biocide
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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 adjective /bɪˈnɪɡnənt/

benignant

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

bombast

Meaning
speech or writing that is overly pompous and inflated
Example
His campaign speech was full of bombast but lacked real substance.
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 /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 adjective /ˌbiːəˈtɪfɪk/

beatific

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

bacchanalia

Meaning
A Roman festival of Bacchus celebrated with dancing, drinking, and revelry; any occasion of wild and drunken revelry.
Example
The novel describes the party as a bacchanalia of excess and joy.
C2 adjective /beɪˈkoʊniən/

baconian

Meaning
Relating to the philosopher Francis Bacon or his method of scientific reasoning.
Example
The researcher followed a Baconian approach to observation and experimentation.
C2 adjective /ˈbaɪ.fərˌkeɪ.tɪd/

bifurcated

Meaning
Divided into two branches or parts.
Example
The river became bifurcated as it flowed around the island.
C2 noun /ˈbed.ləm/

Bedlam

Meaning
a scene of noisy confusion; chaos and disorder
Example
The classroom was complete bedlam after the fire alarm.
C2 noun /bəˈnæləti/

banality

Meaning
The condition of being unoriginal, boring, or obvious; trite remark or quality.
Example
The speech was criticized for its banality and lack of originality.
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 adjective /ˈbʌlbəs/

bulbous

Meaning
Bulging, round, or swollen in shape; resembling a bulb.
Example
The frog had a bulbous nose and big eyes.
C2 noun /ˈbærəˌɡræf/

barograph

Meaning
an instrument that records changes in atmospheric pressure
Example
The scientist checked the barograph for pressure variations.
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 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 /bɪˈmjuːz/

bemuse

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

besmear

Meaning
to smear or cover with a sticky or dirty substance; to soil
Example
His clothes were besmeared with mud.
C2 noun /ˈbriːtʃɪz/

Breeckes

Meaning
knee-length trousers; short pants
Example
He wore riding breeches for the equestrian event.
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 /ˈbrɪtɪˌsɪzəm/

briticism

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

Bonny

Meaning
cheerful; pretty; attractive
Example
The bonny child played happily in the garden.
C2 noun /ˌbædɪˈnɑːʒ/

badinage

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

bolero

Meaning
A Spanish dance in slow triple time, or a short jacket open at the front.
Example
The dancers performed a passionate bolero at the festival.
C2 noun /ˈbælæst/

ballast

Meaning
heavy material used to stabilize a ship or vehicle
Example
The ship was loaded with ballast to remain steady in the storm.
C2 noun /buːb/

boob

Meaning
a foolish or clumsy person; an informal and sometimes rude term for a woman's breast
Example
He felt like a complete boob after forgetting the meeting.
C2 noun /ˈbʌskɪn/

buskin

Meaning
A type of thick-soled boot that reaches halfway to the knee; also associated with tragic drama in ancient times.
Example
The actor wore a buskin as part of his classical costume.
C2 adjective /bəˈθɛt.ɪk/

bathetic

Meaning
displaying insincere or trivial emotion; producing an unintended ridiculous effect through sudden change from serious to silly
Example
The movie's ending was unintentionally bathetic rather than tragic.
C2 noun /breɪ/

brae

Meaning
A hillside or slope, especially in Scotland.
Example
They climbed up the grassy brae to see the sunset.
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 /ˌbuː.ɡənˈvɪl.i.ə/

Bougainvillea

Meaning
a tropical climbing plant with colorful bracts surrounding small flowers
Example
The bougainvillea climbing over the garden wall creates a beautiful purple display.
C2 noun /broʊɡ/

brogue

Meaning
A strong outdoor shoe; also a marked accent, especially Irish or Scottish.
Example
He bought a pair of stylish brogues for the wedding.
C2 noun /ˌbenɪˈdɪkʃən/

