an open book
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idiom

an open book

Meaning
someone who is easy to understand or very honest
Example
He’s **an open book**; you can always tell what he’s thinking.
idiom

a universe of possibilities

Meaning
endless opportunities or options
Example
Technology has opened **a universe of possibilities**.
idiom

An ear to the ground

Meaning
To be aware of what is happening around you.
Example
If you want to succeed in business, always keep **an ear to the ground**.
idiom

a glimpse into the future

Meaning
a small indication of what the future might be like
Example
This technology gives us **a glimpse into the future**.
idiom

artificial brainpower

Meaning
intelligence or decision-making provided by AI systems
Example
The car relies on **artificial brainpower** to navigate through traffic.
idiom

at peace with oneself

Meaning
feeling calm and accepting of oneself
Example
She felt **at peace with herself** after making the decision.
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

age before beauty

Meaning
used humorously to let an older person go first
Example
He opened the door and said, '**Age before beauty**,' letting his grandmother enter first.
idiom

Air time

Meaning
The amount of time something is broadcast on TV or radio
Example
The charity event got a lot of **air time** on local stations.
idiom

a quantum leap

Meaning
a big and sudden improvement
Example
This discovery is **a quantum leap** in medical research.
idiom

a brave face

Meaning
to pretend to be brave when you are actually scared or worried
Example
She put on **a brave face** despite feeling nervous inside.
idiom

a paradigm shift

Meaning
a fundamental change in approach or underlying assumptions
Example
The invention of the internet marked a **paradigm shift** in communication and information sharing.
idiom

at the top of one’s game

Meaning
to be performing at one’s best level
Example
The athlete is **at the top of his game** this season.
idiom

a lump in your throat

Meaning
feeling emotional or about to cry
Example
He felt **a lump in his throat** when he said goodbye.
idiom

A nest egg

Meaning
A sum of money saved for the future or retirement.
Example
He built up a **nest egg** for his children's education.
idiom

a wake-up call

Meaning
an event that makes someone realize they need to change
Example
Losing his job was a **wake-up call** for him.
idiom

a tough act to follow

Meaning
something so impressive that others find it hard to match or surpass
Example
His last performance was **a tough act to follow**.
idiom

a heart of steel

Meaning
someone who is emotionally strong and unyielding
Example
Despite all the challenges, he handled everything with **a heart of steel**.
idiom

A pack of lies

Meaning
A complete set of false statements.
Example
His excuse was nothing but **a pack of lies**.
idiom

artificial instinct

Meaning
a machine’s ability to make decisions that seem natural or human-like
Example
The new model shows a kind of **artificial instinct** while driving.
idiom

acid test

Meaning
a crucial test that proves the value or success of something
Example
The product launch will be the **acid test** of our new design.
idiom

a tough decision to make

Meaning
a decision that is difficult to make because of the potential consequences
Example
Choosing between two job offers was **a tough decision to make**.
idiom

a bridge too far

Meaning
an attempt or goal that is too ambitious or impossible to achieve
Example
The proposal to negotiate with all the countries at once was **a bridge too far**.
idiom

At the forefront

Meaning
being in a leading or important position in a field
Example
The research center is **at the forefront** of renewable energy studies.
idiom

A Scrooge

Meaning
A very stingy or miserly person.
Example
Don’t be **a Scrooge**—it’s Christmas!
idiom

actions speak louder than words

Meaning
what people do is more important than what they say
Example
**Actions speak louder than words**, so prove it with effort.
idiom

a leopard can't change its spots

Meaning
someone cannot change their inherent nature or characteristics
Example
No matter how hard he tries, **a leopard can't change its spots**.
idiom

A tough row to hoe

Meaning
A difficult task or situation to handle.
Example
Starting a new business is **a tough row to hoe**.
idiom

a closed book

Meaning
something or someone that is difficult to understand
Example
He’s **a closed book** when it comes to his personal life.
idiom

a whole new ball game

Meaning
a completely new or different situation; something that changes the way things are done.
Example
Starting a business from scratch is **a whole new ball game**.
idiom

