overfitting
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idiom

overfitting

Meaning
when a model performs well on training data but poorly on unseen data
Example
The model seems to be **overfitting** because it performs well on the training data but poorly on the test set.
idiom

take things to the next level

Meaning
to improve or develop something beyond its current state
Example
We plan to **take our innovation to the next level** this year.
idiom

keep your word

Meaning
to honor a promise or commitment
Example
You must always **keep your word** if you want to gain trust.
idiom

steam coming out of your ears

Meaning
to look or feel extremely angry
Example
He had **steam coming out of his ears** after the argument.
idiom

social media blackout

Meaning
a period when social media services are unavailable or intentionally avoided
Example
During the **social media blackout**, everyone started reading books again.
idiom

zero-day exploit

Meaning
a cyberattack that occurs before a vulnerability is patched
Example
Hackers launched a **zero-day exploit** targeting the system’s core files.
idiom

get the hang of it

Meaning
to learn or become skilled at something new
Example
Don’t worry, you’ll **get the hang of it** soon.
idiom

Put your trust in someone

Meaning
To believe in someone's honesty or ability
Example
I chose to **put my trust in her**, and she didn't disappoint me.
idiom

draw the line

Meaning
to set a limit on what is acceptable
Example
We have to **draw the line** when it comes to unethical behavior.
idiom

the bottom has fallen out

Meaning
a situation in which something has suddenly failed or collapsed
Example
The market for tech stocks has crashed; the **bottom has fallen out**.
idiom

count to ten

Meaning
to pause and calm down before reacting in anger
Example
When you’re upset, just **count to ten** before speaking.
idiom

Put up walls

Meaning
To create emotional barriers or distance from others.
Example
After the breakup, she **put up walls** and stopped trusting people.
idiom

carve your own path

Meaning
to create your own way of achieving success or independence
Example
She decided to **carve her own path** instead of joining her family business.
idiom

upload your thoughts

Meaning
to express or share one’s ideas online
Example
People love to **upload their thoughts** on social media.
idiom

Buy low, sell high

Meaning
The strategy of buying goods or assets cheaply and selling them for a profit.
Example
Every investor dreams to **buy low, sell high**.
idiom

honor one's promise

Meaning
to keep a promise or commitment
Example
She **honored her promise** to visit the orphanage.
idiom

reboot your perspective

Meaning
to start fresh with a new mindset
Example
After project failure, the team decided to **reboot their perspective**.
idiom

A negative outlook

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

Spin a story

Meaning
To present a story in a way that is intended to influence people's opinions or beliefs.
Example
The journalist managed to **spin a story** that made the politician look like a hero.
idiom

go over

Meaning
to review or discuss something thoroughly
Example
Can we **go over** the agenda together?
idiom

to be ahead of the curve

Meaning
to be more advanced than others
Example
Her research was **ahead of the curve** in the field of artificial intelligence.
idiom

stick around

Meaning
to stay in a place for a short time longer
Example
Can you **stick around** for the Q&A session?
idiom

school someone in something

Meaning
to teach someone about a subject or skill
Example
He **schooled me in** the basics of computer programming.
idiom

cut your teeth

Meaning
to gain initial experience in a particular area or job
Example
He **cut his teeth** in the banking industry before starting his own firm.
idiom

jot down quickly

Meaning
to write something fast so you don’t forget
Example
**Jot down quickly** the ideas that come up in the meeting.
idiom

swear on one’s life

Meaning
to make a very serious promise that something is true
Example
I **swear on my life**, I didn’t do it!
idiom

tie the knot of friendship

Meaning
to start a friendship
Example
They **tied the knot of friendship** during college.
idiom

Nero fiddled while Rome burned

Meaning
To ignore a crisis or serious situation while doing something trivial.
Example
The leader was accused of **fiddling while Rome burned** during the economic collapse.
idiom

yawn fest

Meaning
something extremely boring
Example
That lecture was a total **yawn fest**.
idiom

jack up

Meaning
to raise something suddenly and sharply
Example
They might **jack up** ticket prices before the holidays.
idiom

turn over a new leaf

Meaning
to start behaving better after doing something wrong
Example
After the accident, he decided to **turn over a new leaf**.
idiom

put in long hours

Meaning
to work for many hours
Example
He’s been **putting in long hours** to finish the report.
idiom

get your point across

Meaning
to express an idea clearly so that others understand it
Example
It’s important to **get your point across** during discussions.
idiom

roll with laughter

Meaning
to laugh uncontrollably
Example
The comedian made the whole audience **roll with laughter**.
idiom

phishing

Meaning
A method of trying to gather personal information using deceptive emails, websites, or other communications.
Example
He received an email that looked legitimate, but it was actually a **phishing** attempt.
idiom

strike it lucky

Meaning
to have unexpected good fortune
Example
We **struck it lucky** and found the last two tickets.
idiom

from the bottom of my heart

Meaning
with sincere gratitude
Example
I thank you **from the bottom of my heart** for everything.
idiom

