on the tip of one's tongue
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idiom

on the tip of one's tongue

Meaning
when you can almost remember something but not quite
Example
His name is **on the tip of my tongue**, but I can’t recall it.
phrasal-verb

open hearts to

Meaning
to show kindness and acceptance toward people of other cultures
Example
We should **open our hearts to** people who are different from us.
idiom

on trial

Meaning
being tested or judged
Example
The company is **on trial** for violating privacy laws.
phrasal-verb

open eyes to

Meaning
to make someone realize or become aware of something important
Example
The film **opened people’s eyes to** the struggles of the poor.
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.
phrasal-verb

own up to mistakes

Meaning
to admit errors openly so they can be fixed
Example
Good leaders **own up to mistakes** before they snowball.
idiom

on the rise

Meaning
increasing or growing in value or number
Example
Tech stocks are **on the rise** this quarter.
idiom

Open book

Meaning
Someone who is easy to understand or transparent.
Example
She’s an **open book**; you always know what she’s thinking.
idiom

on the cutting edge

Meaning
at the forefront of innovation or technology
Example
The laboratory is **on the cutting edge** of artificial intelligence research.
idiom

own the mistake

Meaning
to take responsibility for doing something wrong
Example
A good leader knows how to **own the mistake** and learn from it.
idiom

On the drawing board

Meaning
In the planning or design stage
Example
The new product is still **on the drawing board**, but it will be launched next year.
idiom

on edge

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

open out

Meaning
to become more confident, relaxed, and expressive emotionally
Example
He started to **open out** after making new friends at work.
phrasal-verb

open your heart

Meaning
to become more emotionally available or loving
Example
She decided to **open her heart** to love again.
idiom

on fire

Meaning
performing very well; full of energy and success
Example
The sales team is **on fire** this month!
idiom

over the moon

Meaning
extremely pleased or happy
Example
She was **over the moon** when she won the prize.
idiom

on cue

Meaning
exactly at the right moment
Example
The dog barked **on cue** when the actor opened the door.
phrasal-verb

open yourself to experiences

Meaning
to be willing to try new cultural activities or perspectives
Example
When you **open yourself to experiences**, you grow beyond your comfort zone.
idiom

off the beaten track

Meaning
in a place not visited by many people; remote or unusual
Example
We found a lovely beach **off the beaten track**.
idiom

on the run

Meaning
trying to avoid being caught by the police
Example
The suspect has been **on the run** for three days.
idiom

open up about

Meaning
to share personal thoughts or feelings
Example
He finally **opened up about** the project stress.
idiom

on the bench

Meaning
serving as a judge in a court
Example
She spent 20 years **on the bench** before retiring.
idiom

open a Pandora’s box

Meaning
to start something that causes many unexpected problems
Example
Unregulated AI development may **open a Pandora’s box** of ethical issues.
phrasal-verb

open with gratitude

Meaning
to start a conversation or message by expressing thanks
Example
She **opened with gratitude** before discussing the main issue.
idiom

opt out

Meaning
to choose not to participate
Example
Employees can **opt out** of the program if they want.
idiom

on your shoulders

Meaning
used when someone has responsibility for something
Example
The success of this plan rests **on your shoulders**.
idiom

out of one’s mind

Meaning
crazy or extremely worried
Example
He must be **out of his mind** to drive so fast in the rain.
idiom

own your mistakes

Meaning
to take responsibility for what you did wrong.
Example
It’s important to **own your mistakes** and learn from them.
idiom

out with the old, in with the new

Meaning
to replace old things or ideas with new ones
Example
It's time for **out with the old, in with the new**.
idiom

on good terms

Meaning
to have a friendly and peaceful relationship
Example
They are still **on good terms** even after the breakup.
phrasal-verb

open up to differences

Meaning
to accept and appreciate diversity
Example
Children should learn to **open up to differences** from an early age.
idiom

