beta test
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idiom

beta test

Meaning
to test a product before official release
Example
We are going to **beta test** our app next week.
idiom

burning the candle at both ends

Meaning
working very hard without enough rest
Example
He is **burning the candle at both ends** with two jobs.
idiom

bark up the wrong tree

Meaning
to make a wrong assumption
Example
If you think I took your wallet, you’re **barking up the wrong tree**.
idiom

build castles in the air

Meaning
to make unrealistic plans or dreams
Example
He’s always **building castles in the air** instead of acting.
idiom

big brother

Meaning
an older brother or someone who behaves protectively
Example
Mark acts like a **big brother** to everyone in the neighborhood.
idiom

believe you can

Meaning
to have the mindset that you are capable of doing something
Example
If you **believe you can**, you’re halfway there.
idiom

by and large

Meaning
generally speaking; on the whole
Example
**By and large**, we agree with your proposal.
idiom

beyond words

Meaning
too great or extreme to be described in words
Example
Her kindness was **beyond words**.
idiom

bosom friends

Meaning
very close and intimate friends
Example
They have been **bosom friends** since childhood.
idiom

back each other up

Meaning
to support and help one another
Example
In a good team, members always **back each other up**.
idiom

bag of bones

Meaning
a very thin person
Example
After his illness, he turned into a **bag of bones**.
idiom

balance the books

Meaning
to make sure income and expenses are equal
Example
The accountant worked late to **balance the books**.
idiom

break one's word

Meaning
to fail to keep a promise
Example
Don’t **break your word**; people rely on you.
idiom

beyond one’s grasp

Meaning
too difficult to understand or achieve
Example
Quantum physics is **beyond my grasp** right now.
idiom

brand loyalty

Meaning
the tendency of consumers to keep buying the same brand
Example
**Brand loyalty** often depends on consistent quality.
idiom

beam me up

Meaning
to leave a place quickly or escape an unpleasant situation
Example
This meeting is so boring—someone please **beam me up**!
idiom

blaze a trail

Meaning
to be the first to do something innovative
Example
She **blazed a trail** in renewable energy research.
idiom

beyond the scope

Meaning
outside the planned or expected area of focus
Example
The new feature was beyond the scope of the original project but added great value.
idiom

break even

Meaning
to have equal income and expenses, neither profit nor loss
Example
The company finally **broke even** after three years.
idiom

burn bridges

Meaning
to destroy relationships or connections permanently
Example
Be careful not to **burn bridges** when leaving your job.
idiom

break your back

Meaning
to work very hard to achieve something
Example
He’s been **breaking his back** to support his family.
idiom

bottle up feelings

Meaning
to keep emotions inside without expressing them
Example
It's not healthy to **bottle up your feelings** for too long.
idiom

burst of inspiration

Meaning
a sudden feeling of creativity or motivation
Example
He wrote the poem in a **burst of inspiration**.
idiom

black and white

Meaning
clearly defined; without confusion or ambiguity
Example
The contract terms are **black and white**.
idiom

break the bank

Meaning
to cost too much; to use up all your money
Example
Buying that car will **break the bank**.
idiom

bad blood

Meaning
anger or resentment between family members
Example
There’s still **bad blood** between the cousins after the inheritance issue.
idiom

bear with

Meaning
to be patient with someone or something
Example
Please **bear with** us while we resolve the issue.
idiom

backdoor access

Meaning
a secret or unauthorized way to access a system or information
Example
Hackers found a **backdoor access** to the company’s database.
idiom

build up your confidence

Meaning
to gradually become more confident
Example
Public speaking can help you **build up your confidence**.
idiom

battle of wills

Meaning
a conflict where both sides refuse to give up
Example
It became a **battle of wills** between the manager and the team leader.
idiom

be on duty

Meaning
to be working or responsible for something at a certain time
Example
The guard was **on duty** all night.
idiom

buy a lemon

Meaning
to buy something that is defective or worthless
Example
He **bought a lemon** when he got that used car.
idiom

