bioremediation
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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.
C2 noun /beɪz/

baize

Meaning
A type of coarse woolen cloth, often green, used for covering tables such as billiard tables.
Example
The old card table was covered with worn baize.
C2 adjective /ˈbuːtləs/

bootless

Meaning
Useless or futile; of no benefit.
Example
His bootless attempt to fix the machine only wasted time.
C2 verb /ˈblʌstər/

bluster

Meaning
to speak loudly in an aggressive or threatening way, often without real power
Example
The manager blustered about firing people but did nothing.
C2 noun /bəˈfuːn/

buffoon

Meaning
A ridiculous but amusing person; a clown or jester.
Example
He acted like a buffoon at the party, making everyone laugh.
C2 adjective /ˈbrætɪʃ/

brattish

Meaning
acting like a spoiled child; behaving in an annoying, self-centered way
Example
The brattish boy threw a tantrum when he didn’t get his toy.
C2 noun /ˈbrɪmˌstoʊn/

brimstone

Meaning
Sulfur, especially when considered as fiery and associated with hell or divine punishment.
Example
The preacher spoke of fire and brimstone to warn the congregation.
C2 adjective /ˈblæs.fə.məs/

blasphemous

Meaning
showing disrespect or lack of reverence for God or sacred things
Example
The book was banned for its blasphemous content.
C2 noun /bɪˈtroʊðəl/

betrothal

Meaning
The formal engagement to be married.
Example
Their betrothal was announced to the whole village.
C2 verb /ˈbændi/

bandy

Meaning
To pass (words, ideas, or gossip) back and forth in a casual or argumentative way.
Example
They bandied jokes across the table.
C2 verb /ˈbækˌslaɪd/

backslide

Meaning
To relapse into bad habits, undesirable practices, or moral decline.
Example
After months of progress, he began to backslide into old habits.
C2 noun /boʊ/

beau

Meaning
a male admirer or boyfriend; a fashionable young man
Example
She arrived at the party with her beau.
C2 noun /ˈbɪɡ.ə.mɪst/

bigamist

Meaning
A person who commits the crime of marrying someone while already married to another.
Example
The man was arrested for being a bigamist.
C2 adjective /bɪˈwɪtʃɪŋ/

bewitching

Meaning
charming, enchanting, or captivating in a magical or irresistible way
Example
She wore a bewitching smile that captivated everyone in the room.
C2 noun /bɜːrˈlɛsk/

burlesque

Meaning
A humorous and exaggerated imitation of a serious work; a type of theatrical entertainment involving comedy and parody.
Example
The play was a clever burlesque of traditional opera.
C2 noun /bɑːrd/

bard

Meaning
a poet, traditionally one reciting epics and associated with oral traditions
Example
Shakespeare is often called the Bard of Avon.
C2 adjective /ˈbɪz.ən.taɪn/ or /ˈbaɪ.zənˌtiːn/

byzantine

Meaning
Extremely complicated and detailed; relating to the Byzantine Empire or its style.
Example
The new tax regulations are so byzantine that few understand them.
C2 noun /ˈbɛvi/

bevy

Meaning
A large group of people or things of a particular kind.
Example
A bevy of swans floated on the lake.
C2 adjective /ˌbiːəˈtɪfɪk/

beatific

Meaning
blissfully happy or showing great joy
Example
She had a beatific smile after hearing the good news.
C2 verb /bɪˈleɪbər/

belabor

Meaning
to argue or elaborate on a subject in excessive detail; to attack verbally or physically
Example
The professor belabored the point until the students grew restless.
C2 verb /bɪˈhəʊv/

behove

Meaning
British spelling of 'behoove'; to be appropriate or necessary
Example
It would behove the company to listen to its customers.
C2 verb /bɪˈfɪt/

befit

Meaning
to be suitable for; to be appropriate to
Example
Formal attire befits the seriousness of the occasion.
C2 verb /bɪˈfaʊl/

befoul

Meaning
to make dirty or polluted; to disgrace or corrupt
Example
The factory waste befouled the river.
C2 noun /ˈbɪɡ.ə.mi/

bigamy

Meaning
The act of marrying one person while still legally married to another.
Example
He was charged with bigamy after his second marriage was discovered.
C2 noun /biˈætɪtjuːd/

beatitude

Meaning
supreme blessedness or happiness, often used in reference to the sayings of Jesus in the Sermon on the Mount
Example
She felt a state of beatitude after receiving the good news.
C2 verb /ˈblʌdʒən/

bludgeon

Meaning
to hit someone with a heavy object; to force someone into doing something
Example
The guard was bludgeoned by the attacker in the alley.
C2 noun /ˈbɔːl.səm ˈæp.əl/

