battery
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A2 noun /ˈbætəri/

battery

Meaning
A device that stores and provides electrical energy; also refers to a group of similar things or repeated blows.
Example
The phone battery ran out after a long day.
C1 adjective /ˌboʊnəˈfaɪdi/

Bonafide

Meaning
genuine; authentic; legitimate
Example
She is a bonafide expert in her field.
B2 noun /ˈbrɛkdaʊn/

breakdown

Meaning
a failure or collapse of a system or machinery
Example
The car had a breakdown on the highway.
B1 noun /bɪˈheɪvjər/

behavior

Meaning
The way in which one acts or conducts oneself, especially toward others.
Example
The teacher praised her good behavior in class.
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.
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.
C2 noun /bɪsk/

bisque

Meaning
A rich, creamy soup made from shellfish.
Example
We ordered lobster bisque at the restaurant.
A1 noun /ˈbrek.fəst/

Breakfast

Meaning
the first meal of the day, usually eaten in the morning
Example
I had cereal and toast for breakfast this morning.
A2 noun /ˈbʌk.ɪt/

Bucket

Meaning
a roughly cylindrical open container with a handle, used to hold and carry liquids
Example
The farmer filled the bucket with fresh water from the well.
B1 noun ˈbæl.ənst daɪ.ət

balanced diet

Meaning
A diet consisting of the proper quantities and proportions of foods needed to maintain health or growth.
Example
A balanced diet is essential for maintaining good health.
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 adjective /ˈbaʊn.tɪ.fəl/

bountiful

Meaning
Large in quantity; abundant; generous in giving.
Example
The farmer was grateful for the bountiful harvest.
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.
B2 noun /braɪb/

Bribe

Meaning
a sum of money or something valuable given to someone to persuade them to do something dishonest or illegal
Example
The corrupt official was caught accepting a bribe from the construction company.
C2 verb /bruːt/

bruit

Meaning
to spread a rumor or report widely
Example
The scandal was quickly bruited about the town.
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 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.
A2 noun /ˈbʊkstɔːr/

bookstore

Meaning
a shop where books are sold
Example
She spent an entire afternoon browsing in the bookstore.
A1 noun /bæɡ/

bag

Meaning
a container made of flexible material, used for carrying items
Example
She carried her books in a bag.
A1 verb /brɪŋ/

bring

Meaning
to carry or take something to a place; to come with something
Example
Please bring your books to class tomorrow.
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 /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.
C1 adjective /ˈbrɪslɪŋ/

bristling

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

bendy

Meaning
Easily curved or flexible.
Example
The bendy straw made it easier to drink from the cup.
B2 noun ˈbænd.wɪdθ

bandwidth

Meaning
A range of frequencies within a given band, in particular that used for transmitting a signal; the maximum amount of data that can be transmitted in a fixed amount of time.
Example
Increasing bandwidth enhances internet speed.
B2 adjective /bɪˈzɑːr/

bizarre

Meaning
very strange or unusual, especially so as to cause interest or amusement
Example
He told a bizarre story that no one could believe.
A1 noun /ˈbɔɪˌfrɛnd/

boyfriend

Meaning
a man or boy that someone is having a romantic or close relationship with
Example
She introduced her boyfriend to her parents.
C2 noun /ˈbʌɡəˌbuː/

bugaboo

Meaning
An object of fear or worry; an imagined cause of anxiety.
Example
The threat of inflation became a political bugaboo.
C2 adjective /ˈbʊərɪʃ/

boorish

Meaning
Rude, insensitive, and lacking manners or refinement.
Example
His boorish behavior ruined the dinner party.
B2 noun, verb /bluːm/

bloom

Meaning
to produce flowers; to develop or flourish; a flower or the state of flowering
Example
The roses bloom beautifully every spring.
A2 verb /ˈbɒðər/

bother

Meaning
to annoy, worry, or cause trouble to someone
Example
I don't want to bother you while you're working.
B2 noun, verb /blæst/

