove someone from office or power, especially suddenly and forcefully
Example
The rebels managed to depose the dictator after years of unrest.
C1 noun /ˌvəʊ.kəl.aɪˈzeɪ.ʃən/

vocalization

Meaning
The action of producing sounds with the voice; the expression of thoughts or feelings in spoken words.
Example
The vocalization of the singer captivated the audience.
C1 adjective /ɪmˈpɑːrʃəl/

Impartial

Meaning
treating all sides fairly; unbiased; neutral
Example
A good judge must remain impartial throughout the trial.
C1 verb /ɪnˈkrəʊtʃ/

encroach

Meaning
to gradually take over or intrude on someone’s rights, territory, or space
Example
The buildings began to encroach on the protected forest land.
C1 noun /ˈrɛl.ɪk/

relic

Meaning
an object surviving from an earlier time, often of historical or religious interest
Example
The museum displayed relics from the ancient civilization.
C1 noun /ˈfænsiər/

fancier

Meaning
a person who has a special interest in a particular thing or activity, especially animals or hobbies
Example
He is a fancier of rare birds.
C1 adjective /ʌnˈsəʊʃəl/

unsocial

Meaning
not enjoying the company of others; avoiding social interaction; contrary to social norms
Example
He prefers unsocial hours so he can work alone without interruptions.
C1 noun /ˈstrɑːtəm/

stratum

Meaning
a layer or level of material, or a social class in society
Example
The upper stratum of society enjoyed privileges not available to others.
C1 noun /ˈrɛtrəsˌpɛkt/

retrospect

Meaning
the act of looking back on or reviewing past events
Example
In retrospect, the decision seemed unwise.
C1 noun /ˈhɜːrbɪsaɪd/

herbicide

Meaning
A chemical substance used to kill unwanted plants, especially weeds.
Example
Farmers used herbicide to protect their crops from invasive weeds.
C1 noun /ˌʌl.tɪˈmeɪ.təm/

Ultimatum

Meaning
a final demand or statement of terms, the rejection of which will result in retaliation
Example
The boss gave him an ultimatum: improve or be fired.
C1 noun flɛər

flair

Meaning
A natural ability to do something well.
Example
She has a flair for design, always creating visually stunning work.
C1 adjective /ˈniːd.ləs/

Needless

Meaning
unnecessary; not required; without purpose
Example
The argument was needless and could have been avoided.
C1 adjective /ˈfleɪɡrənt/

flagrant

Meaning
shockingly noticeable or evident; glaringly wrong
Example
It was a flagrant violation of the rules.
C1 adjective ˌsɪn.əˈdʒɪs.tɪk

synergistic

Meaning
Relating to the interaction of elements that when combined produce a greater effect than the sum of their individual effects.
Example
A synergistic effect occurs when nutrients work together.
C1 noun /ˈwɪtʃ.krɑːft/

witchcraft

Meaning
the practice of magical skills, spells, and abilities
Example
In old times, many people believed in witchcraft.
C1 noun /ˈskeɪp.ɡəʊt/

Scapegoat

Meaning
a person who is blamed for the wrongdoings, mistakes, or faults of others
Example
He became the scapegoat for the team's poor performance.
C1 adjective /ɪˈneɪn/

inane

Meaning
lacking sense, meaning, or significance; silly or pointless
Example
The movie was criticized for its inane dialogue.
C1 adjective lɪŋˈɡwɪs.tɪk

linguistic

Meaning
Related to language or linguistics; concerning the scientific study of language.
Example
The AI model learns from linguistic patterns.
C1 verb /siːð/

seethe

Meaning
To be filled with intense but unexpressed anger or agitation.
Example
She was seething with anger after the unfair decision.
C1 noun /ˈfɔːrdʒəri/

forgery

Meaning
the crime of making fake documents, money, or artworks
Example
The bank detected a forgery in the signature on the cheque.
C1 noun /ˌkɒn.stəˈleɪ.ʃən/

constellation

Meaning
a group of stars forming a recognizable pattern in the night sky
Example
Orion is one of the most famous constellations.
C1 adverb /ˌɪn.ədˈvɜːr.tənt.li/