Balsam apple

Meaning
a bitter gourd vegetable with a bumpy green skin, also known as bitter melon
Example
Balsam apple is cooked with spices to reduce its bitter taste.
C2 noun /ˈbriːtʃɪz/

Breeckes

Meaning
knee-length trousers; short pants
Example
He wore riding breeches for the equestrian event.
C2 adjective, noun /bɪˈtroʊðd/

betrothed

Meaning
Engaged to be married; a person who is engaged.
Example
She introduced him as her betrothed.
C2 verb /bɪˈfʌdəl/

befuddle

Meaning
to confuse someone completely; to make someone unable to think clearly
Example
The complex instructions befuddled the students.
C2 noun /breɪ/

brae

Meaning
A hillside or slope, especially in Scotland.
Example
They climbed up the grassy brae to see the sunset.
C2 verb /bɪˈhuːvz/

behooves

Meaning
third person singular form of 'behoove'; means it is proper or necessary
Example
It behooves every citizen to follow the law.
C2 noun /ˌbædɪˈnɑːʒ/

badinage

Meaning
Playful and humorous conversation; banter.
Example
The friends enjoyed a light badinage over coffee.
C2 noun /bəˈkuːl/

Bakul

Meaning
a fragrant white flower native to South Asia, scientifically known as Mimusops elengi
Example
The sweet fragrance of bakul flowers filled the evening air in the village.
C2 adverb /bɪˈtaɪmz/

betimes

Meaning
early; in good time
Example
She rose betimes to finish her work.
C2 noun /ˈbrɛviˌɛri/

breviary

Meaning
A book containing the service for each day, used in Christian liturgy.
Example
The monk read from the breviary during morning prayers.
C2 verb /ˈbaʊdləˌraɪz/

bowdlerize

Meaning
to remove or modify parts of a text considered offensive or inappropriate
Example
The editor bowdlerized the novel to make it suitable for children.
C2 noun /bɒmˈbeɪ dʌk/

Bombay duck

Meaning
a type of lizardfish found in coastal waters, commonly eaten dried and salted in South Asia
Example
Bombay duck is a popular delicacy when dried and fried.
C2 adjective /ˈbrækɪʃ/

brackish

Meaning
Slightly salty, often describing water that is a mix of fresh and seawater.
Example
The river estuary contained brackish water.
C2 adjective /ˈbɪliəs/

bilious

Meaning
Relating to bile or an ill-tempered, irritable disposition.
Example
He became bilious after hearing the unfair criticism.
C2 noun /ˈbʌt.ər fɪʃ/

Butter-fish

Meaning
a small, smooth-skinned marine fish
Example
The butter-fish is popular in Bengali cuisine.
C2 adjective /ˈbɛərˌfeɪst/

barefaced

Meaning
shameless and undisguised; openly bold or unashamed
Example
He told a barefaced lie in front of everyone.
C2 adjective /ˈbʌmpʃəs/

bumptious

Meaning
Arrogantly self-assertive or conceited.
Example
The bumptious student interrupted the teacher several times.
C2 adjective /baɪˈkæmərəl/

bicameral

Meaning
Having two branches or chambers, especially in a legislature.
Example
The United States has a bicameral legislature consisting of the Senate and the House of Representatives.
C2 verb /bɪˈdaɪzən/

bedizen

Meaning
to dress up or decorate in a showy or tasteless way
Example
She was bedizened with cheap jewelry.
C2 verb /bɪˈleɪbə/

belabour

Meaning
to explain something repeatedly or with excessive detail; to criticize or attack verbally at length
Example
The teacher did not belabour the point once the students understood it.
C2 verb /beɪt/

bate

Meaning
to lessen or restrain; to diminish the force or intensity of something
Example
He spoke with bated breath as he waited for the result.
C2 verb /ˈbraʊˌbiːt/

browbeat

Meaning
To intimidate or bully someone into doing something
Example
The lawyer tried to browbeat the witness.
C2 noun /ˈbæs.tərd tiːk/

