on the front line
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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 fast track

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

on your plate

Meaning
something that is your responsibility or job to handle
Example
I have too much **on my plate** right now with all the projects.
idiom

on the ball

Meaning
alert, smart, and quick to react
Example
You need to be **on the ball** to handle this job.
phrasal-verb

offer help

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

open around

Meaning
to act friendly and emotionally available with people nearby
Example
She always **opens around** people she trusts.
phrasal-verb

open up to challenges

Meaning
to be willing to face or accept difficult situations with confidence
Example
If you want to grow, you must **open up to challenges** instead of avoiding them.
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

over the moon

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

off to a flying start

Meaning
to begin something, like a journey, very successfully
Example
Our trip was **off to a flying start** with perfect weather.
idiom

on your last legs

Meaning
completely exhausted or near collapse
Example
After working 18 hours straight, I was **on my last legs**.
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

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.
idiom

out of the woods

Meaning
no longer in danger or difficulty
Example
She’s recovering now, so she’s **out of the woods**.
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.
phrasal-verb

open up to change

Meaning
to become willing to accept new ideas or practices
Example
Societies progress when people **open up to change**.
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.
idiom

open one's heart

Meaning
to express feelings or emotions honestly
Example
She finally decided to **open her heart** and share her feelings.
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 up to others

Meaning
to share thoughts and feelings with people from other cultures
Example
When you **open up to others**, you start to understand their perspectives better.
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.
idiom

Out of sight, out of mind

Meaning
People or things forgotten when not visible or present.
Example
After moving away, our friendship faded—**out of sight, out of mind**.
idiom

old friends are gold

Meaning
old friends are precious and valuable
Example
I always say, **old friends are gold**.
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.
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 your heart to

Meaning
to express love, trust, or care freely
Example
It’s important to **open your heart to** those who care about you.
idiom

on the fence

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

out of the blue

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

outside the box

Meaning
thinking or acting in an unusual or unconventional way
Example
To solve this problem, we need to think **outside the box**.
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.
phrasal-verb

open relations with

Meaning
to start official or friendly relations with another country
Example
After years of tension, the two countries agreed to **open relations with** each other.
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

on the beat

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

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

on top of the world

Meaning
to feel extremely happy and successful
Example
After winning the award, he felt **on top of the world**.
idiom

opt out

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

on background

Meaning
information given to a journalist that cannot be attributed to the source
Example
The official spoke **on background** about the new policy.
idiom

out of the box

Meaning
creative and different from usual ideas
Example
Her **out of the box** marketing strategy increased sales rapidly.
idiom

opt out of

Meaning
to choose not to participate in something
Example
You can **opt out of** the newsletter at any time.
idiom

on thin ice

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

open up space for joy

Meaning
to make emotional room for happiness after pain
Example
After forgiving herself, she began to **open up space for joy**.
idiom

on your own shoulders

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

on the up and up

Meaning
honest; truthful; not involved in any wrongdoing
Example
She’s always been **on the up and up** with me.
phrasal-verb

open onto

Meaning
to lead to a place or opportunity for connection
Example
This conversation could **open onto** a deeper understanding between us.
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

Old hat

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

on the market

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

off the wall

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

opt in

Meaning
to choose to participate
Example
Employees can **opt in** to the wellness program.
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.
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.
phrasal-verb

open through

Meaning
to access understanding by going through experiences of another culture
Example
You can **open through** empathy to truly understand cultural values.
phrasal-verb

open channels with

Meaning
to start communication with an individual or group
Example
The company **opened channels with** its overseas partners to share updates.
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 a shoestring budget

Meaning
To live or do something with very little money.
Example
They traveled across Asia **on a shoestring budget**.
idiom

out of left field

Meaning
something unexpected or surprising
Example
His question came **out of left field** and shocked everyone.
idiom

on the spot

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

open up to courage

Meaning
to allow bravery and confidence to enter one’s mind
Example
She slowly **opened up to courage** after years of doubt.
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

open channels of communication

Meaning
to establish dialogue or discussion
Example
They tried to **open channels of communication** with the neighboring country.
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