blast

Meaning
a strong gust of wind, an explosion, or a loud sound; to destroy or shatter by explosion
Example
The explosion sent a powerful blast through the building.
C1 adjective bəˈnev.əl.ənt

benevolent

Meaning
Kind, generous, showing goodwill and kindness.
Example
His benevolent nature made him beloved.
C2 verb /ˈbaɪfərˌkeɪt/

bifurcate

Meaning
to divide into two branches or parts
Example
The road bifurcates into two separate paths at the hill.
B1 verb /beɪð/

bathe

Meaning
to wash oneself; to clean the body with water
Example
I bathe every morning before going to work.
B2 adjective /ˈbʌmpi/

Bumpy

Meaning
having an uneven surface; rough; jolting
Example
The bumpy road made the car ride very uncomfortable.
B2 adjective /bɪˈliːvəbl̩/

believable

Meaning
Able to be trusted or accepted as true or reasonable.
Example
Her story was so detailed that it sounded believable.
C1 adjective /bəˈlɪdʒ.ər.ənt/

belligerent

Meaning
Hostile and aggressive, ready to fight or argue.
Example
His belligerent attitude often leads to conflicts.
A1 interjection /baɪ/

bye

Meaning
used to say goodbye; a short and informal farewell
Example
I said bye to her before leaving.
A2 noun /brɛθ/

breath

Meaning
The air taken into or expelled from the lungs during breathing.
Example
He took a deep breath before speaking.
C2 adjective /ˈbrɔːni/

brawny

Meaning
Physically strong and muscular.
Example
The brawny man lifted the heavy box with ease.
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 /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.
B1 noun /brif/

Brief

Meaning
a concise statement of the facts; a set of instructions given to a person about a job or task
Example
The lawyer received a detailed brief about the upcoming court case.
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.
B2 noun ˈbluː.prɪnt

blueprint

Meaning
A detailed plan or framework for a work or project, a pre-planned structure.
Example
The architect presented a blueprint for the new building.
C2 adjective /ˈbeɪlfəl/

baleful

Meaning
Threatening harm; menacing or expressing hatred.
Example
She gave him a baleful look after the insult.
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.
C1 adjective /ˈbleɪmləs/

blameless

Meaning
innocent of wrongdoing; not deserving blame
Example
She remained calm and blameless throughout the investigation.
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 /ˈbɑːrbərɪzəm/

Barbarism

Meaning
extreme cruelty or brutality; absence of culture and civilization
Example
The barbarism of the war crimes shocked the entire international community.
B1 verb /bliːd/

bleed

Meaning
to lose blood from the body, especially due to injury
Example
She began to bleed from the cut on her arm.
C2 adjective /ˈboʊvaɪn/

bovine

Meaning
relating to cattle; showing a dull or sluggish nature
Example
Her bovine expression revealed no emotions.
C1 adjective /bəˈzɜːrk/

berserk

Meaning
Out of control with anger or excitement; wild or frenzied.
Example
The fans went berserk when their team won the championship.
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 /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.
A1 noun /boʊt/

Boat

Meaning
a small vessel for traveling over water
Example
We took a small boat to cross the river.
C1 verb /bɔːk/

balk

Meaning
to hesitate or refuse to proceed or comply
Example
She balked at signing the contract without reading it fully.
B2 noun /buːˈtiːk/

boutique

Meaning
a small shop that sells fashionable clothes or accessories
Example
She bought a beautiful dress from a boutique downtown.
C2 adverb /bɪˈtaɪmz/

betimes

Meaning
early; in good time
Example
She rose betimes to finish her work.
A1 noun /bɪt/