Breaking news

Meaning
New and important information being reported immediately
Example
We have **breaking news** about the election results.
idiom

bail someone out

Meaning
to help someone out of a difficult situation
Example
His friend **bailed him out** when he ran out of money.
idiom

bury your head in the sand

Meaning
to ignore a problem hoping it will go away
Example
We can’t **bury our heads in the sand** about climate change any longer.
idiom

beyond reasonable doubt

Meaning
without any logical uncertainty
Example
The jury found him guilty **beyond reasonable doubt**.
idiom

break the clutter

Meaning
to stand out in a crowded or competitive market
Example
A good tagline can help a brand **break the clutter**.
idiom

birds of a feather

Meaning
people with similar interests or characteristics
Example
Tom and Jerry are always together—**birds of a feather**.
idiom

build bridges

Meaning
to improve relationships between people
Example
We need to **build bridges** between our two departments.
idiom

bite the dust

Meaning
to fail or be defeated
Example
Several small startups **bit the dust** last year.
idiom

butterflies in the stomach

Meaning
feeling nervous or excited
Example
I always get **butterflies in my stomach** before a date.
idiom

break the deadlock

Meaning
to end a situation in which progress is not possible
Example
They finally managed to **break the deadlock** through discussion.
idiom

brush aside

Meaning
to dismiss something as unimportant
Example
Management **brushed aside** the rumors during the briefing.
idiom

burning the midnight oil

Meaning
working late into the night
Example
She’s been **burning the midnight oil** to finish the report.
idiom

bring luck

Meaning
to cause good fortune
Example
This bracelet is said to **bring luck** to whoever wears it.
idiom

behind someone’s back

Meaning
to do something secretly without their knowledge
Example
She was talking about me **behind my back**.
idiom

bounce back

Meaning
to recover quickly after a setback or failure
Example
She **bounced back** after losing the competition.
idiom

backpropagation

Meaning
a learning algorithm used in neural networks to minimize error by adjusting weights through the network
Example
The **backpropagation** algorithm helps in optimizing the neural network's performance.
idiom

birds of a feather flock together

Meaning
People who have similar interests or personalities tend to be friends.
Example
John and Mike are always together; well, **birds of a feather flock together**.
idiom

bring home the bacon

Meaning
to earn money to support the family
Example
He works hard every day to **bring home the bacon**.
idiom

back on your feet

Meaning
recovered and healthy again
Example
It’s good to see you **back on your feet** after the flu.
idiom

blow your top

Meaning
to become very angry
Example
He **blew his top** when he found out about the mistake.
idiom

black hat

Meaning
a hacker with malicious intent
Example
**Black hats** often exploit vulnerabilities for personal gain.
idiom

be a role model

Meaning
to be an example that others should imitate
Example
She is always a **role model** for younger employees in the company.
idiom

breathe in

Meaning
to inhale air deeply
Example
Take a moment to **breathe in** before you speak.
idiom

burned out

Meaning
completely exhausted or tired due to overwork
Example
After months of overtime, she felt **burned out**.
idiom

burning ambition

Meaning
a very strong desire to achieve something
Example
He had a **burning ambition** to become a successful entrepreneur.
idiom

bare your soul

Meaning
to share your deepest feelings or secrets honestly
Example
She **bared her soul** to her best friend.
idiom

behind closed doors

Meaning
in private; secretly
Example
The deal was made **behind closed doors**.
idiom

burn your boats

Meaning
to commit yourself to a course of action without a way back
Example
He **burned his boats** when he quit his job to start a business.
idiom

be on the same page

Meaning
to agree with someone or have the same understanding
Example
Before getting married, they made sure they were **on the same page** about their future.
idiom

bent over backwards

Meaning
to try very hard to help or please someone
Example
She **bent over backwards** to make sure everyone was happy.
idiom

