buoyancy
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C1 noun /ˈbɔɪənsi/ or /ˈbuːjənsi/

buoyancy

Meaning
The ability to float in a liquid; cheerfulness and optimism.
Example
Her natural buoyancy lifted the mood of the group.
C1 noun /bɒɡ/

bog

Meaning
an area of wet, spongy ground; a swamp or marsh
Example
The hikers got stuck in a bog.
C1 noun /bɑːm/

balm

Meaning
A soothing ointment or something that provides comfort or relief.
Example
The balm helped relieve the pain from her sunburn.
C1 noun /ˈbuːt.stræp.ɪŋ/

bootstrapping

Meaning
Starting a business with personal resources or small investments without external funding or venture capital.
Example
Many entrepreneurs rely on bootstrapping to launch their businesses.
C1 noun/adjective/verb /bʌf/

buff

Meaning
A fan or enthusiast; also to polish or shine something.
Example
He is a movie buff who watches films every weekend.
C1 adjective /bəˈroʊk/

baroque

Meaning
relating to a highly ornate and extravagant style of art, architecture, or music from the 17th and early 18th centuries; excessively elaborate or complex
Example
The church was decorated in a baroque style with intricate details.
C1 noun /ˈbrɛvɪti/

brevity

Meaning
Concise and exact use of words in writing or speech.
Example
The brevity of the speech kept the audience engaged.
C1 noun /ˈbɛərnəs/

bareness

Meaning
the state of being bare or uncovered; lack of decoration, warmth, or concealment
Example
The bareness of the room made it feel cold and unwelcoming.
C1 adjective ˈbɜːdʒənɪŋ

burgeoning

Meaning
Beginning to grow or increase rapidly; flourishing.
Example
The burgeoning tech industry has attracted many investors.
C1 noun /ˈboʊ.ə/

Boa

Meaning
a large non-venomous snake that kills prey by constriction
Example
The boa constrictor wrapped around its prey.
C1 noun /blæk plʌm/

Black plum

Meaning
a dark purple or black colored edible fruit with sweet and sour taste
Example
I picked some fresh black plums from the tree in our backyard.
C1 noun, verb /buːz/

booze

Meaning
alcoholic drink, especially strong liquor; to drink alcohol, often excessively
Example
They bought some booze for the party.
C1 noun /braɪn/

brine

Meaning
Water saturated with salt, often used for preserving food.
Example
The olives were stored in brine to keep them fresh.
C1 verb /bæsk/

bask

Meaning
to lie in warmth and light; to enjoy something pleasurable
Example
The cat basks in the sunny window.
C1 adjective /ˈbrɪslɪŋ/

bristling

Meaning
full of energy, anger, or excitement; showing bristles standing up
Example
He entered the room bristling with confidence.
C1 noun /blaɪt/

blight

Meaning
A disease or condition that causes plants to wither; something that spoils or damages.
Example
The drought was a blight on the farmer’s crops.
C1 verb /bɪˈɡɛt/

beget

Meaning
to bring about or give rise to; to father or produce
Example
Violence begets more violence.
C1 noun /ˈbærɪstər/

barrister

Meaning
A type of lawyer in certain legal systems who specializes in courtroom advocacy and litigation.
Example
The barrister argued the case passionately before the judge.
C1 noun /ˈbʊl.ək/

Bullock

Meaning
a young bull; a castrated bull used for farm work
Example
The farmer used a bullock to plow the field.
C1 noun /blɪs/

Bliss

Meaning
perfect happiness; great joy
Example
She felt pure bliss while watching the beautiful sunset.
C1 noun /baʊt/

Bout

Meaning
a short period of intense activity of a specified kind; a wrestling or boxing match
Example
After a bout of illness, she finally recovered and returned to work.
C1 adjective /ˈbaɪtɪŋ/

Biting

Meaning
extremely cold; sharply critical or harsh
Example
The biting cold made everyone shiver.
C1 noun /ˈbaɪ.lɔː/

by-law

Meaning
A rule made by a company, organization, or local authority to control the actions of its members.
Example
The city council passed a new by-law regulating street vendors.
C1 noun/adjective /ˈbæstərd/

bastard

Meaning
a child born to unmarried parents (offensive); also used informally as an insult or to describe something unpleasant
Example
He called him a bastard in anger.
C1 noun /bʌm/

bum

Meaning
informal term for the buttocks; also a homeless or lazy person
Example
He sat on his bum all day doing nothing.
C1 adjective /bɪˈriːvd/