Inadvertently

Meaning
without being aware of what you are doing; unintentionally; by mistake
Example
She inadvertently deleted the important file while cleaning her computer.
C1 noun /ˈæspɪrənt/

aspirant

Meaning
a person who seeks or hopes to achieve a position of honor or advancement
Example
She is an aspirant for the university's top scholarship.
C1 noun /əˈliː.dʒəns/

allegiance

Meaning
Loyalty or commitment of a subordinate to a superior or of an individual to a group or cause.
Example
Soldiers take an oath of allegiance to their country.
C1 noun/verb /ˈsuː.tʃər/

suture

Meaning
A stitch or row of stitches holding together the edges of a wound or surgical incision.
Example
The doctor used a suture to close the wound.
C1 noun /ˈprɒvɪdəns/

providence

Meaning
the protective care of God or nature as a spiritual power; foresight or prudence
Example
They believed their survival was due to divine providence.
C1 adjective /ˈskrɔːni/

scrawny

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

bereavement

Meaning
The state of having lost a loved one through death.
Example
She received many letters of sympathy during her time of bereavement.
C1 noun /ˌɪntərˈmɪʃən/

intermission

Meaning
A pause or break, especially during a performance or event.
Example
The play had a twenty-minute intermission.
C1 adjective /tɛkˈtɑː.nɪk/

tectonic

Meaning
Relating to the structure of the earth's crust and the large-scale processes that take place within it.
Example
Tectonic movements cause earthquakes and mountain formation.
C1 noun /ˈliːʒən/

lesion

Meaning
An area of damage or abnormal change in the tissue of an organism, often caused by injury or disease.
Example
The doctor examined the skin lesion carefully.
C1 noun /ˈkrɒkəri/

crockery

Meaning
Dishes, plates, cups, and other items made of earthenware or china.
Example
The hotel provided clean crockery for the guests.
C1 noun /ˈɡæmbɪt/

gambit

Meaning
a calculated move or remark intended to gain an advantage, especially in chess or conversation
Example
His opening gambit in the debate caught everyone by surprise.
C1 adverb /ˈvaɪtəli/

vitally

Meaning
in an extremely important or essential way; in a manner relating to life or vitality
Example
Access to clean water is vitally important for public health.
C1 verb /ˈwɒloʊ/

wallow

Meaning
to roll about or indulge oneself in something excessively
Example
The buffalo likes to wallow in the mud on hot days.
C1 adjective /ˌɪnɪkˈsplɪkəbl/

inexplicable

Meaning
Impossible to explain or understand.
Example
The sudden disappearance of the file was inexplicable.
C1 verb /ˈræn.sæk/

ransack

Meaning
to search a place roughly and steal or damage things
Example
Burglars ransacked the house while the family was away.
C1 verb /praʊl/

prowl

Meaning
To move around quietly and secretly, especially while hunting or searching.
Example
The cat prowled around the garden at night.
C1 noun fɔːlt ˈtɒl.ər.əns

fault-tolerance

Meaning
The ability of a system to continue operating properly in the event of the failure of some of its components.
Example
Fault-tolerance ensures dependable systems.
C1 verb /riːk/

wreak

Meaning
to cause or inflict something, especially damage or harm
Example
The storm wreaked havoc on the coastal villages.
C1 noun /ˈpædʒənt/

pageant

Meaning
A public entertainment consisting of a procession of people in elaborate costumes, or a beauty contest.
Example
She won first place in the beauty pageant.
C1 noun /məˈræŋ/

meringue

Meaning
A light dessert topping made from whipped egg whites and sugar.
Example
She decorated the pie with a fluffy meringue topping.
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 adjective /əˈdɛpt/

adept

Meaning
Very skilled or proficient at something.
Example
She is adept at solving complex mathematical problems.
C1 noun /ˈɔːrθədɑːksi/

orthodoxy

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

Revengeful

Meaning
seeking or desiring revenge; vindictive
Example
He became revengeful after being betrayed by his friend.
C1 adjective /ˈpærəmaʊnt/

paramount

Meaning
more important than anything else; supreme
Example
Safety is of paramount importance in this factory.
C1 noun /ˈmɒŋ.ɡuːs/

Mongoose

Meaning
a small carnivorous mammal known for its ability to kill venomous snakes
Example
The mongoose quickly attacked the cobra to protect its young.
C1 noun /kənˈtɛndər/

contender

Meaning
a person or team competing for a title or prize
Example
She is a strong contender for the mayoral position.