Break with tradition

Meaning
To do something in a different way from what is usually done
Example
The couple decided to **break with tradition** and have a small wedding on the beach.
idiom

bull market

Meaning
a period when prices of stocks are rising
Example
Investors are optimistic during a **bull market**.
idiom

back away from

Meaning
to retreat or withdraw from a situation
Example
He chose to **back away from** the argument before it escalated.
idiom

brand awareness

Meaning
the extent to which consumers are familiar with a brand
Example
Our main goal is to increase **brand awareness** through social media.
idiom

blow out of the water

Meaning
to surprise or defeat completely
Example
Their performance **blew us out of the water**.
idiom

Baptism of fire

Meaning
A person’s first difficult experience in a new job or role.
Example
Her first week as manager was a real **baptism of fire**.
idiom

Bootstrap the business

Meaning
To build a company using only personal finances.
Example
They decided to **bootstrap the business** instead of seeking investors.
idiom

butterflies in my stomach

Meaning
feeling nervous or anxious
Example
I had **butterflies in my stomach** before the interview.
idiom

bite someone’s head off

Meaning
to speak angrily to someone without reason
Example
I just asked a question, no need to **bite my head off**!
idiom

bloom where you’re planted

Meaning
make the best of your current situation
Example
Even in tough times, she **blooms where she’s planted**.
idiom

by the skin of one’s teeth

Meaning
To narrowly escape or achieve something by a very small margin.
Example
I passed the exam **by the skin of my teeth**.
idiom

burn your fingers

Meaning
to suffer because of a bad decision or mistake
Example
He **burned his fingers** by trusting the wrong person.
idiom

bust someone

Meaning
to arrest or catch someone doing something illegal
Example
The officer was able to **bust someone** for selling drugs.
idiom

brainstorm an idea

Meaning
to discuss and think creatively to generate new ideas
Example
The teacher asked the class to **brainstorm ideas** for the project.
idiom

bite the byte

Meaning
to deal with a difficult technological challenge
Example
Developers had to **bite the byte** to fix the software issue.
idiom

big picture

Meaning
the overall perspective or situation
Example
Producers always try to see the **big picture** before making changes.
idiom

Burn the bridges

Meaning
to destroy the possibility of returning to a previous situation
Example
Once he left the company, he decided to **burn the bridges** and not look back.
idiom

burst out laughing

Meaning
to suddenly start laughing loudly
Example
Everyone **burst out laughing** at his joke.
idiom

bored to death

Meaning
extremely bored
Example
I was **bored to death** during the long lecture.
idiom

Bring peace to

Meaning
To restore calm or tranquility in a situation.
Example
Her kind words helped **bring peace to** the argument.
idiom

blood, sweat, and tears

Meaning
great effort and hard work
Example
Building this company took a lot of **blood, sweat, and tears**.
idiom

bail on

Meaning
to abandon someone or something suddenly
Example
He wouldn’t **bail on** his friends at the last minute.
idiom

breakthrough

Meaning
a significant or sudden development or discovery; an important achievement
Example
The scientist made a major **breakthrough** in his research on cancer treatment.
idiom

barefaced lie

Meaning
a bold and shameless lie
Example
His excuse was a **barefaced lie**.
idiom

bend someone’s ear

Meaning
to talk to someone for a long time, usually to complain
Example
He **bent my ear** about his terrible day at work.
idiom

build brand loyalty

Meaning
to create long-term trust and attachment to a brand
Example
Consistent quality helps **build brand loyalty** among customers.
idiom

break up

Meaning
to end a romantic relationship
Example
They decided to **break up** after five years together.
idiom

blow away

Meaning
to impress or surprise someone very much
Example
Her singing **blew me away**.
idiom

back to square one

Meaning
to start over again
Example
After the computer crashed, I had to go **back to square one** with my report.
idiom

build from scratch

Meaning
to start something from the very beginning
Example
They **built the company from scratch** with no outside funding.
idiom

