rocket science
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idiom

rocket science

Meaning
something very complicated or difficult to understand
Example
Coding isn’t **rocket science** if you practice regularly.
idiom

Rome wasn’t built in a day

Meaning
Important things take time to accomplish.
Example
**Rome wasn’t built in a day**, be patient with your progress.
idiom

Running on empty

Meaning
To continue working or functioning when you have no energy left.
Example
After pulling an all-nighter, he’s **running on empty** today.
idiom

roam around

Meaning
to travel or walk around aimlessly
Example
We spent the afternoon **roaming around** the old city.
idiom

rub someone the wrong way

Meaning
to irritate or annoy someone without intending to
Example
His attitude tends to **rub people the wrong way**.
idiom

runway for growth

Meaning
the time or resources a startup has before it needs more funding
Example
The startup has enough **runway for growth** for the next 12 months.
idiom

Rise from the ashes

Meaning
To recover and become strong again after failure or destruction.
Example
The company **rose from the ashes** after going bankrupt.
idiom

raise the white flag

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

Run the risk

Meaning
To do something that may result in loss or danger.
Example
You’ll **run the risk** of losing everything if you lie.
idiom

rising tide lifts all boats

Meaning
economic growth benefits everyone; a general improvement in the economy helps all participants
Example
The government's new policies are helping the economy, and as a result, **a rising tide lifts all boats**.
idiom

reach the top

Meaning
to achieve the highest position or level in something
Example
After years of hard work, she finally **reached the top** of her profession.
idiom

rope in

Meaning
to persuade someone to join an activity
Example
They **roped me in** to help with the charity event.
idiom

reboot your perspective

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

raise the stakes

Meaning
to increase the level of risk or difficulty
Example
We need to **raise the stakes** if we want to make a bigger impact.
idiom

roll with the punches

Meaning
to adapt to difficulties and keep going
Example
Life throws challenges, so we must **roll with the punches**.
idiom

rest easy

Meaning
to be free from worry or fear
Example
You can **rest easy** knowing everything is under control.
idiom

rock the boat

Meaning
to cause problems or upset a stable situation
Example
Everything is going well, so let's not **rock the boat** with unnecessary changes.
idiom

roll credits

Meaning
to finish or conclude something
Example
Once the project is done, we can **roll credits**.
idiom

reach out

Meaning
to contact someone for help or communication
Example
Feel free to **reach out** if you have more questions.
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

read someone like a book

Meaning
to easily understand someone's thoughts and intentions
Example
She can **read him like a book** and always knows when he's lying.
idiom

Rewriting history

Meaning
To change the way past events are interpreted or remembered.
Example
Some politicians try **rewriting history** to suit their narrative.
idiom

run the show

Meaning
to be in charge of an activity or organization
Example
Ever since the director left, Emma has been **running the show**.
idiom

roll up one's sleeves

Meaning
to prepare to work hard or take on a challenge
Example
We need to **roll up our sleeves** if we want to finish this task on time.
idiom

red tape

Meaning
excessive bureaucracy or rules
Example
The project was delayed because of **red tape**.
idiom

run out of bandwidth

Meaning
to have no time or energy left; to be overwhelmed
Example
Sorry, I can’t take another task — I’ve **run out of bandwidth**.
idiom

ramp up

Meaning
to increase the intensity or amount of something
Example
We need to **ramp up** production before the holidays.
idiom

run down

Meaning
to feel tired or exhausted due to overwork or illness
Example
You look a bit **run down**; you should get some rest.
idiom

refresh one's memory

Meaning
to help someone remember something
Example
Let me **refresh your memory** about what happened last week.
idiom

rule with an iron fist

Meaning
to control people very strictly and harshly
Example
The dictator **ruled with an iron fist** for twenty years.
idiom

rise and shine

Meaning
wake up and start your day energetically
Example
**Rise and shine**, it’s a brand new day!
idiom