Bastard teak

Meaning
A flowering tree with bright orange-red flowers, also known as flame of the forest
Example
The bastard teak tree blooms with vibrant orange flowers in spring.
C2 verb /bɪˈhuːv/

behoove

Meaning
to be necessary, proper, or appropriate for someone to do
Example
It would behoove you to study before the exam.
C2 noun /bænˈdænə/

bandanna

Meaning
A large, often brightly colored handkerchief, typically worn on the head or around the neck.
Example
He tied a red bandanna around his neck.
C2 noun ˌbaɪ.oʊ.əˈveɪ.lə.bɪl.ə.ti

bioavailability

Meaning
The degree to which a substance can be absorbed and used by the body.
Example
Turmeric's bioavailability increases when consumed with black pepper.
C2 noun /ˈbɜːrdʒɪs/

burgess

Meaning
A citizen of a town or borough with full rights of citizenship.
Example
In medieval times, a burgess had the right to vote and hold property.
C2 verb /bɪˈnʌm/

benumb

Meaning
to make physically numb or without sensation; to make mentally dull or insensitive
Example
The freezing wind seemed to benumb his fingers within minutes.
C2 verb /breɪz/

braze

Meaning
To join two pieces of metal by heating and melting a filler metal into the joint.
Example
The mechanic brazed the broken pipe to fix the leak.
C2 noun /bleɪn/

Blain

Meaning
an inflammatory swelling or sore on the skin; a blister or pustule
Example
The doctor examined the blain on his arm.
C2 noun /ˈbɜːrsər/

bursar

Meaning
An official in a school or college responsible for financial affairs.
Example
The bursar approved the budget for the new library.
C2 noun /ˌbræɡəˈdoʊʃioʊ/

braggadocio

Meaning
boastful or arrogant behavior; empty boasting
Example
His endless braggadocio annoyed everyone at the party.
C2 adjective /ˈbɛlɪˌkoʊs/

bellicose

Meaning
Showing a tendency to argue or fight; aggressive.
Example
His bellicose attitude often got him into unnecessary conflicts.
C2 adjective /boʊˈhiːmiən/

bohemian

Meaning
unconventional, artistic, and free-spirited in lifestyle or appearance
Example
She decorated her apartment in a bohemian style with colorful fabrics.
C2 noun /ˈbɑːr.bər/

Barbar

Meaning
a person whose job is to cut men's hair and shave or trim beards
Example
The barber gave him a perfect haircut for his wedding.
C2 verb /ˈbætn/

batten

Meaning
To fasten or secure something tightly.
Example
They battened down the hatches before the storm.
C2 adjective /bɪˈnɪɡnənt/

benignant

Meaning
Kindly and benevolent in nature.
Example
The teacher’s benignant attitude made the students feel comfortable.
C2 verb /ˈblændɪʃ/

blandish

Meaning
to flatter or coax someone with kind words or praise in order to influence them
Example
He blandished the officials with compliments to gain their support.
C2 verb /bɪˈlaɪ/

belie

Meaning
To give a false impression of something; to contradict.
Example
His calm face belied his inner anxiety.
C2 noun /ˈbrɪk.bæt/

Brickbat

Meaning
a piece of brick, especially one used as a missile; harsh criticism or censure
Example
The angry protesters threw brickbats at the building windows.
C2 noun /bɛl/

belle

Meaning
A beautiful woman, especially the most attractive woman at a gathering.
Example
She was the belle of the ball that evening.
C2 adjective /ˈblɪŋkəd/

blinkered

Meaning
Having a limited or narrow outlook; unable or unwilling to consider other perspectives.
Example
His blinkered attitude stopped him from seeing the bigger picture.
C2 noun /ˈbaɪpɛd/

biped

Meaning
An animal that walks on two feet.
Example
Humans are examples of biped creatures.
C2 noun /bɪsk/

bisque

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

briticism

Meaning
a word, phrase, or characteristic feature of British English
Example
The word 'lorry' is a well-known Briticism.
C2 noun /ˈbriːzˌweɪ/

breezeway

Meaning
A roofed outdoor passage, often connecting two buildings.
Example
The breezeway connected the house to the garage.
C2 adjective /ˈboʊvaɪn/

bovine

Meaning
relating to cattle; showing a dull or sluggish nature
Example
Her bovine expression revealed no emotions.
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 noun /ˌbeɪt ˈnwɑːr/

bete noire

Meaning
A person or thing that one particularly dislikes or fears.
Example
Grammar has always been his bete noire.
C2 verb /bɪˈfɒɡ/

befog

Meaning
to confuse or make unclear; to cover with fog or mist
Example
His mind was befogged by exhaustion.
C2 noun /bɪˈnɪɡnɪti/