Benediction

Meaning
a blessing, especially a ceremonial one; an expression of good wishes
Example
The priest gave his benediction to the newlyweds.
C2 verb /breɪ/

bray

Meaning
To make a loud, harsh sound like a donkey.
Example
The donkey began to bray loudly in the field.
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 adjective /baɪˈɛniəl/

biennial

Meaning
happening every two years
Example
The biennial festival attracts thousands of visitors.
C2 verb /ˈbæstərdaɪz/

bastardize

Meaning
to corrupt or debase something by altering it from its original form; to change in a way that reduces quality or purity
Example
Critics argue that the remake bastardized the original novel.
C2 noun /ˈbɔːbəl/

bauble

Meaning
A small, decorative trinket or ornament, often of little value.
Example
She wore a shiny bauble around her neck.
C2 noun /ˌbæstərdaɪˈzeɪʃən/

bastardization

Meaning
the act of corrupting, degrading, or misrepresenting something
Example
Critics called the remake a bastardization of the original film.
C2 noun /ˈbroʊɡən/

brogan

Meaning
A heavy, sturdy shoe, often made of leather.
Example
The farmer wore old brogans while working in the field.
C2 adjective /ˌbækəˈneɪliən/

bacchanalian

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

bromide

Meaning
A trite or unoriginal idea or remark; also a chemical compound of bromine.
Example
His speech was full of old bromides about hard work.
C2 adjective /ˈbʌsti/

busty

Meaning
having a large or full bust; describing a woman with a prominent chest
Example
The actress was often described as busty in fashion magazines.
C2 verb /bɪˈfɒɡ/

befog

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

Blue-blood

Meaning
a person of noble birth; aristocrat
Example
She came from a family of blue-bloods with centuries of royal heritage.
C2 verb /bɪˈlaɪ/

belie

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

brocade

Meaning
a rich fabric woven with a raised pattern, often in gold or silver thread
Example
She wore a beautiful brocade dress to the wedding.
C2 adjective /ˈbuːtləs/

bootless

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

bravura

Meaning
a display of great skill and brilliance, especially in music or performance
Example
The pianist delivered a bravura performance that left the audience spellbound.
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 noun /ˈbɑːrtərər/

barterer

Meaning
A person who trades goods or services without using money.
Example
The barterer exchanged fruits for some pottery.
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 /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 /ˈbæn.jən/

Banian

Meaning
a sleeveless undergarment worn next to the skin; vest
Example
He put on a cotton banian under his shirt.
C2 noun /brɔːn/

brawn

Meaning
physical strength in contrast to intelligence
Example
He used his brawn to lift the heavy box.
C2 verb /bɪˈstraɪd/

bestride

Meaning
To sit or stand astride something; to dominate over.
Example
The statue bestrides the city square.
C2 noun /ˌbʌkəˈnɪər/

buccaneer

Meaning
a pirate, especially one active in the Caribbean during the 17th and 18th centuries
Example
The buccaneer sailed across the Caribbean in search of treasure.
C2 noun /ˈbuːbi/

booby

Meaning
a foolish or gullible person; a silly individual
Example
He felt like a booby after making such a simple mistake.
C2 verb /bɪˈleɪ/

belay

Meaning
to secure a rope by winding it around an object; to stop or cancel an order (nautical/military use)
Example
The climber asked his partner to belay the rope tightly.
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 /bɪˈsiːtʃ/

beseech

Meaning
To ask someone urgently and fervently to do something; to beg.
Example
He beseeched the judge for mercy.
C2 verb /bɪˈɡaɪl/

beguile

Meaning
to charm or enchant someone, often in a deceptive way
Example
She beguiled the audience with her storytelling.
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 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 noun brəˈvɑː.dəʊ

bravado

Meaning
Show of courage or confidence that is not real.
Example
His bravado masked his nervousness before the performance.
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 /ˈbɔːdi/

bawdy

Meaning
humorously indecent or obscene, often in a sexual way
Example
The comedian’s bawdy jokes made the audience laugh and blush.
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 adjective /ˈbɛərˌfeɪst/

barefaced

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

baste

Meaning
to pour or brush melted fat, juices, or liquid over meat during cooking to keep it moist
Example
She basted the turkey every 30 minutes to keep it juicy.
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 /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 /baɪt/

bight

Meaning
A bend or curve in a geographical feature, especially a coastline, or a loop in a rope.
Example
The sailors anchored in the calm waters of the bight.
C2 noun /bɪsk/

bisque

Meaning
A rich, creamy soup made from shellfish.
Example
We ordered lobster bisque at the restaurant.
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 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 /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 /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 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 verb /ˈbɒtənaɪz/