Bereaved

Meaning
having lost a loved one through death
Example
The bereaved family received many condolences.
C1 noun /bʊk ˈbaɪn.dər/

Book binder

Meaning
a person whose job is to fasten the pages of books together and put covers on them
Example
The old book binder carefully restored the antique manuscript.
C1 adjective /ˈbuːzi/

boozy

Meaning
containing or involving a lot of alcohol; slightly drunk from alcohol
Example
The party became boozy as the night went on.
C1 verb /ˈbruːtəlaɪz/

brutalize

Meaning
to treat someone with extreme violence or cruelty; to make something harsh or cruel
Example
The regime was accused of brutalizing innocent civilians.
C1 noun /bɑːrˈbeəriən/

Barbarian

Meaning
a person from an uncivilized group; someone who is cruel or brutal
Example
The ancient Romans considered anyone outside their empire to be barbarians.
C1 adjective /ˈbæʃ.fəl/

Bashful

Meaning
shy; timid; modest; easily embarrassed
Example
The bashful child hid behind her mother when meeting strangers.
C1 noun /ˈbroʊkərɪdʒ/

brokerage

Meaning
A firm that acts as an intermediary between buyers and sellers, often charging a fee.
Example
The real estate brokerage helped them find a new home.
C1 noun /ˈbɛd.rɒk/

bedrock

Meaning
the solid rock layer beneath the soil; the fundamental basis of something
Example
Trust is the bedrock of a healthy relationship.
C1 adjective /ˈbʊkɪʃ/

Bookish

Meaning
studious; scholarly; devoted to reading and studying
Example
She was known for her bookish nature and love of literature.
C1 verb /ˈbɛkən/

beckon

Meaning
to signal or call someone to come closer, often with a gesture; to attract or invite
Example
She beckoned him to come closer with a wave of her hand.
C1 adjective, noun /ˈbʊrʒ.wɑː/

bourgeois

Meaning
Relating to the middle class, often with materialistic values or conventional attitudes.
Example
The novel criticizes the bourgeois lifestyle of the city dwellers.
C1 noun /bəˈnɛv.ə.ləns/

benevolence

Meaning
The quality of being well meaning and kindly; the disposition to do good.
Example
His benevolence towards the poor earned him respect.
C1 noun /bɒmˈbɑːrdmənt/

bombardment

Meaning
a continuous attack with bombs or other projectiles
Example
The city endured a heavy bombardment during the war.
C1 adjective /ˈbɛndi/

bendy

Meaning
Easily curved or flexible.
Example
The bendy straw made it easier to drink from the cup.
C1 noun /brɔːl/

brawl

Meaning
a noisy fight in a public place
Example
A brawl broke out outside the bar late at night.
C1 noun /bəˈrɒmɪtər/

barometer

Meaning
an instrument that measures atmospheric pressure
Example
The barometer indicated a storm was approaching.
C1 noun /blɒˈkeɪd/

Blockade

Meaning
an act or means of sealing off a place to prevent goods or people from entering or leaving
Example
The naval blockade prevented supplies from reaching the port.
C1 noun /ˈbeɪsbɔːrd/

baseboard

Meaning
A narrow board running along the bottom of an interior wall, covering the joint between wall and floor.
Example
The carpenter painted the baseboard white.
C1 verb /ˈblækən/

blacken

Meaning
to make something black or darker; to stain, soil, or tarnish
Example
Smoke from the fire began to blacken the walls.
C1 adjective /ˈbækˌhændɪd/

backhanded

Meaning
Indirect or sarcastic, often appearing as praise but actually insulting.
Example
She gave him a backhanded compliment about his work.
C1 noun /bɪz/