out of the frying pan into the fire

Meaning
to go from a bad situation to a worse one
Example
Leaving that job was like jumping **out of the frying pan into the fire**.
idiom

out of sorts

Meaning
feeling slightly unwell or upset
Example
He’s been **out of sorts** since he caught that cold.
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.
phrasal-verb

open up inside

Meaning
to become emotionally available to yourself and recognize your true emotions
Example
When he learned to **open up inside**, he finally stopped hiding his pain.
phrasal-verb

open up to feedback

Meaning
to be willing to listen and accept constructive criticism
Example
A good leader must **open up to feedback** from the team.
phrasal-verb

open out to

Meaning
to become more receptive or welcoming toward new cultures or experiences
Example
Traveling helped her **open out to** different perspectives.
idiom

own up to

Meaning
to admit or confess to something you did wrong
Example
She finally **owned up to** breaking the vase.
phrasal-verb

open your mind to

Meaning
to start considering or accepting new ideas or opinions
Example
Studying anthropology can help you **open your mind to** cultural diversity.
phrasal-verb

open up trade

Meaning
to make international trade easier by removing barriers
Example
The new agreement will **open up trade** between the two nations.
phrasal-verb

opt for

Meaning
to choose one thing instead of another
Example
We decided to **opt for** the smaller but cheaper apartment.
phrasal-verb

open emotionally to

Meaning
to allow emotional vulnerability and express real feelings to someone
Example
It’s hard for him to **open emotionally to** others after being hurt.
idiom

on the right side of the law

Meaning
acting legally; not breaking any laws
Example
He wants to stay **on the right side of the law**.
phrasal-verb

open minds through dialogue

Meaning
to encourage understanding between cultures by communicating openly
Example
The conference aimed to **open minds through dialogue** between communities.
idiom

on the stump

Meaning
to campaign for political office, especially by giving speeches in public
Example
The candidate has been **on the stump** for weeks, rallying support across the country.
idiom

on the money

Meaning
exactly correct or accurate
Example
His prediction about the stock was **on the money**.
idiom

on the beat

Meaning
a police officer's regular patrol route
Example
The officer was **on the beat** when he spotted the suspect.
idiom

old flame

Meaning
a person one had a romantic relationship with in the past
Example
He met his **old flame** at the reunion.
idiom

on the cutting block

Meaning
being considered for elimination or discontinuation
Example
Due to budget cuts, several research projects are now **on the cutting block**.
idiom

out of the blue

Meaning
unexpectedly or without warning
Example
My old friend called me **out of the blue** after ten years.
phrasal-verb

open yourself emotionally

Meaning
to allow yourself to feel and express emotions freely
Example
It's not easy to **open yourself emotionally** after being hurt.
idiom

off the cuff

Meaning
to speak or perform without preparation
Example
He gave an **off the cuff** remark that impressed everyone.
idiom

on the level

Meaning
honest and sincere; not trying to deceive
Example
You can trust her—she’s **on the level**.
idiom

off the top of my head

Meaning
without much thought or preparation
Example
Off the top of my head, I’d say we need more time.
idiom

open a new chapter

Meaning
to begin a new stage or period in life
Example
Graduating from university **opened a new chapter** in her life.
idiom

own up to your mistakes

Meaning
to admit that you have done something wrong
Example
It takes courage to **own up to your mistakes**.
idiom

off script

Meaning
to deviate from a prepared plan or speech
Example
During the meeting, he went **off script** and made some bold statements.
idiom

offstage

Meaning
outside of public attention or in private life
Example
He is very different **offstage** than he appears in his shows.
phrasal-verb

open up communication

Meaning
to start or improve honest and clear communication
Example
They tried to **open up communication** to solve their issues.
idiom

out of one’s comfort zone

Meaning
doing something unfamiliar or challenging
Example
She stepped **out of her comfort zone** to take a new job.
phrasal-verb

open the lines of communication

Meaning
to start talking again after a period of silence
Example
She wanted to **open the lines of communication** with her best friend again.
idiom

out of bandwidth

Meaning
too busy or overwhelmed to handle more tasks
Example
I’m **out of bandwidth** today, can we talk tomorrow?
phrasal-verb

open up new horizons

Meaning
to create new opportunities for learning or understanding different cultures
Example
Studying abroad can **open up new horizons** for personal and cultural growth.
phrasal-verb

offer help

Meaning
to volunteer to assist someone kindly
Example
It’s thoughtful to **offer help** when someone is struggling.
idiom