Roll up your sleeves

Meaning
To prepare to work hard.
Example
Let’s **roll up our sleeves** and get started.
idiom

read someone the riot act

Meaning
to warn or scold someone severely for bad behavior
Example
The teacher **read the students the riot act** after the chaos in class.
idiom

reboot your mindset

Meaning
to change your way of thinking completely
Example
To adapt to AI, we need to **reboot our mindset**.
idiom

reach out to

Meaning
to contact someone to offer or request help
Example
Feel free to **reach out to** me if you need support.
idiom

rope off

Meaning
to block an area by using a rope or barrier
Example
Staff will **rope off** the wet floor for safety.
idiom

roll with laughter

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

rule the roost

Meaning
to be the most powerful person in a group or family
Example
It’s clear that Mary **rules the roost** in that household.
idiom

reach for the moon

Meaning
to set very high goals
Example
Don’t be afraid to **reach for the moon**.
idiom

rags to riches

Meaning
to go from being poor to becoming rich and successful
Example
His life story is a real **rags to riches** tale.
idiom

ride out

Meaning
to survive a difficult situation
Example
We managed to **ride out** the storm without damage.
idiom

rules are made to be broken

Meaning
sometimes it's okay to ignore rules
Example
He believes **rules are made to be broken**.
idiom

run someone down

Meaning
to criticize someone unfairly; to speak badly about someone
Example
He always **runs his coworkers down** behind their backs.
idiom

raise a toast

Meaning
to honor someone or something with a drink
Example
We **raised a toast** to the newlyweds.
idiom

reach for the stars

Meaning
to aim for something very ambitious or difficult to achieve
Example
She always tells her students to **reach for the stars** and never give up.
idiom

raise the bar

Meaning
to set a higher standard or level of quality
Example
The new product really **raised the bar** for the industry.
idiom

rise through the ranks

Meaning
to gradually move up to higher positions in an organization
Example
He **rose through the ranks** to become the CEO.
idiom

rough patch

Meaning
a period of difficulty or trouble
Example
Their marriage went through a **rough patch** last year.
idiom

rack your brains

Meaning
to think very hard about something
Example
I had to **rack my brains** to remember her name.
idiom

roll into

Meaning
to transition smoothly into something
Example
The webinar will **roll into** a live Q&A.
idiom

reach your full potential

Meaning
to achieve the maximum ability or success that you are capable of
Example
By working hard, she was able to **reach her full potential**.
idiom

reach common ground

Meaning
to find shared interests or agreement between parties
Example
After a long discussion, they **reached common ground**.
idiom

rant and rave

Meaning
to shout and complain loudly
Example
He was **ranting and raving** about the bad service.
idiom

rule out

Meaning
to decide that something is not possible
Example
We can’t **rule out** another delay yet.
idiom

reinvent the wheel

Meaning
to waste time creating something that already exists
Example
Don’t **reinvent the wheel**; use the existing design.
idiom

run for office

Meaning
to campaign for a political position
Example
She decided to **run for office** next year.
idiom

raining cats and dogs

Meaning
raining very heavily
Example
It's **raining cats and dogs** outside!
idiom

recharge your batteries

Meaning
to rest and regain energy
Example
I took a vacation to **recharge my batteries**.
idiom

run like clockwork

Meaning
to operate smoothly and efficiently
Example
The production line **runs like clockwork** these days.
idiom

relieve stress

Meaning
to reduce or eliminate feelings of anxiety or pressure
Example
Yoga can really help to **relieve stress** and improve your mood.
idiom

rinse off

Meaning
to wash something quickly with water
Example
**Rinse off** the berries before serving them.
idiom

red-eye flight

Meaning
a flight that leaves late at night and arrives early in the morning
Example
I took a **red-eye flight** to save a day on my trip.
idiom

roll the credits

Meaning
to finish something officially
Example
After the final announcement, they **rolled the credits** on the project.
idiom

run out of time

Meaning
to have no more time available to complete something
Example
We **ran out of time** before finishing the project.
idiom

Roll the dice

Meaning
to take a chance on something uncertain
Example
They **rolled the dice** by launching their product early.
idiom

run in the family

Meaning
a characteristic that many members of a family share
Example
Good looks **run in the family** — all of them are beautiful!
idiom

robotic precision

Meaning
extremely accurate and consistent performance
Example
She performs her tasks with **robotic precision**.
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

right up one’s alley

Meaning
something that suits one’s interests or abilities perfectly
Example
That cooking workshop is **right up your alley**, you should join!
idiom

run circles around someone

Meaning
to be much better than someone at something
Example
She can **run circles around** anyone in the debate team.
idiom

raring to go

Meaning
very eager or excited to start something
Example
Everyone was **raring to go** when the event started.
idiom

ring up

Meaning
to calculate and record a sale
Example
The cashier will **ring up** your items at the counter.
idiom

rule of thumb

Meaning
a general practical principle based on experience
Example
As a **rule of thumb**, I double-check every document.
idiom

road to success

Meaning
the path or actions that lead to achievement
Example
Hard work is the **road to success**.
idiom