Biz

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

brandish

Meaning
to wave or flourish something, especially a weapon, in a threatening or showy way
Example
He brandished a sword to scare off the intruders.
C1 verb; noun /beltʃ/

belch

Meaning
to expel air noisily from the stomach through the mouth; to emit or pour out suddenly and forcefully
Example
After drinking the soda, he belched loudly.
C1 noun /ˈbɪɡ.ət/

bigot

Meaning
A person who is intolerant toward those holding different opinions or beliefs.
Example
He was called a bigot for refusing to listen to others' views.
C1 verb, noun /ˈbrɪsəl/

bristle

Meaning
to react angrily or defensively; a short stiff hair or fiber
Example
The cat bristled when it saw the dog.
C1 adjective bəˈnev.əl.ənt

benevolent

Meaning
Kind, generous, showing goodwill and kindness.
Example
His benevolent nature made him beloved.
C1 noun /ˈbreɪkər/

breaker

Meaning
A person or thing that breaks something; a large sea wave that breaks into foam near the shore; a device that interrupts an electric circuit.
Example
The breaker tripped during the storm, cutting off electricity.
C1 noun /ˈblæs.fə.mi/

blasphemy

Meaning
the act of speaking disrespectfully about God or sacred things
Example
In some countries, blasphemy is a punishable offense.
C1 phrase ˌbaɪ.oʊ.daɪˈvɜː.sɪ.ti ˌprez.əˈveɪ.ʃən

biodiversity preservation

Meaning
The protection and conservation of the variety of life in all its forms, including different species, genetic diversity, and ecosystems.
Example
Biodiversity preservation is critical for ecological balance.
C1 noun /beɪn/

bane

Meaning
A cause of great distress, harm, or annoyance.
Example
Traffic jams are the bane of city life.
C1 verb /bɪˈmoʊn/

bemoan

Meaning
To express discontent or sorrow over something.
Example
Critics bemoaned the lack of diversity in the film.
C1 noun /ˈbaɪoʊˌsfɪr/

Biosphere

Meaning
the regions of the surface and atmosphere of the earth occupied by living organisms
Example
Climate change is affecting the entire biosphere.
C1 adjective /ˈbær.ən/

Barren

Meaning
sterile; unable to produce; desolate; unproductive
Example
The barren desert stretched for miles without any vegetation.
C1 verb /bɪˈhoʊld/

behold

Meaning
to see or observe something, especially something remarkable or impressive
Example
She stood quietly to behold the sunrise over the hills.
C1 verb /bɪˈlɪtl/

belittle

Meaning
To make someone or something seem less important or less valuable.
Example
He often belittled his coworkers to feel superior.
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 /baɪl/

Bile

Meaning
a bitter greenish-brown alkaline fluid that aids digestion and is secreted by the liver and stored in the gallbladder
Example
The liver produces bile to help digest fats.
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 adjective /bɪˈrɛft/

bereft

Meaning
Deprived of or lacking something, especially a nonmaterial asset.
Example
After the betrayal, he felt bereft of hope and trust.
C1 adjective /ˈbeɪs.ləs/

Baseless

Meaning
without foundation; groundless; unfounded
Example
The accusations against him were completely baseless.
C1 noun /ˈbraɪ.dəl/

Bridle

Meaning
the headgear used to control a horse, consisting of buckled straps and a bit
Example
The rider adjusted the horse's bridle before mounting for the race.
C1 noun /bəˈtæljən/

battalion

Meaning
A large body of soldiers ready for battle, typically consisting of several companies.
Example
The battalion was deployed to the front line.
C1 noun /beɪl/

bale

Meaning
A large bundle of goods tightly wrapped and bound.
Example
The workers loaded the bale of cotton onto the truck.
C1 verb /bɪˈstoʊ/

bestow

Meaning
To give or present something as a gift or honor.
Example
The king bestowed honors upon the brave soldiers.
C1 verb /ˈbʌŋɡəl/

bungle

Meaning
To carry out a task clumsily or incompetently.
Example
He bungled the presentation and confused the audience.
C1 verb /blɜːrt/

blurt

Meaning
to say something suddenly without thinking
Example
He blurts out the secret accidentally.
C1 adjective /ˈbɔɪənt/ or /ˈbuːjənt/

buoyant

Meaning
Able to float easily; cheerful and optimistic.
Example
She remained buoyant despite the difficulties.
C1 noun /ˈbæs.ti.ən/