Bit

Meaning
a small piece or quantity of something; a short time or distance
Example
Can you wait a bit longer for me?
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.
C2 verb /ˈbætn/

batten

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

belie

Meaning
To give a false impression of something; to contradict.
Example
His calm face belied his inner anxiety.
B2 noun /ˈbɒt.əl.nek/

bottleneck

Meaning
Narrow path or obstruction, a place or situation where flow becomes slow.
Example
The narrow bridge is a major bottleneck during rush hour.
B2 noun /ˈbjʊəroʊ/

bureau

Meaning
An office or agency that provides services or manages specific duties.
Example
The travel bureau helped them plan their vacation.
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.
C1 noun /ˌbaɪˈlæt.ər.əl nɪˌɡəʊ.ʃiˈeɪ.ʃənz/

bilateral negotiations

Meaning
Negotiations or discussions between two parties, typically countries or organizations.
Example
Bilateral negotiations resolve disputes.
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.
B1 verb /bɜːrst/

burst

Meaning
to break open suddenly; to be full of something
Example
The balloon bursts with a loud pop.
C1 adjective /ˈblʌdləs/

bloodless

Meaning
without bloodshed; lacking violence or vitality
Example
The revolution was surprisingly bloodless.
A1 adjective /bɛst/

best

Meaning
Of the highest quality, excellence, or standing.
Example
She is the best student in the class.
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.
B2 noun /brest/

Breast

Meaning
the front surface of a person's or animal's body between the neck and the stomach
Example
The baby fell asleep on her mother's breast.
B2 noun /brɑːnz/

bronze

Meaning
a metal made by combining copper and tin, often used for statues and medals
Example
The statue was made of solid bronze.
B2 noun, verb /ˈbʌŋkər/

bunker

Meaning
a reinforced underground shelter; to place or store something in a protected place
Example
They hid in a bunker during the air raid.
B2 verb /bleɪz/

blaze

Meaning
to burn brightly or powerfully
Example
The fire blazed for hours before it was brought under control.
B2 noun /ˈbrɔːdˌkæstər/

broadcaster

Meaning
a person or organization that transmits a broadcast program.
Example
The broadcaster aired the match live to millions of viewers.
C1 noun /bəˈrɒmɪtər/

barometer

Meaning
an instrument that measures atmospheric pressure
Example
The barometer indicated a storm was approaching.
B2 verb /ˈbɔɪkɑt/

boycott

Meaning
to refuse to buy, use, or participate in something as a protest
Example
They decided to boycott the company's products.
A1 preposition/adverb/conjunction /bɪˈfɔːr/

before

Meaning
At an earlier time; in front of in order or place.
Example
She arrived before the meeting started.
B1 noun /boʊ/

Bow

Meaning
a weapon for shooting arrows, made of a curved piece of wood
Example
The archer drew his bow and aimed at the target.
B2 noun ˈbaɪ.əʊˌfjuː.əl

biofuel

Meaning
A fuel derived immediately from living matter, as opposed to fossil fuels derived from long-dead biological matter.
Example
Biofuels reduce dependence on conventional energy sources.
B1 noun /bloʊ/

Blow

Meaning
a powerful stroke with a hand, weapon, or hard object
Example
The boxer delivered a devastating blow to his opponent.
B2 verb /buːst/

boost

Meaning
To increase, improve, or raise something.
Example
The company launched a campaign to boost sales.
B1 noun /bʊl/

bull

Meaning
a male animal of the cattle family; sometimes refers to a strong or aggressive man
Example
The bull charged across the field towards the red flag.
B2 noun /ˈbriː.ðɪŋ tɛkˌniːks/

breathing techniques

Meaning
Methods of controlling breathing to achieve relaxation and improve health.
Example
Breathing techniques help in reducing stress and anxiety.
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 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.
A2 adjective /ˈbeɪ.sɪk/

Basic

Meaning
fundamental; essential; forming the foundation or starting point
Example
Learning basic English grammar is essential for beginners.
A2 noun/verb /ˈbætəl/

battle

Meaning
A fight between armed forces or a struggle to achieve or resist something.
Example
The soldiers prepared for the final battle.
A2 noun /ˈbʌdi/

buddy

Meaning
a close friend or companion, used informally
Example
He went to the movies with his best buddy.
A1 adjective /ˈbjuː.tɪ.fəl/

