black box problem
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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

music to one’s ears

Meaning
something that makes someone feel very happy or pleased
Example
The news of his promotion was **music to his ears**.
idiom

show your true colors

Meaning
to reveal your real character or intentions
Example
He finally **showed his true colors** when he refused to help his friend in need.
idiom

climb the ladder

Meaning
to move up in position or success, especially in a career
Example
He worked hard to **climb the ladder** in his company.
idiom

iron curtain

Meaning
a barrier separating nations ideologically or politically
Example
During the Cold War, Europe was divided by the **iron curtain**.
idiom

chew someone out

Meaning
to angrily scold or criticize someone
Example
The coach **chewed out** the team for their poor performance.
idiom

nudge into

Meaning
to gently encourage someone toward something
Example
They **nudged her into** presenting at the meetup.
idiom

kick in

Meaning
to begin to take effect
Example
The backup generator should **kick in** within seconds.
idiom

To toe the line

Meaning
To follow rules or policies strictly, often without questioning
Example
The senator was expected to **toe the line** and support the party’s stance.
idiom

keep an eye on

Meaning
to watch or monitor something or someone carefully
Example
Can you **keep an eye on** the kids while I'm cooking?
idiom

double check with

Meaning
to confirm information with someone
Example
Could you **double check with** finance about the budget?
idiom

Nest feathering

Meaning
Using one’s position or power for personal financial gain.
Example
The politician was accused of **nest feathering**.
idiom

fall short

Meaning
to fail to meet expectations or standards
Example
His efforts **fell short** of what was needed to win the competition.
idiom

flesh out

Meaning
to add more detail to something
Example
We need to **flesh out** the proposal before presenting it.
idiom

the blind leading the blind

Meaning
someone inexperienced leading others who also lack experience
Example
The new trainees teaching each other is like **the blind leading the blind**.
idiom

All hands on deck

Meaning
Everyone must work together or help with a task.
Example
We need **all hands on deck** to finish this project by tomorrow.
idiom

wired for success

Meaning
naturally inclined or designed to succeed
Example
The new AI model seems **wired for success** in every test.
idiom

knock it out of the park

Meaning
to do something extremely well or successfully
Example
Her presentation **knocked it out of the park**.
idiom

Don’t be discouraged

Meaning
Stay motivated even after setbacks.
Example
**Don’t be discouraged**—success takes time.
idiom

change of scene

Meaning
a new environment or situation
Example
After months of work, I needed a **change of scene**.
idiom

lay it on thick

Meaning
to exaggerate praise or flattery
Example
She really **laid it on thick** when complimenting her boss.
idiom

throw under the bus

Meaning
to blame someone else to save yourself.
Example
He **threw his colleague under the bus** to avoid punishment.
idiom

Don't cry over spilled milk

Meaning
Don’t waste time worrying about things that have already happened.
Example
**Don't cry over spilled milk**; learn from your mistake.
idiom

butterflies in one's stomach

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

grow on someone

Meaning
to become more liked or appreciated over time
Example
At first I didn’t like the song, but it **grew on me**.
idiom

Know the drill

Meaning
To be familiar with a routine or procedure.
Example
Everyone here **knows the drill** during an emergency.
idiom

on solid ground

Meaning
in a safe or stable situation
Example
After months of hard work, the company is now **on solid ground**.
idiom

hit the town

Meaning
to go out and enjoy with friends
Example
Let’s **hit the town** tonight and celebrate!
idiom

cross off

Meaning
to remove an item from a list
Example
You can **cross off** the tasks we’ve finished.
idiom

keep your eyes on the prize

Meaning
to stay focused on your goal despite difficulties
Example
Even during tough times, she **kept her eyes on the prize**.
idiom

make peace with

Meaning
to end conflict and become friendly again
Example
She finally **made peace with** her sister after years of misunderstanding.
idiom

on the radar

Meaning
something that is being monitored or considered
Example
The new scientific theory is now **on the radar** of researchers across the world.
idiom