bastion

Meaning
a stronghold or fortification; a place or institution strongly defending particular principles
Example
The castle stood as a bastion against enemy attacks.
C1 noun /ˈblʌdˌbæθ/

bloodbath

Meaning
an event in which a lot of people are killed or injured, especially in a violent conflict
Example
The war turned into a bloody bloodbath.
C1 noun /ˈbeɪlɪf/

bailiff

Meaning
An official who keeps order in a court, carries out court orders, or collects debts.
Example
The bailiff asked everyone to rise as the judge entered the courtroom.
C1 verb /ˈbɑːrtər/

barter

Meaning
To exchange goods or services without using money.
Example
They bartered their crops for handmade tools.
C1 verb /ˈbəʊl.stər/

bolster

Meaning
To support or strengthen; to prop up.
Example
The new policy aims to bolster economic growth.
C1 noun /buːn/

boon

Meaning
A thing that is helpful or beneficial.
Example
The internet is a boon to modern education.
C1 adjective /bræʃ/

brash

Meaning
self-assertive in a rude, noisy, or overconfident way
Example
His brash comments offended many people at the meeting.
C1 adjective ˌbjʊə.rəˈkræt.ɪk

bureaucratic

Meaning
Involving or characterized by complex rules and procedures that can delay the achievement of goals.
Example
Bureaucratic red tape often delays project approvals.
C1 adjective /ˈbleɪtənt/

blatant

Meaning
done openly and unashamedly; obvious and offensive
Example
The company's blatant disregard for safety regulations angered the public.
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 noun /bəˈrɑːʒ/

barrage

Meaning
a concentrated outpouring of questions, criticisms, or blows; a rapid, continuous attack
Example
The politician faced a barrage of tough questions from reporters.
C1 adjective /ˈbreɪzən/

brazen

Meaning
Bold and without shame; shameless.
Example
She made a brazen attempt to lie in front of everyone.
C1 adjective/verb /ˈbæntərɪŋ/

bantering

Meaning
characterized by good-humored teasing or joking
Example
They had a bantering conversation at the café.
C1 noun /ˈblɛm.ɪʃ/

blemish

Meaning
A small mark or flaw that spoils the appearance of something.
Example
The mirror had a small blemish on the surface.
C1 adjective /ˈbɔɪstərəs/

boisterous

Meaning
noisy, energetic, and cheerful; rowdy
Example
The children were boisterous during the birthday party.
C1 adjective /ˈbɒt.əl ɡriːn/

Bottle-green

Meaning
a dark green color similar to that of a green glass bottle
Example
She wore a beautiful bottle-green dress to the evening party.
C1 verb /bʌdʒ/

budge

Meaning
To move slightly; to change one’s opinion or position.
Example
Despite the pressure, he refused to budge from his decision.
C1 noun /brəˈzɪər/

Brassiere

Meaning
a woman's undergarment designed to support the breasts
Example
She bought a comfortable brassiere for daily wear.
C1 noun/verb /ˈbɔɪ/ or /ˈbuːi/

buoy

Meaning
A floating marker on water; to keep something afloat or encourage someone.
Example
The news buoyed their spirits after the loss.
C1 verb /bɒtʃ/

botch

Meaning
to carry out a task badly or carelessly
Example
He completely botched the repair job.
C1 noun /ˈbænɪstər/

banister

Meaning
a railing supported by posts at the side of a staircase or balcony
Example
She held the banister tightly while going down the stairs.
C1 noun /brʌnt/

brunt

Meaning
the worst part or main impact of something unpleasant
Example
The small town bore the brunt of the storm.
C1 noun /ˈbenɪˌfæktər/

Benefactor

Meaning
a person who gives money or other help to support a person or cause; a patron
Example
The anonymous benefactor donated millions to the hospital.
C1 adjective /ˌbaɪˈlæt.ər.əl/

bilateral

Meaning
An agreement or relationship between two parties that is mutual, two-sided, or reciprocal.
Example
The two countries signed a bilateral trade agreement.
C1 verb /bɪˈɡrʌdʒ/

begrudge

Meaning
to resent someone for having something; to give reluctantly
Example
She did not begrudge him his success.
C1 noun /ˈbjuːɡəl/