confide in someone

Meaning
to trust someone enough to tell them secrets
Example
She only **confides in** her best friend.
idiom

go bananas over something

Meaning
to become extremely excited or enthusiastic about something
Example
Kids **go bananas over** the new video game console.
idiom

hit rock bottom

Meaning
to reach the lowest point of failure or depression
Example
After losing his job, he **hit rock bottom**.
idiom

keep your 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

glass half full

Meaning
to see things positively rather than negatively
Example
He always sees the **glass half full**, no matter what happens.
idiom

show the ropes

Meaning
to teach someone how to do a job or task
Example
It took me a while to **show the ropes** to the new employee, but now they’re doing well.
idiom

a breath of fresh air

Meaning
something new and refreshing
Example
Her positive attitude is **a breath of fresh air** in the office.
idiom

enter stage left

Meaning
to appear or arrive dramatically in a situation
Example
Just when things got complicated, **enter stage left**—our new competitor!
idiom

as free as a bird

Meaning
completely free; without worries
Example
After the exams, I felt **as free as a bird**.
idiom

behind the eight ball

Meaning
to be in a difficult position or disadvantage
Example
Without proper funding, the project is **behind the eight ball**.
idiom

justice will prevail

Meaning
in the end, right will triumph over wrong
Example
Even though the case was difficult, I believe that **justice will prevail**.
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

feel like a new person

Meaning
to feel refreshed and healthy again
Example
After a good night’s sleep, I **feel like a new person**.
idiom

Nothing ventured, nothing gained

Meaning
you can’t achieve anything if you don’t take risks
Example
He decided to invest because **nothing ventured, nothing gained**.
idiom

reduce carbon footprint

Meaning
to decrease the amount of carbon dioxide and other greenhouse gases released into the atmosphere
Example
Many companies are working to **reduce their carbon footprint** by using renewable energy.
idiom

draw on

Meaning
to use something as a resource
Example
We’ll **draw on** last year’s data for the report.
idiom

sleep on

Meaning
to delay making a decision until the next day
Example
I'll **sleep on** it and let you know my answer tomorrow.
idiom

tear-jerker

Meaning
something that makes you cry, especially a movie or story
Example
That movie was such a **tear-jerker**.
idiom

on the fence

Meaning
undecided or unsure about something
Example
She’s still **on the fence** about moving abroad.
idiom

hit the town

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

peace and quiet

Meaning
a time of calmness and tranquility
Example
I just need some **peace and quiet** to finish my work.
idiom

Bet the farm

Meaning
To risk everything on one big decision.
Example
He **bet the farm** on that business deal.
idiom

penny pincher

Meaning
someone who is very careful about spending money
Example
My uncle is such a **penny pincher** that he reuses tea bags.
idiom

carbon neutral

Meaning
achieving a net-zero carbon footprint, where the amount of carbon dioxide released is equal to the amount removed from the atmosphere
Example
By planting trees and reducing emissions, the company is aiming to become **carbon neutral**.
idiom

ease off

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

Ride it out

Meaning
Endure a difficult situation until it improves.
Example
We just need to **ride it out** until things get better.
idiom

a close call

Meaning
A situation where a disaster or accident was narrowly avoided.
Example
That was **a close call** — the car almost hit us!
idiom

put in the hours

Meaning
to spend a lot of time working
Example
If you **put in the hours**, you’ll see progress soon.
idiom

work around the clock

Meaning
to work continuously day and night
Example
They **worked around the clock** to finish the project.
idiom

fall head over heels for someone

Meaning
to fall deeply in love with someone
Example
He **fell head over heels for her** the moment they met.
idiom

lovey-dovey

Meaning
showing a lot of affection publicly
Example
The couple was being **lovey-dovey** at the restaurant.
idiom

turn the tables

Meaning
to reverse a situation and gain the upper hand
Example
They were losing, but managed to **turn the tables** in the final round.
idiom

out of this world

Meaning
extremely good or impressive
Example
The food at that restaurant is **out of this world**.
idiom

raise the white flag

Meaning
to surrender or give up
Example
After several failed attempts, he finally **raised the white flag**.
idiom

to kick the bucket

Meaning
to die (humorous or informal)
Example
He used to joke that he’d travel the world before he **kicked the bucket**.
idiom

white hat

Meaning
a hacker who uses skills ethically to improve security
Example
**White hats** help companies identify and fix security flaws.
idiom

predictive analytics

Meaning
using data and statistical algorithms to forecast future outcomes
Example
With **predictive analytics**, we can forecast market trends with high accuracy.
idiom

a heavy heart

Meaning
a feeling of deep sadness or sorrow
Example
She left her hometown with **a heavy heart**.
idiom