An old friend is better than two new ones

Meaning
Long-time friends are more valuable than new ones.
Example
I trust John more than anyone else—**an old friend is better than two new ones**.
idiom

a picture is worth a thousand words

Meaning
a visual image can express complex ideas better than words
Example
That photo truly proves that **a picture is worth a thousand words**.
idiom

a snake in the grass

Meaning
a secret enemy
Example
Be careful; there’s **a snake in the grass**.
idiom

as wise as an owl

Meaning
very wise or knowledgeable
Example
My grandfather is **as wise as an owl**.
idiom

At the end of one’s rope

Meaning
To be so tired or frustrated that you can’t deal with anything more.
Example
After working nonstop for weeks, I was **at the end of my rope**.
idiom

a long shot

Meaning
something that has a very small chance of success
Example
Winning the competition is **a long shot**, but we’ll try.
idiom

a work of art

Meaning
something very beautiful or skillfully made
Example
Her wedding dress was truly **a work of art**.
idiom

adapt to change

Meaning
to adjust to new circumstances or environments
Example
In order to succeed, you must learn to **adapt to change**.
idiom

above the law

Meaning
not subject to the law; thinking one is untouchable by rules
Example
Some powerful people act as if they are **above the law**.
idiom

a diplomatic tightrope

Meaning
a very delicate or risky diplomatic situation
Example
Managing relations with both rivals is a **diplomatic tightrope**.
idiom

a sound bite

Meaning
a short, memorable part of a speech or interview often used in the media
Example
The politician's **sound bite** was replayed on every major news channel.
idiom

at a crossroads

Meaning
at a point where a decision must be made
Example
After years of travel, she found herself **at a crossroads** in life.
idiom

A Jekyll and Hyde

Meaning
A person with two very different sides to their personality.
Example
He’s like **a Jekyll and Hyde**—nice one moment and cruel the next.
idiom

agree to disagree

Meaning
to accept that you have different opinions and stop arguing
Example
We’ll just **agree to disagree** on this topic.
idiom

a man of vision

Meaning
a person who has foresight and imagination
Example
He is **a man of vision** who transformed the company.
idiom

Ask a million questions

Meaning
To be extremely curious and ask many questions.
Example
Kids often **ask a million questions** about everything.
idiom

alien concept

Meaning
something unfamiliar or strange
Example
Honesty seems like an **alien concept** to him.
idiom

a slip of the tongue

Meaning
a spoken mistake; saying something unintentionally
Example
It was just **a slip of the tongue**, I didn’t mean to offend you.
idiom

As green as grass

Meaning
Very inexperienced or new at something.
Example
He’s **as green as grass** in his new job.
idiom

A blueprint for success

Meaning
A detailed plan or strategy for achieving success.
Example
Hard work and consistency are **a blueprint for success**.
idiom

at the crossroads

Meaning
facing a decision or choice
Example
I’m **at the crossroads** in my career right now.
idiom

a ray of hope

Meaning
a small sign of possible success or improvement
Example
The new treatment gave patients **a ray of hope**.
idiom

a lightbulb moment

Meaning
a sudden realization or understanding
Example
When I saw the results, I had a **lightbulb moment**.
idiom

a quick study

Meaning
someone who learns new things very fast
Example
She’s **a quick study** and mastered the topic in a day.
idiom

afraid of your own shadow

Meaning
to be easily frightened
Example
He’s so timid; he’s **afraid of his own shadow**.
idiom

a slap on the wrist

Meaning
a very mild punishment
Example
He got **a slap on the wrist** for such a serious offense.
idiom

a fair trial

Meaning
a trial where all sides are treated equally and justly
Example
The defendant demanded **a fair trial** to prove his innocence.
idiom

act the part

Meaning
to behave in a way that fits a particular role or situation
Example
If you want to be treated like a leader, you need to **act the part**.
idiom

a dark horse

Meaning
a person who keeps their skills or plans secret until an important moment
Example
Nobody expected her to win; she was **a dark horse**.
idiom

a shoulder to cry on

Meaning
someone who listens and supports you when you are sad
Example
She has always been **a shoulder to cry on** when I needed help.
idiom

all smiles

Meaning
very happy and cheerful
Example
He was **all smiles** after hearing the compliment.
idiom

a blessing in disguise

Meaning
something that seems bad but results in something good
Example
Losing that job was **a blessing in disguise**.
idiom