Bugle

Meaning
a brass musical instrument similar to a trumpet but without valves, used especially for military calls
Example
The soldier played the bugle to signal the start of the ceremony.
C1 adjective /ˈbrɪtl/

brittle

Meaning
easily broken or cracked; hard but liable to break
Example
The glass was so brittle that it cracked easily.
C1 verb /bɔːk/

balk

Meaning
to hesitate or refuse to proceed or comply
Example
She balked at signing the contract without reading it fully.
C1 noun /bɜːrθ/

Berth

Meaning
a sleeping place in a ship, train, or other vehicle; a place where a ship can dock
Example
I booked an upper berth on the overnight train.
C1 verb bɪˈkwiːð

bequeath

Meaning
Leave something to someone in a will; pass down or hand down to the next generation.
Example
The scientist bequeathed his research papers to the university.
C1 noun /ˈbɜːrθraɪt/

birthright

Meaning
A privilege or possession that a person has from birth.
Example
Freedom is considered a birthright of every individual.
C1 verb /bɪˈhɛd/

behead

Meaning
to cut off a person's or animal's head; to remove the leader or most important part
Example
The historical account describes how the traitor was beheaded as punishment.
C1 adjective /bɪˈleɪtɪd/

belated

Meaning
coming or happening later than expected or usual
Example
She sent me a belated birthday card.
C1 noun /blɜːrb/

blurb

Meaning
a short promotional description of a book, product, or service
Example
The back cover had a blurb praising the novel.
C1 noun /ˈbʌrə, ˈbʊrə/

borough

Meaning
A town, district, or administrative division, especially one with its own local government.
Example
Brooklyn is a borough of New York City.
C1 adjective /ˈblʌdləs/

bloodless

Meaning
without bloodshed; lacking violence or vitality
Example
The revolution was surprisingly bloodless.
C1 verb /brɔɪl/

broil

Meaning
To cook food by direct heat, usually under a grill or over a fire.
Example
She broiled the chicken until it was golden brown.
C1 noun /ˌbɪbliˈɒɡrəfi/

bibliography

Meaning
a list of books, articles, or other sources used or referred to in scholarly work
Example
The report includes a detailed bibliography at the end.
C1 noun /ˈbɪɡətri/

bigotry

Meaning
Intolerance toward those who hold different opinions or lifestyles.
Example
Her bigotry prevented her from accepting people with different beliefs.
C1 noun /ˈbærɪˌtoʊn/

baritone

Meaning
a male singing voice between tenor and bass
Example
The singer’s baritone voice impressed the audience.
C1 verb /bɔːl/

bawl

Meaning
to shout or cry loudly
Example
The baby bawled all night, keeping everyone awake.
C1 noun /ˈbaɪ.laɪn/

byline

Meaning
A line in a newspaper or magazine article that names the writer.
Example
Her byline appeared on the front page of the newspaper.
C1 adjective /ˈboʊɡəs/

bogus

Meaning
false, fake, or not genuine
Example
The police arrested him for using a bogus ID card.
C1 noun /brɪm/

Brim

Meaning
the projecting edge of a hat; the edge or lip of something
Example
The wide brim of his hat protected him from the scorching sun.
C1 adjective /bɪˈnaɪn/

benign

Meaning
Gentle, kind, or not harmful (especially of a disease or tumor).
Example
The doctor assured her that the tumor was benign.
C1 verb/noun ˈbuːt.stræp

bootstrap

Meaning
To start and develop a business using personal resources without external funding.
Example
He bootstrapped his company with minimal resources.
C1 verb /broʊtʃ/

broach

Meaning
to bring up a subject for discussion
Example
She decided to broach the topic of salary with her manager.
C1 noun /ˈbʊzəm/

bosom

Meaning
the human chest, especially a woman’s breast; also used metaphorically to refer to closeness or intimacy
Example
She kept the secret close to her bosom.
C1 noun /bəˈnæn.zə/

Bonanza

Meaning
a situation or event that creates a sudden increase in wealth, good fortune, or profits
Example
The oil discovery was a bonanza for the small country.