botanize

Meaning
to study plants in their natural environment
Example
They went to the forest to botanize during their vacation.
C2 noun /ˌbeɪˈliː/

bailee

Meaning
a person or party who temporarily receives possession of goods or property from another under a legal agreement
Example
The bailee must take reasonable care of the goods while they are in his possession.
C2 noun /boʊl/

bole

Meaning
the trunk of a tree
Example
The bole of the tree was thick and strong.
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 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 noun /ˈbaɪəˌɡræf/

biograph

Meaning
A written account of a person's life; an early motion-picture projector (historical use).
Example
The library holds an old biograph of the poet.
C2 adjective /ˈboʊvaɪn/

bovine

Meaning
relating to cattle; showing a dull or sluggish nature
Example
Her bovine expression revealed no emotions.
C2 noun /ˈbɪlɪŋzˌɡeɪt/

billingsgate

Meaning
Coarse or abusive language; vulgar or offensive speech.
Example
The heated argument quickly descended into billingsgate.
C2 noun /brɪˈtæniə/

britannia

Meaning
the personification of Britain, often shown as a woman with a helmet and shield
Example
Britannia has been a symbol of Britain since Roman times.
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 noun /ˈbɑːr.nɪ.kəl/

Barnacle

Meaning
a marine crustacean that attaches itself permanently to underwater surfaces
Example
The old ship's hull was covered with barnacles.
C2 noun /ˈbɪvuˌæk/

bivouac

Meaning
a temporary camp without tents or cover, usually used by soldiers or mountaineers
Example
The climbers set up a bivouac on the mountainside.
C2 noun /ˈbʊlrʌʃ/

bulrush

Meaning
A tall plant with long leaves that grows in or near water, also known as a cattail.
Example
The pond was surrounded by tall bulrushes swaying in the wind.
C2 noun /ˈbɛnɪfɪs/

benefice

Meaning
a permanent church appointment for which property and income are provided
Example
The bishop appointed him to a wealthy benefice.
C2 verb /ˈbleɪzən/

blazon

Meaning
to display prominently or vividly
Example
The slogan was blazoned across the banner in bold letters.
C2 adjective /ˈblaɪðsəm/

blithesome

Meaning
cheerful, carefree, and full of joy
Example
She entered the room with a blithesome smile that lifted everyone's spirits.
C2 adjective /ˈbiːstiəl/

bestial

Meaning
Relating to beasts; showing savagery, brutality, or lacking human sensibility.
Example
The prisoners were treated in a bestial manner.
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.
C2 verb /ˈbɪloʊ/

billow

Meaning
To swell or rise in large waves or surges; to flow outward in a rolling motion.
Example
Smoke billowed from the burning building.
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 verb /ˈbætn/

batten

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

boll

Meaning
The rounded seed capsule of plants such as cotton or flax.
Example
The farmer examined the cotton boll to check its quality.
C2 adverb /ˈbruːskli/ or /ˈbrʌskli/

brusquely

Meaning
in a blunt, abrupt, or rude manner
Example
She brusquely dismissed the suggestion.
C2 noun /bəˈfuːnəri/

buffoonery

Meaning
Foolish or ridiculous behavior intended to amuse.
Example
His constant buffoonery irritated the serious audience.
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 verb /bɪˈθɪŋk/

bethink

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

bonhomie

Meaning
Cheerful friendliness and geniality.
Example
The meeting was filled with laughter and bonhomie.
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 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 /bɪˈhiː.mɒθ/

behemoth

Meaning
Something enormous, especially a large and powerful organization.
Example
The company grew into a corporate behemoth.
C2 noun /ˈbrɪk ə ˌbræk/

bric-a-brac

Meaning
Small decorative objects or ornaments, often of little value.
Example
The shelves were filled with old bric-a-brac from her travels.
C2 noun /ˈbræɡərt/

braggart

Meaning
a person who boasts about achievements or possessions
Example
No one liked him because he was such a braggart.
C2 noun /ˈbroʊmiːn/

bromine

Meaning
a dark red, dense, toxic liquid element used in making dyes, flame retardants, and medications
Example
Bromine is commonly used in water treatment chemicals.
C2 verb /bruːt/

bruit

Meaning
to spread a rumor or report widely
Example
The scandal was quickly bruited about the town.