the rest is history

Meaning
used to say that everyone knows what happened next
Example
They met in college, fell in love, and **the rest is history**.
idiom

bat around

Meaning
to discuss ideas casually
Example
We spent the afternoon **batting around** marketing themes.
idiom

throw caution to the wind

Meaning
to do something risky without worrying
Example
I decided to **throw caution to the wind** and try it.
idiom

cloak and dagger

Meaning
involving secrecy, mystery, and deception
Example
The meeting was surrounded by **cloak and dagger** secrecy.
idiom

check up on

Meaning
to verify that someone or something is doing well
Example
I’ll **check up on** the interns after the training session.
idiom

hit the roof

Meaning
to become very angry
Example
Dad will **hit the roof** when he sees the broken window.
idiom

keep one's nose to the grindstone

Meaning
to work hard and continuously
Example
If you **keep your nose to the grindstone**, you'll achieve your goals.
idiom

digital twin

Meaning
a virtual representation of a physical object or system used for simulation and analysis
Example
Using **digital twin** technology, we can simulate the performance of machinery before production.
idiom

pull yourself together

Meaning
to regain control of your emotions or behavior
Example
Stop crying and **pull yourself together** – we need to find a solution.
idiom

frame of mind

Meaning
a person's mood or mental state
Example
He’s not in the right **frame of mind** to make decisions.
idiom

weigh in on

Meaning
to share an opinion about a topic
Example
The moderator asked experts to **weigh in on** the policy changes.
idiom

carve up

Meaning
to divide something into parts
Example
Let’s **carve up** the timeline into manageable phases.
idiom

plant the seed

Meaning
to introduce an idea subtly to influence someone later
Example
He **planted the seed** for the project during the discussion.
idiom

to the letter

Meaning
exactly as instructed
Example
She followed her teacher’s advice **to the letter**.
idiom

smooth things over

Meaning
to make a bad situation seem better by dealing with it calmly
Example
She tried to **smooth things over** after their disagreement.
idiom

filter out

Meaning
to remove unwanted parts from something
Example
Use this tool to **filter out** spam messages.
idiom

loose cannon

Meaning
an unpredictable person who may cause problems
Example
He’s a **loose cannon** who often says things without thinking.
idiom

all in the same boat

Meaning
in the same situation or facing the same challenges
Example
We're all **in the same boat**, so let's work together to solve this problem.
idiom

if you ask me

Meaning
used when giving a personal opinion, often without being asked
Example
**If you ask me**, they made a bad decision.
idiom

source close to the matter

Meaning
an unidentified but informed source
Example
A **source close to the matter** confirmed the rumor.
idiom

bright-eyed and bushy-tailed

Meaning
alert and full of energy, especially in the morning
Example
He came to work **bright-eyed and bushy-tailed** after the weekend.
idiom

have a splitting headache

Meaning
to have a very bad headache
Example
I can’t focus right now; I **have a splitting headache**.
idiom

when pigs fly

Meaning
something that will never happen
Example
He'll clean his room **when pigs fly**.
idiom

keep the fire burning

Meaning
to stay motivated and passionate about something
Example
Even after failure, he managed to **keep the fire burning**.
idiom

work around

Meaning
to find a practical solution that avoids a problem
Example
We can **work around** the delay by using a backup supplier.
idiom

speak your mind

Meaning
to say exactly what you think
Example
Don't be afraid to **speak your mind**.
idiom

AI-powered

Meaning
referring to systems or applications that use artificial intelligence to function
Example
The company launched an **AI-powered** assistant to help customers find products more easily.
idiom

eat your heart out

Meaning
to suffer silently from jealousy or longing
Example
He’s been **eating his heart out** since his ex got engaged.
idiom

have butterflies in your stomach

Meaning
to feel very nervous about something
Example
She always **has butterflies in her stomach** before exams.
idiom

artificial intelligence

Meaning
The simulation of human intelligence in machines that are programmed to think and learn.
Example
The company has invested heavily in **artificial intelligence** to enhance automation.
idiom

march to the beat of your own drum

Meaning
to act independently and follow your own ideas
Example
She doesn’t care about trends; she **marches to the beat of her own drum**.
idiom

Exactly!