Hot off the press

Meaning
Newly printed; very recent news
Example
The report was **hot off the press**, released just minutes ago.
idiom

good to see you

Meaning
a friendly way to greet someone you know
Example
**Good to see you** again after so long!
idiom

make ends meet

Meaning
to earn enough money to live on
Example
He works two jobs to **make ends meet**.
idiom

the law of supply and demand

Meaning
an economic theory that states that the price of a good or service is determined by the availability of the product (supply) and the demand for it
Example
The **law of supply and demand** dictates that prices will rise if demand outstrips supply.
idiom

dead tired

Meaning
extremely tired or exhausted
Example
After the long trip, we were **dead tired**.
idiom

in your face advertising

Meaning
aggressive or very direct form of advertising
Example
Some brands use **in your face advertising** to stay memorable.
idiom

hit the books

Meaning
to study very hard
Example
I can’t go out tonight; I need to **hit the books** for my exam.
idiom

dump someone

Meaning
to end a romantic relationship suddenly or unkindly
Example
She **dumped** him by text message.
idiom

have an axe to grind

Meaning
to have a personal reason to complain or criticize
Example
She **has an axe to grind** with her former employer.
idiom

a flash in the pan

Meaning
something that seems promising at first but fails to deliver
Example
The peace talks were just **a flash in the pan**.
idiom

reach new heights

Meaning
to achieve more than before, to improve
Example
Their business is now **reaching new heights** in terms of revenue.
idiom

nose around

Meaning
to search for information in a curious way
Example
Reporters began to **nose around** after the leak.
idiom

debug the situation

Meaning
to analyze and solve a problem carefully; borrowed from programming
Example
We need to **debug the situation** before it gets worse.
idiom

mull over

Meaning
to think carefully about something
Example
Take a day to **mull over** the offer.
idiom

factor in

Meaning
to include something as part of a calculation or plan
Example
Remember to **factor in** travel time when planning.
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

money burns a hole in your pocket

Meaning
to be eager to spend money quickly
Example
He just got paid, and already **money burns a hole in his pocket**.
idiom

see the light at the end of the tunnel

Meaning
to begin to see signs of improvement after a long period of difficulty
Example
After months of effort, we can finally **see the light at the end of the tunnel**.
idiom

weigh the pros and cons

Meaning
to consider the advantages and disadvantages before making a choice
Example
You should **weigh the pros and cons** before quitting your job.
idiom

Frankenstein’s monster

Meaning
A creation that turns against its creator.
Example
Social media became a **Frankenstein’s monster** for its inventors.
idiom

Eager beaver

Meaning
A person who is very enthusiastic and eager to do something.
Example
She's an **eager beaver** who always volunteers for extra tasks.
idiom

To move mountains

Meaning
To achieve something very difficult or seemingly impossible.
Example
With determination, she can **move mountains**.
idiom

wise beyond his years

Meaning
showing maturity or wisdom greater than expected for one’s age
Example
Even as a child, he was **wise beyond his years**.
idiom

worth one's salt

Meaning
to be competent or deserving respect in one’s field
Example
Any engineer **worth his salt** can solve this problem.
idiom

mark up

Meaning
to increase the price of something
Example
Vendors plan to **mark up** prices during the festival.
idiom

ease back

Meaning
to relax or slow down the pace of something
Example
After the deadline, we can **ease back** a little.
idiom

golden opportunity

Meaning
a very good chance; rare opportunity
Example
This is a **golden opportunity** to show your talent.
idiom

get a clean bill of health

Meaning
to be declared completely healthy by a doctor
Example
After his check-up, he **got a clean bill of health**.
idiom

wipe the slate clean

Meaning
to forget past mistakes and start fresh
Example
Let’s **wipe the slate clean** and begin again.
idiom

get down to business

Meaning
to start working seriously
Example
Let’s stop chatting and **get down to business**.
idiom

button up

Meaning
to finish preparations or close something securely
Example
Let’s **button up** the proposal by Friday.
idiom

As green as grass

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

lose your mind

Meaning
to become mentally unstable or extremely upset
Example
He nearly **lost his mind** after the breakup.
idiom

There's no 'I' in team

Meaning
Emphasizing that teamwork is important, and it is not about individual glory.
Example
Remember, in a project, **there's no 'I' in team**.
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

count on

Meaning
to rely on or trust someone to do something
Example
You can always **count on** me.
idiom

at your wits' end

Meaning
to be so worried or stressed that you don’t know what to do
Example
I’m **at my wits’ end** trying to finish all this work.
idiom

log off

Meaning
to disconnect from a computer system
Example
Don’t forget to **log off** before you leave the office.
idiom

Wishful thinking

Meaning
Believing something because you want it to be true, not because it is realistic.
Example
Believing you'll win the lottery is just **wishful thinking**.
idiom

draw in

Meaning
to attract someone’s interest
Example
The bold headline **drew in** readers right away.
idiom

open to abuse

Meaning
liable to be misused or exploited
Example
Facial recognition technology is **open to abuse** if not regulated.
idiom

pull an all-nighter

Meaning
to stay awake all night to study or work
Example
I had to **pull an all-nighter** to finish my assignment.
idiom

talk the talk

Meaning
to speak confidently about something
Example
He can **talk the talk**, but can he walk the walk?
idiom

make small talk

Meaning
to have a casual conversation about unimportant topics
Example
We started to **make small talk** while waiting for the meeting to begin.