Old hat

Meaning
Something that is outdated or no longer interesting
Example
That style is **old hat** now—no one wears it anymore.
idiom

off the wall

Meaning
unusual or unconventional
Example
His ideas are often **off the wall**, but they sometimes work.
idiom

out for blood

Meaning
to be extremely determined to defeat or punish someone
Example
After losing last time, the team is **out for blood** this season.
idiom

outstanding in one’s field

Meaning
to be exceptionally good at one’s work
Example
She’s **outstanding in her field** as a scientist.
idiom

out like a light

Meaning
to fall asleep very quickly
Example
He was **out like a light** as soon as his head hit the pillow.
idiom

on thin ice

Meaning
in a risky or dangerous situation
Example
You are **on thin ice** with that behavior.
phrasal-verb

open up to diversity

Meaning
to become accepting and appreciative of different backgrounds or perspectives
Example
Education helps people **open up to diversity** and reduce prejudice.
idiom

on the market

Meaning
available for sale
Example
Their house has been **on the market** for over six months.
idiom

on the stand

Meaning
testifying as a witness in court
Example
She was nervous when she was **on the stand**.
idiom

on the fast track

Meaning
advancing quickly in a career or project
Example
He is **on the fast track** to becoming a manager.
idiom

old friends are gold

Meaning
old friends are precious and valuable
Example
I always say, **old friends are gold**.
phrasal-verb

open up markets

Meaning
to make trade or business opportunities available; to remove barriers to trade
Example
The trade agreement helped **open up markets** for local exporters.
phrasal-verb

open up to trade

Meaning
to start allowing international trade or economic exchange
Example
Many developing nations are trying to **open up to trade** to attract foreign investment.
phrasal-verb

open yourself up to

Meaning
to allow yourself to express feelings or be vulnerable
Example
He learned to **open himself up to** love again.
phrasal-verb

open toward

Meaning
to show warmth or acceptance toward someone
Example
He became more **open toward** his classmates.
phrasal-verb

open up new perspectives

Meaning
to help someone see things in a new or different way
Example
Traveling to different countries can **open up new perspectives** on life.
idiom

Out of focus

Meaning
Not clear or not paying attention
Example
He looked tired and completely **out of focus** during the meeting.
idiom

on the house

Meaning
free of charge; paid for by the establishment
Example
The drinks were **on the house** tonight.
phrasal-verb

owe to

Meaning
to feel you should thank someone for something
Example
I **owe my success to** my parents’ support.
idiom

online presence

Meaning
the existence and activity of a person or business on the internet
Example
A strong **online presence** is essential for digital marketing.
idiom

on the sly

Meaning
secretly; in a sneaky way
Example
He met her **on the sly** without telling anyone.
idiom

open to abuse

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

on your own shoulders

Meaning
to be responsible for something yourself
Example
The success of this event rests **on your own shoulders**.
idiom

over the horizon

Meaning
something that is expected to happen soon
Example
A big change in the market may be **over the horizon**.
idiom

olive branch

Meaning
a gesture of peace or reconciliation
Example
The president extended an **olive branch** by inviting his rival to the summit.
idiom

old buddy old pal

Meaning
An affectionate way to refer to a longtime friend.
Example
Hey **old buddy old pal**, long time no see!
idiom

on shaky ground

Meaning
in an uncertain or unstable situation
Example
His business is **on shaky ground** after the market crash.
phrasal-verb

open up with

Meaning
to start a conversation by being honest or expressive about feelings
Example
He chose to **open up with** a personal story to make others feel comfortable.
idiom

out of the picture

Meaning
no longer involved or relevant
Example
After the gallery closed, the curator was **out of the picture**.
idiom