Meaning
Used to strongly show agreement
Example
‘It’s time to move on.’ ‘**Exactly!**’
idiom

open and shut case

Meaning
a case that is easily decided or obvious
Example
It was an **open and shut case** with clear evidence.
idiom

do the right thing

Meaning
to act in a morally or socially responsible way
Example
Even when it’s hard, always **do the right thing**.
idiom

set in stone

Meaning
fixed and not likely to change
Example
Our schedule isn’t **set in stone** yet.
idiom

the lion’s share

Meaning
the largest part of something
Example
He took **the lion’s share** of the profits.
idiom

a learning curve

Meaning
the process of learning something new, especially one that requires time and effort
Example
There was a steep **learning curve** when I first started the project.
idiom

the pen is mightier than the sword

Meaning
words and communication have more power than violence
Example
He believes **the pen is mightier than the sword**, so he fights with ideas, not weapons.
idiom

eat humble pie

Meaning
to admit your mistake and apologize
Example
After blaming her friend, she had to **eat humble pie** when she realized she was wrong.
idiom

hold over

Meaning
to postpone something to a later time
Example
They had to **hold over** the vote until next week.
idiom

on the gravy train

Meaning
to be in a situation where one makes a lot of money with little effort
Example
He’s been riding **on the gravy train** since he took over the family business.
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

switch over

Meaning
to change from one system or option to another
Example
The team will **switch over** to the new software tonight.
idiom

ride the wave

Meaning
to take advantage of a trend or situation
Example
Many companies are trying to **ride the wave** of AI technology.
idiom

hear someone out

Meaning
to listen to someone until they have finished speaking
Example
Please **hear me out** before you make a decision.
idiom

clash of civilizations

Meaning
the conflict between different cultural, religious, or civilizational groups
Example
The debate about cultural differences is often seen as a **clash of civilizations**.
idiom

to drop the ball

Meaning
to make a mistake; to fail at something important
Example
He really **dropped the ball** by forgetting the meeting.
idiom

lose one's temper

Meaning
to become very angry
Example
He **lost his temper** when he saw the mess.
idiom

cool as a cucumber

Meaning
very calm and composed
Example
He stayed **cool as a cucumber** during the meeting.
idiom

hear something through the grapevine

Meaning
to hear news or rumors indirectly
Example
I **heard through the grapevine** that they are getting married.
idiom

to kill two birds with one stone

Meaning
to achieve two things at once
Example
I can **kill two birds with one stone** by listening to a podcast while I exercise.
idiom

to bite off more than you can chew

Meaning
to take on a task that is too difficult
Example
He **bit off more than he could chew** by promising to finish the work alone.
idiom

draw up

Meaning
to prepare an official document or plan
Example
The lawyer will **draw up** the agreement this afternoon.
idiom

starry-eyed

Meaning
having naive or unrealistic dreams or hopes
Example
He was **starry-eyed** about becoming a famous singer.
idiom

internet troll

Meaning
a person who deliberately posts offensive or provocative comments online
Example
Don’t feed the **internet trolls** by replying to their comments.
idiom

Speak the truth and shame the devil

Meaning
Speak the truth even if it may cause trouble or discomfort.
Example
She always believes that **speak the truth and shame the devil** is the right way.
idiom

on edge

Meaning
to be nervous, tense, or irritable
Example
She’s been **on edge** since the exam started.
idiom

get under someone's skin

Meaning
to annoy or bother someone deeply
Example
She really knows how to **get under my skin**.
idiom

step up one’s game

Meaning
to improve one’s effort or performance
Example
If you want that promotion, you need to **step up your game**.
idiom