A blurred line

Meaning
An unclear distinction between two things
Example
There’s often **a blurred line** between work and personal life.
idiom

a penny for your thoughts

Meaning
a way of asking someone what they are thinking about
Example
You look lost in thought — **a penny for your thoughts**?
idiom

a peaceful resolution

Meaning
a solution that resolves a conflict calmly
Example
They reached **a peaceful resolution** after several discussions.
idiom

Ask the right questions

Meaning
To inquire wisely to gain understanding.
Example
Good researchers always **ask the right questions**.
idiom

at your breaking point

Meaning
to be very close to losing control due to stress
Example
After months of overwork, she was **at her breaking point**.
idiom

a million-dollar smile

Meaning
a beautiful and charming smile
Example
She greeted everyone with **a million-dollar smile**.
idiom

answer for something

Meaning
to be responsible for something bad that happens
Example
You’ll have to **answer for your actions** if things go wrong.
idiom

act on

Meaning
to respond to information with action
Example
We need to **act on** the survey results immediately.
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

add fuel to the fire

Meaning
to make a bad situation worse
Example
Your comments **added fuel to the fire**.
idiom

a piece of the puzzle

Meaning
a small part of a larger situation or problem
Example
Finding the right team is just **a piece of the puzzle** in creating a successful business.
idiom

a slippery slope

Meaning
a course of action that seems to lead to undesirable or dangerous consequences
Example
Starting to ignore small violations can lead to **a slippery slope** of bigger legal issues.
idiom

a little bird told me

Meaning
someone told me something secretly
Example
A **little bird told me** that you got a new job.
idiom

add insult to injury

Meaning
to make a bad situation even worse
Example
First, they lost the game, and then, to **add insult to injury**, their bus broke down.
idiom

air gap

Meaning
a physical separation between secure and insecure systems
Example
Critical networks are kept **air-gapped** to prevent unauthorized access.
idiom

A negative outlook

Meaning
A pessimistic attitude or perspective
Example
He always has **a negative outlook** on life.
idiom

A hit piece

Meaning
A story or article intended to damage someone's reputation, often in a biased or unfair way.
Example
The editor criticized the paper for publishing such a **hit piece** on the politician.
idiom

a blank slate

Meaning
a person with no prior knowledge or experience
Example
He came to the school like a **blank slate**.
idiom

a bug in the system

Meaning
a problem or error in a program or system
Example
There seems to be **a bug in the system** causing slow performance.
idiom

a turning point

Meaning
a moment when an important change happens
Example
Graduating from college was a **turning point** in his life.
idiom

a trip down memory lane

Meaning
to remember pleasant events from the past
Example
Looking through old photos was **a trip down memory lane**.
idiom

AI accountability

Meaning
the responsibility of developers and organizations to ensure AI systems act fairly, safely, and ethically.
Example
Ensuring **AI accountability** is essential to avoid harmful consequences in society.
idiom

a miscarriage of justice

Meaning
a wrong or unfair decision by a court
Example
The innocent man’s imprisonment was **a miscarriage of justice**.
idiom

as fresh as a daisy

Meaning
full of energy and not tired
Example
Even after the hike, she looked **as fresh as a daisy**.
idiom

adapt to the changing times

Meaning
to adjust to new conditions or circumstances
Example
In order to survive in this fast-paced world, you must **adapt to the changing times**.
idiom

a pipe dream

Meaning
an unrealistic or impossible dream
Example
Owning a private island is just **a pipe dream** for most people.
idiom

a workaholic

Meaning
a person who works too much and finds it hard to stop
Example
He’s such **a workaholic**, even on weekends he works.
idiom

a man with a mission

Meaning
a person with strong purpose and determination to achieve something
Example
He’s **a man with a mission** to change the way we think about education.
idiom