Benignity

Meaning
kindness; gentleness; the quality of being benign or gracious
Example
Her benignity towards all people made her beloved by everyone.
C2 verb /ˈblækˌbɔːl/

blackball

Meaning
to exclude someone socially or vote against their membership in a group or club
Example
He was blackballed from the club after the controversy.
C2 verb /bɪˈtroʊð/

betroth

Meaning
To formally promise to marry someone; to engage.
Example
He was betrothed to the princess at a young age.
C2 noun /bəˈfuːnəri/

buffoonery

Meaning
Foolish or ridiculous behavior intended to amuse.
Example
His constant buffoonery irritated the serious audience.
C2 noun /ˈbɔːlsəm/

Balsam

Meaning
a flowering plant with colorful blooms that often open in the evening; also refers to aromatic resin
Example
The garden balsam flowers bloomed beautifully in various shades of pink and purple.
C2 adjective /ˈbɔːlki/

balky

Meaning
difficult, uncooperative, or stubborn
Example
The balky printer refused to work when needed most.
C2 adjective /ˈbʊərɪʃ/

boorish

Meaning
Rude, insensitive, and lacking manners or refinement.
Example
His boorish behavior ruined the dinner party.
C2 adjective /bɪˈhoʊldən/

beholden

Meaning
indebted or obliged to someone for a service or help
Example
He felt beholden to his mentor for all the guidance.
C2 adjective /bɪˈfɒɡd/

befogged

Meaning
Confused or clouded in mind; made unclear like being surrounded by fog.
Example
His mind felt befogged after the long and exhausting meeting.
C2 verb /bɪˈmjuːz/

bemuse

Meaning
To confuse or puzzle someone.
Example
The complex instructions bemused the new employees.
C2 verb /bɪˈθɪŋk/

bethink

Meaning
to cause oneself to consider or remember something
Example
He bethought himself of the promise he had made.
C2 noun /ˈbrɔːdˌsaɪd/

broadside

Meaning
a strong verbal attack or a sheet of paper printed on one side
Example
The politician launched a broadside against his opponent.
C2 noun /blæk ˈkɑːr.də.məm/

Black Cardamom

Meaning
a large aromatic spice pod with a smoky flavor, commonly used in Indian and Middle Eastern cooking
Example
Add black cardamom to the curry for a rich, smoky flavor.
C2 noun /ˈboʊsən/

boatswain

Meaning
a ship's officer in charge of equipment and the crew
Example
The boatswain supervised the sailors on deck.
C2 noun /ˈbloʊˌhɑrd/

blowhard

Meaning
a person who brags a lot or talks in a boastful way
Example
Everyone avoided the blowhard at the party because he wouldn't stop bragging.
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.
C2 noun /ˈbrɪɡ.ənd/

brigand

Meaning
A member of a gang that ambushes and robs people in forests or mountains; a bandit.
Example
The travelers were attacked by brigands in the mountains.
C2 noun /bjuːt/

butte

Meaning
an isolated hill with steep sides and a flat top, common in arid regions
Example
The travelers could see a tall butte rising in the desert.
C2 noun /ˈbuːt.leɪs/

Boot-lace

Meaning
a cord or string used to fasten a boot or shoe
Example
I need to tie my boot-lace before going for a walk.
C2 verb /blæsˈfiːm/

blaspheme

Meaning
to speak irreverently about God or sacred things
Example
He was accused of blaspheming during the heated argument.
C2 noun /ˈbiːlaɪn/

beeline

Meaning
a straight, direct route to a destination
Example
He made a beeline for the food table as soon as he entered the party.
C2 noun /ˈbɛlˌwɛðər/

bellwether

Meaning
A person or thing that leads or indicates a trend.
Example
The company is seen as a bellwether of the technology industry.
C2 noun /ˈbeɪleɪ/