Beautiful

Meaning
pleasing to the senses; attractive; having qualities that give great pleasure
Example
She has a beautiful voice that captivates everyone.
A1 noun /bɜːrd/

bird

Meaning
a warm-blooded animal with feathers and wings that usually lays eggs and can often fly
Example
A bird was singing on the tree branch.
C1 verb /bɪˈreɪt/

berate

Meaning
to scold or criticize angrily
Example
The teacher berated the student for being late.
B2 noun /biːm/

beam

Meaning
a ray or shaft of light; a long piece of wood or metal used to support weight
Example
A beam of sunlight entered through the window.
A2 noun, verb /bræntʃ/

branch

Meaning
A part of a tree that grows out from the trunk; a division of an organization or subject.
Example
The company opened a new branch in Dhaka.
C1 adjective /ˈblaɪtɪd/

blighted

Meaning
Spoiled, damaged, or destroyed.
Example
The blighted neighborhood was abandoned by most residents.
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 /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.
A2 verb /bæt/

bat

Meaning
to hit with a bat; to flutter eyelids
Example
She bats her eyelashes flirtatiously.
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.
A2 noun ˈbʌt.ən

button

Meaning
A small disk or knob sewn onto a garment, either to fasten it by being pushed through a slit made for the purpose, or for decoration.
Example
Press the button to activate the device.
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 /ˈbɪbjələs/

bibulous

Meaning
Excessively fond of drinking alcohol.
Example
His bibulous habits worried his family.
A2 noun /ˈbjuː.ti/

Beauty

Meaning
the quality of being pleasing to look at; attractiveness
Example
The beauty of the sunset took my breath away.
C2 verb /bɪˈfaʊl/

befoul

Meaning
to make dirty or polluted; to disgrace or corrupt
Example
The factory waste befouled the river.
C1 noun /beɪn/

bane

Meaning
A cause of great distress, harm, or annoyance.
Example
Traffic jams are the bane of city life.
B2 noun/verb /ˈbʌfər/

buffer

Meaning
Something that lessens or absorbs the impact of a shock; to act as a protective barrier.
Example
The organization acts as a buffer between workers and management.
C1 noun /bɪz/

Biz

Meaning
business (informal); commercial enterprise or activity
Example
He's been in the restaurant biz for twenty years.
B2 noun /bɪˈliːvər/

believer

Meaning
a person who believes in something, especially a religious faith, idea, or principle
Example
She is a strong believer in hard work and honesty.
C2 noun /ˈbeɪlɔːr/

bailor

Meaning
a person who temporarily transfers possession of goods or property to another under a bailment agreement
Example
The bailor entrusted the valuable artwork to the museum for safekeeping.
A2 verb /bɪˈlɒŋ/

belong

Meaning
to be in the right place or to be a member of a group
Example
She felt she truly belonged to the team.
B2 noun/verb /bʌst/

bust

Meaning
As a noun: A sculpture of a person's head, shoulders, and chest; As a verb: To break, smash, or arrest.
Example
The police busted the gang last night.
C1 noun /bɒmˈbɑːrdmənt/

bombardment

Meaning
a continuous attack with bombs or other projectiles
Example
The city endured a heavy bombardment during the war.
B2 verb /buːm/

boom

Meaning
to make a loud deep sound; to grow or increase rapidly
Example
The thunder boomed across the sky.
A2 noun /biːn/

Bean

Meaning
an edible seed, typically kidney-shaped, growing in long pods on certain leguminous plants
Example
We planted green beans in our vegetable garden this spring.
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.
B1 noun /bʌlb/

bulb

Meaning
a rounded glass part of an electric lamp that produces light when lit; also an underground storage organ in some plants
Example
The light bulb burned out, so she replaced it with a new one.
B2 noun /biːk/

Beak

Meaning
the hard pointed part of a bird's mouth
Example
The eagle has a sharp beak for tearing meat.
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.