Born in the barn

Meaning
To have bad manners or lack social etiquette.
Example
Close the door! Were you **born in the barn**?
idiom

bring up

Meaning
to raise or care for a child until adulthood
Example
She was **brought up** by her grandparents.
idiom

break into a cold sweat

Meaning
to start sweating due to fear or anxiety
Example
He **broke into a cold sweat** before giving his speech.
idiom

black box problem

Meaning
a situation where the internal workings of an AI system are not transparent or understood
Example
The biggest challenge in deep learning is the **black box problem**.
idiom

buckle under the strain

Meaning
to give in to stress or pressure
Example
She refused to **buckle under the strain** and kept going.
idiom

black sheep

Meaning
a person who is considered a disgrace to a group or family
Example
He is the **black sheep** of the family.
idiom

black sheep of the family

Meaning
a family member who is considered a disgrace
Example
He became the **black sheep of the family** after his bad decisions.
idiom

break the fourth wall

Meaning
to address the audience directly in a play or film
Example
The actor **broke the fourth wall** to make the scene funnier.
idiom

Band together

Meaning
To unite for a common purpose.
Example
The workers **banded together** to demand better wages.
idiom

born in the purple

Meaning
born into a wealthy or royal family
Example
He was **born in the purple**, so wealth was never an issue.
idiom

back up

Meaning
to support or to make a copy of important data
Example
Can you **back up** my explanation during the meeting?
idiom

build one's confidence

Meaning
to increase one's self-assurance or belief in one's abilities
Example
Public speaking classes helped him **build his confidence**.
idiom

Barking up the wrong tree

Meaning
To pursue a mistaken or misguided course of action.
Example
If you think I'm guilty, you're **barking up the wrong tree**.
idiom

burning desire

Meaning
a strong motivation to achieve something
Example
He has a **burning desire** to succeed in life.
idiom

blow someone's cover

Meaning
to reveal someone's secret identity or hidden purpose
Example
The journalist accidentally **blew the cover** of the undercover agent.
idiom

be on edge

Meaning
to be nervous, tense, or easily upset
Example
She’s been **on edge** all day waiting for the results.
idiom

back on track

Meaning
to return to the right path or plan
Example
After some delays, our trip is **back on track**.
idiom

break into a market

Meaning
to successfully enter a new market or industry
Example
The company is trying to **break into the Asian market**.
idiom

back off

Meaning
to move away or stop pressuring someone
Example
Let’s **back off** and give them space to decide.
idiom

believe you’re good enough

Meaning
to accept that you are capable and worthy
Example
To overcome fear, you must **believe you’re good enough**.
idiom

burn a hole in one's pocket

Meaning
to spend money quickly or irresponsibly
Example
After receiving his bonus, he couldn't resist and **burned a hole in his pocket** by buying a new car.
idiom

broken-hearted

Meaning
extremely sad about something or someone
Example
He was **broken-hearted** after the breakup.
idiom

bite off more than you can chew

Meaning
to take on a task that is too big to handle
Example
I think I **bit off more than I can chew** by agreeing to manage three projects at once.
idiom

blow off steam

Meaning
to express anger or frustration so that you feel better
Example
He went for a run to **blow off steam** after the argument.
idiom

bursting with joy

Meaning
full of happiness and excitement
Example
The children were **bursting with joy** on Christmas morning.
idiom

brainchild of

Meaning
an idea or invention created by someone
Example
ChatGPT is the **brainchild of** OpenAI researchers.
idiom

break the silence

Meaning
to start talking after a period of silence
Example
He was the one to **break the silence** after the awkward pause.
idiom

behind the times

Meaning
old-fashioned or not keeping up with modern ideas
Example
My uncle still uses a typewriter—he’s **behind the times**.
idiom

butterflies in one's stomach

Meaning
feeling nervous or anxious
Example
I had **butterflies in my stomach** before the interview.