a smart cookie

Meaning
a very clever or intelligent person
Example
Don’t underestimate her; she’s **a smart cookie**.
idiom

a shoulder to lean on

Meaning
someone to give you support and comfort
Example
She’s always been **a shoulder to lean on** for me.
idiom

a dream come true

Meaning
something that happens which you always wished for
Example
Getting that scholarship was **a dream come true** for her.
idiom

a no-brainer

Meaning
something that is very easy to understand or decide
Example
The solution to the problem was **a no-brainer**.
idiom

a chatterbox

Meaning
someone who talks a lot, especially a child
Example
My little sister is **a chatterbox**; she never stops talking.
idiom

ahead of time

Meaning
before the expected or planned time
Example
She finished her work **ahead of time**.
idiom

a ray of sunshine

Meaning
someone or something that brings happiness
Example
Her smile is **a ray of sunshine** on a gloomy day.
idiom

a glimmer of hope

Meaning
a small sign of improvement or success in a difficult situation
Example
Even in the hardest times, he never gave up because there was always **a glimmer of hope**.
idiom

after the rain comes the rainbow

Meaning
good times follow bad times
Example
Don’t lose faith; **after the rain comes the rainbow**.
idiom

as luck would have it

Meaning
by chance; fortunately or unfortunately
Example
**As luck would have it**, I met my old friend at the airport.
idiom

a crash course

Meaning
a short and intensive course of study
Example
I had to take a **crash course** in programming before starting the job.
idiom

As cool as a cucumber

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

At your own risk

Meaning
You are responsible for any possible danger or loss.
Example
You can enter the cave, but it’s **at your own risk**.
idiom

a lawyer's brief

Meaning
a summary or concise statement of an argument or case
Example
The **lawyer's brief** was submitted to the judge before the trial began.
idiom

A Romeo

Meaning
A passionate lover or a romantic man.
Example
He acts like **a Romeo** around her.
idiom

a blank canvas

Meaning
a person or situation that can be developed freely
Example
Starting a new project is like working with **a blank canvas**.
idiom

a match made in heaven

Meaning
a perfect couple, very well suited for each other
Example
They are truly **a match made in heaven**.
idiom

A Catch-22

Meaning
A dilemma or difficult situation from which there is no escape because of mutually conflicting conditions.
Example
It’s a **Catch-22**—you can’t get a job without experience, but you can’t get experience without a job.
idiom

a taste of your own medicine

Meaning
to experience the same unpleasantness you caused to others
Example
He was rude to everyone, but now he’s getting **a taste of his own medicine**.
idiom

a penny saved is a penny earned

Meaning
saving money is just as valuable as earning it
Example
My grandfather always said, '**a penny saved is a penny earned**.'
idiom

Above reproach

Meaning
Completely honest and without fault.
Example
Her integrity is **above reproach**.
idiom

a cold fish

Meaning
someone who is unemotional or not friendly
Example
He seemed **a cold fish** when I first met him.
idiom

ask around

Meaning
to inquire with several people
Example
I’ll **ask around** to see who can cover the shift.
idiom

a snowball effect

Meaning
a situation in which something increases in size or importance at a faster and faster rate
Example
The more followers she got, the more famous she became, creating **a snowball effect**.
idiom

a tough call

Meaning
a difficult decision to make
Example
Choosing between the two offers was **a tough call**.
idiom

a clear conscience

Meaning
a state of being free from guilt or regret
Example
She could sleep soundly at night because she had **a clear conscience**.
idiom

a kind heart

Meaning
a person who is generous and caring
Example
Her **kind heart** is what makes her loved by everyone.
idiom

A snapshot of

Meaning
A brief look or summary of something
Example
The report gives **a snapshot of** our company's performance.
idiom

AI arms race

Meaning
competition among companies or nations to lead in AI development
Example
Big tech companies are engaged in an **AI arms race**.
idiom

a global village

Meaning
the world considered as a single community due to technology and communication
Example
The internet has turned the world into **a global village**.
idiom

A nervous wreck

Meaning
Someone who is very worried or upset.
Example
He’s **a nervous wreck** before every exam.