Out of curiosity

Meaning
Because of a desire to know or learn something.
Example
I asked him **out of curiosity**, not to interfere.
idiom

open Pandora’s box

Meaning
to start something that causes many unforeseen problems
Example
Creating sentient AI could **open Pandora’s box** of ethical challenges.
idiom

on cloud nine

Meaning
extremely happy; overjoyed
Example
She was **on cloud nine** after getting the job.
idiom

on the front line

Meaning
directly involved in the most active or dangerous part of something
Example
Doctors were **on the front line** during the pandemic.
idiom

on the same page

Meaning
to agree or have the same understanding about something
Example
Before we continue, let’s make sure we’re **on the same page**.
idiom

off the top of one's head

Meaning
to say something without thinking carefully or checking
Example
**Off the top of my head**, I think there are five options.
phrasal-verb

own out of

Meaning
to stop being involved because of ethical concerns
Example
The company **owned out of** the project due to ethical issues.
idiom

on the same wavelength

Meaning
to think in a similar way as someone else
Example
My best friend and I are always **on the same wavelength**.
idiom

out of bounds

Meaning
not allowed or beyond acceptable limits
Example
His rude comment was **out of bounds**.
idiom

on good terms with

Meaning
having a friendly and positive relationship with someone
Example
She’s **on good terms with** her ex-husband for the kids’ sake.
idiom

Old school

Meaning
Having traditional ideas or values; not modern
Example
My father still prefers handwritten letters; he’s really **old school**.
phrasal-verb

open within

Meaning
to connect with your inner emotions and understand yourself better
Example
Yoga helps me to **open within** and feel peaceful.
phrasal-verb

overflow with

Meaning
to have a large amount of positive feeling or emotion
Example
The parents were **overflowing with** pride at their son’s success.
phrasal-verb

own responsibility for

Meaning
to accept that you are accountable for something that happened
Example
He chose to **own responsibility for** the team’s delay.
phrasal-verb

open out your heart

Meaning
to share your deep emotions honestly with someone
Example
He finally **opened out his heart** to his best friend.
idiom

on the fence

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

off the air

Meaning
no longer being broadcasted
Example
The show went **off the air** after ten years.
idiom

on the spot

Meaning
to make a decision immediately
Example
He was asked to decide **on the spot**.
phrasal-verb

open up about kindness

Meaning
to speak honestly about acts of kindness or gratitude
Example
He finally **opened up about kindness** he received from strangers.
idiom

on the right track

Meaning
to be going in the correct direction to achieve success
Example
Your plan sounds great — you’re **on the right track**.
idiom

once in a blue moon

Meaning
very rarely
Example
I only see him **once in a blue moon**.
phrasal-verb

open up to someone

Meaning
to share personal feelings or problems with someone you trust
Example
He finally **opened up to** his friend about what he had been going through.
phrasal-verb

open up over

Meaning
to share personal thoughts because of a particular topic
Example
She finally **opened up over** her anxiety during group coaching.
idiom

off the top of your head

Meaning
to say something without deep thinking or preparation
Example
I can’t remember the exact number **off the top of my head**.
phrasal-verb

open communication with

Meaning
to establish an honest and transparent exchange of thoughts and feelings
Example
Couples should **open communication with** each other to avoid misunderstandings.
idiom

out of the box thinking

Meaning
thinking in a new, innovative, or creative way
Example
The solution requires **out of the box thinking** from all team members.
idiom

outsmart the algorithm

Meaning
to beat or trick a system that uses AI or automation
Example
People try to **outsmart the algorithm** to boost their posts.
phrasal-verb

open yourself to

Meaning
to allow yourself to experience emotions or connections
Example
He finally decided to **open himself to** love again.