the art of war

Meaning
strategies or tactics for achieving success in difficult situations
Example
The general studied **the art of war** to prepare for the upcoming battle.
idiom

the long arm of the law

Meaning
the power and reach of the law to catch criminals
Example
**The long arm of the law** finally caught the escaped prisoner.
idiom

boot up

Meaning
to start a computer or system
Example
My laptop takes forever to **boot up**.
idiom

blow a fuse

Meaning
to suddenly become very angry or lose control
Example
He **blew a fuse** when he saw the mess.
idiom

under oath

Meaning
having sworn to tell the truth in court
Example
He lied **under oath** and was charged with perjury.
idiom

go above and beyond

Meaning
to do more than what is required
Example
She **went above and beyond** to complete the project ahead of schedule.
idiom

As cool as a cucumber

Meaning
Very calm and relaxed.
Example
Even in stressful situations, she stays **as cool as a cucumber**.
idiom

fine-tune

Meaning
to make small adjustments to improve performance
Example
The team **fine-tuned** the design before the final launch.
idiom

The sun is shining

Meaning
A metaphor for happiness or positivity, often used when things are going well.
Example
After all the hard work, things finally seemed to be **shining**.
idiom

a roof over your head

Meaning
a place to live; a shelter
Example
At least we have **a roof over our heads**.
idiom

sour grapes

Meaning
pretending to dislike something you can’t have
Example
His comments about the award being unfair are just **sour grapes**.
idiom

The greater good

Meaning
The idea that actions should be judged based on how much they contribute to the overall well-being of society, rather than individual interests.
Example
In times of crisis, leaders must always think about **the greater good** before making decisions.
idiom

stick together

Meaning
to stay close and support each other
Example
In tough times, good friends **stick together**.
idiom

in the limelight

Meaning
to be the focus of public attention
Example
After winning the award, he was **in the limelight** for months.
idiom

be sure of yourself

Meaning
to have confidence in your abilities or opinions
Example
To be a leader, you must **be sure of yourself**.
idiom

a silver bullet

Meaning
a simple solution to a complex problem
Example
There is no **silver bullet** for solving climate change, but we need to take action.
idiom

mentor someone

Meaning
to guide or advise someone, typically in a professional context
Example
She has been asked to **mentor** the new recruits in the company.
idiom

mend fences

Meaning
to repair a damaged relationship
Example
She called her friend to **mend fences** after their disagreement.
idiom

Cover a lot of ground

Meaning
to deal with a lot of information or material
Example
The lecture **covered a lot of ground** in just one hour.
idiom

a breakthrough

Meaning
a significant discovery or achievement in science or research
Example
The team made **a breakthrough** in cancer research.
idiom

have a crush on someone

Meaning
to have romantic feelings for someone, often secretly
Example
I’ve **had a crush on** her for months.
idiom

fish for

Meaning
to try to get something such as information or praise
Example
He keeps **fishing for** compliments about his report.
idiom

bring to the table

Meaning
to contribute something useful or valuable
Example
Each team member **brings something unique to the table**.
idiom

Eureka moment

Meaning
a sudden moment of discovery or realization
Example
She had a **Eureka moment** when she found the solution to the problem.
idiom

fall flat

Meaning
to fail completely
Example
His idea **fell flat** because nobody liked it.
idiom

hold your nerve

Meaning
to remain calm and confident under pressure
Example
She **held her nerve** and finished the speech perfectly.
idiom

penny wise, pound foolish

Meaning
being careful with small amounts of money but careless with large amounts
Example
She refuses to buy a $10 book, but spends $100 on clothes; she's **penny wise, pound foolish**.
idiom

a burning desire

Meaning
a strong and intense wish to achieve something
Example
She has **a burning desire** to become the best in her field.
idiom

carry a torch for someone

Meaning
to continue loving someone who doesn’t love you back
Example
He’s still **carrying a torch for** his ex-girlfriend.
idiom

ease off

Meaning
to gradually become less strong or intense
Example
The rain should **ease off** by evening.