Bele

Meaning
a type of freshwater fish found in South Asian rivers, known for its distinctive appearance
Example
The bele fish is commonly caught in the rivers of Bangladesh.
C2 noun /bel ˈæp.əl/

Bell apple

Meaning
a tropical fruit with a crisp texture and sweet taste, scientifically known as Syzygium malaccense
Example
The bell apple tree produces beautiful red fruits that are popular in tropical regions.
C2 verb /bɪˈweɪl/

bewail

Meaning
to express deep sorrow or regret over something; to mourn openly
Example
She bewailed the loss of her childhood home.
C2 adjective /bəˈnɛfɪsənt/

beneficent

Meaning
generous or doing good
Example
The beneficent leader donated funds to build a hospital.
C2 noun /bəˈsuːn/

bassoon

Meaning
a large woodwind instrument with a deep sound
Example
The orchestra featured a beautiful bassoon solo.
C2 verb /bɪˈstruː/

bestrew

Meaning
To scatter or cover something with objects or substances.
Example
The ground was bestrewn with autumn leaves.
C2 adjective /bɪˈfʌdld/

befuddled

Meaning
confused, unable to think clearly
Example
He looked befuddled after hearing the complex instructions.
C2 noun /ˈbreɪziər/

Brazier

Meaning
a worker in brass; a portable container for burning charcoal or coal
Example
The brazier crafted beautiful brass ornaments.
C2 verb /bɪˈtaɪd/

betide

Meaning
to happen or occur, usually of something that befalls someone
Example
Woe betide anyone who breaks the rules.
C2 verb /ˈbeɪɪŋ/

baying

Meaning
making a loud, prolonged barking or howling sound, especially of dogs
Example
The baying of the hounds echoed through the forest.
C2 noun /bʊr/

Boor

Meaning
a rough and bad-mannered person; someone who lacks refinement or culture
Example
The wealthy businessman was actually a boor who showed no respect for others.
C2 adjective /ˌbækəˈneɪliən/

bacchanalian

Meaning
Characterized by or involving drunken revelry.
Example
The students threw a bacchanalian party after the exams.
C2 noun /ˈbiː.təl nʌt/

Betel-nut

Meaning
seed of the areca palm tree, often chewed as a stimulant
Example
Betel-nut is commonly chewed in many South Asian countries.
C2 verb /bɪlk/

bilk

Meaning
To cheat or defraud someone of money or rights.
Example
The scammer tried to bilk elderly people out of their savings.
C2 verb, noun /blæb/

blab

Meaning
to talk too much or reveal secrets carelessly; excessive or foolish talk
Example
He accidentally blabbed the surprise to everyone.
C2 noun /ˈbrɪn.dʒəl/

Brinjal

Meaning
a large purple vegetable that is white inside; also called eggplant
Example
My mother cooked brinjal curry for lunch.
C2 noun /bɛk/

beck

Meaning
a gesture of beckoning; a small stream or brook (chiefly Northern English)
Example
The servant came at his master's beck and call.
C2 verb /ˈbɜːrnɪʃ/

burnish

Meaning
To polish something by rubbing; to enhance or improve.
Example
He burnished the old table until it shone.
C2 noun /blæk biː/

Black-bee

Meaning
a large dark-colored bee that makes a loud buzzing sound
Example
The black-bee was buzzing around the flowers in the garden.
C2 noun /briːtʃ/

breech

Meaning
The back part of a gun barrel; a position of a baby in the womb where the buttocks or feet come out first at birth.
Example
The rifle was loaded through the breech.
C2 noun ˈbaɪəʊˌsaɪd

biocide

Meaning
A chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism.
Example
Biocides help control pests and reduce the spread of diseases.
C2 noun /ˈbuː.jɒ̃/

bouillon

Meaning
A clear, seasoned broth made by simmering meat, fish, or vegetables in water.
Example
She added vegetables to the bouillon for extra flavor.
C2 adjective /ˈbræsi/

brassy

Meaning
loud and showy in a way that lacks good taste; resembling brass in color or sound
Example
She wore a brassy necklace that caught everyone’s attention.