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.
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.
phrasal-verb

open out with

Meaning
to start being honest and expressive with someone about emotions
Example
She **opened out with** her husband about her anxiety.
idiom

on the big screen

Meaning
appearing in a cinema film
Example
Her novel was adapted **on the big screen** last year.
idiom

on trial

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

open with

Meaning
to begin something by doing or saying something specific
Example
He **opened with** a personal story to connect with the audience.
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.
phrasal-verb

open up to

Meaning
to become more willing to accept or consider new ideas, cultures, or people
Example
As globalization spread, many countries began to **open up to** cultural exchange.
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 air

Meaning
broadcasting live; being aired on television or radio
Example
The radio show will be **on air** from 7 to 9 PM.
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

On the breadline

Meaning
Living in poverty or with very little money.
Example
After losing his job, he was almost **on the breadline**.
idiom

off the hook

Meaning
to be free from blame or responsibility for something
Example
He was **off the hook** after his friend confessed.
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

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.
idiom

on your shoulders

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

open toward

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

Open a can of worms

Meaning
To start something that creates many new problems.
Example
By questioning the policy, he **opened a can of worms**.
phrasal-verb

open doors for

Meaning
to create opportunities or possibilities for connection or collaboration
Example
Joining community events can **open doors for** meaningful relationships.
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 out to

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

off the beaten path

Meaning
doing something unusual or original
Example
Her ideas are always **off the beaten path**.
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

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.
phrasal-verb

open yourself up to feedback

Meaning
to be willing to receive and accept constructive criticism
Example
To grow, you need to **open yourself up to feedback** from others.
idiom

off the cuff

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

out of orbit

Meaning
beyond control; off the usual path
Example
The project went **out of orbit** after the manager left.
idiom

old friend

Meaning
a friend you have known for a long time
Example
I met an **old friend** from college yesterday.
phrasal-verb

opt against

Meaning
to decide not to choose a particular option
Example
After considering the risks, the company **opted against** the merger.
idiom

offbeat

Meaning
unusual; different from the norm
Example
His **offbeat** sense of humor makes everyone laugh.
idiom

on the rocks

Meaning
in trouble or likely to fail (especially a relationship or marriage)
Example
Their marriage is **on the rocks** after constant arguments.
idiom

over it

Meaning
no longer interested or affected by something
Example
I'm totally **over it** now.
idiom

open to abuse

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

open up to ideas

Meaning
to be receptive to new and different ideas
Example
We should **open up to ideas** from junior staff as well.
idiom

on the same playing field

Meaning
in the same conditions or with equal chances
Example
We’re now **on the same playing field** as our competitors.
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

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.
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.
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.
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

one in a million

Meaning
very special or rare
Example
Her kindness makes her **one in a million**.
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

on the line

Meaning
at risk; in danger of being lost
Example
The company’s reputation is **on the line** after the failed shipment.
idiom

on the money

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

on cloud nine

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

out of sorts

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

off the rails

Meaning
to become uncontrolled or chaotic
Example
After his friend moved away, his life went **off the rails**.
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

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

open up about

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

open up

Meaning
to become willing to share thoughts or to start operating
Example
He finally **opened up** about the challenges he’s facing.
phrasal-verb

open doors to

Meaning
to create opportunities for cultural connection or understanding
Example
Cultural exchange programs **open doors to** meaningful friendships worldwide.
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

Open-minded

Meaning
Willing to consider new ideas or opinions.
Example
A good therapist must be **open-minded**.
phrasal-verb

open out of yourself

Meaning
to express your true feelings freely; to become emotionally available
Example
It's healthy to **open out of yourself** when you're feeling overwhelmed.
idiom

Out of focus

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