riding the wave

Meaning
taking advantage of a current trend or success
Example
The company is **riding the wave** of its recent success in the international market.
idiom

rolling in money

Meaning
having a lot of money
Example
After his business took off, he’s been **rolling in money**.
idiom

race against time

Meaning
to rush to complete something before a deadline
Example
We’re in a **race against time** to meet the client’s demand.
idiom

robotic process automation

Meaning
the use of AI to automate business processes
Example
Companies are embracing **robotic process automation** to reduce costs.
idiom

run your own show

Meaning
to be in control of your own activities or business
Example
After years of working for others, he wanted to **run his own show**.
idiom

rob Peter to pay Paul

Meaning
to take money from one part of something in order to pay for something else
Example
They're always **robbing Peter to pay Paul**, moving money around without making any progress.
idiom

run on empty

Meaning
to continue working even when you are tired or out of energy
Example
He’s been **running on empty** for weeks without a break.
idiom

rein in

Meaning
to control or limit something
Example
We must **rein in** our spending this quarter.
idiom

ray of hope

Meaning
a small sign that something good might happen
Example
The new treatment offers a **ray of hope** for patients.
idiom

rise and fall

Meaning
the success and failure of someone or something over time
Example
The documentary shows the **rise and fall** of the Roman Empire.
idiom

Runway

Meaning
The time a startup has before running out of cash.
Example
We only have six months of **runway** left.
idiom

roads less traveled

Meaning
choices or paths in life that are unusual or adventurous
Example
He prefers to take the **roads less traveled** and discover new cultures.
idiom

runway left

Meaning
the amount of time before a startup runs out of money
Example
We only have six months of **runway left** to make this work.
idiom

Risk it all

Meaning
To take a huge risk that could lead to loss.
Example
She decided to **risk it all** for her dream project.
idiom

reboot your life

Meaning
to start over or make a fresh beginning
Example
After losing his job, he decided to **reboot his life**.
idiom

roll with

Meaning
to adapt to changes or challenges easily
Example
The team had to **roll with** several last-minute changes to the schedule.
idiom

run out of steam

Meaning
to lose energy or enthusiasm
Example
After working all day, I completely **ran out of steam**.
idiom

Rite of passage

Meaning
A ceremony or event marking an important stage in someone's life
Example
Graduation is a **rite of passage** for many students.
idiom

rise to the occasion

Meaning
to perform well in a difficult situation
Example
He really **rose to the occasion** during the crisis.
idiom

raise the roof

Meaning
to make a lot of noise; to celebrate loudly
Example
The crowd **raised the roof** when the team won.
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

Risk it for the biscuit

Meaning
To take a risk to achieve something worthwhile.
Example
He knew it was risky, but he decided to **risk it for the biscuit**.
idiom

robotic response

Meaning
an emotionless or mechanical reaction
Example
She gave a **robotic response** during the interview.
idiom

run with it

Meaning
to take an idea and develop it further or act on it
Example
They liked the concept and told us to **run with it**.
idiom

rally the troops

Meaning
to motivate or encourage a group to take action
Example
The manager **rallied the troops** before the big presentation.
idiom

read between the lines

Meaning
to understand the hidden meaning behind something
Example
She said everything was fine, but if you **read between the lines**, you could tell she was upset.
idiom

race to the bottom

Meaning
a situation where companies or countries lower standards to remain competitive
Example
Reducing wages to attract investors can create a **race to the bottom**.
idiom

ring the changes

Meaning
to make changes to something to make it more interesting or effective
Example
The restaurant decided to **ring the changes** with a new menu.
idiom

run a tight ship

Meaning
to manage an organization or group efficiently and strictly
Example
The manager **runs a tight ship**, and everyone follows the rules.
idiom

reinforcement learning

Meaning
a type of machine learning where an agent learns to make decisions by performing actions and receiving feedback
Example
In **reinforcement learning**, the model improves over time as it learns from trial and error.
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

ray of sunshine

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

rule of law

Meaning
the principle that everyone is subject to the law
Example
Democracy depends on the **rule of law**.
idiom

reap what you sow

Meaning
you get the results of your actions, good or bad
Example
If you’re kind to others, you’ll **reap what you sow**.
idiom

ring a bell

Meaning
to sound familiar or remind someone of something
Example
That name **rings a bell**, but I can't remember where I heard it.
idiom

ring in the new year

Meaning
to celebrate the start of a new year
Example
We gathered downtown to **ring in the new year** together.
idiom

ring a bell with someone

Meaning
to sound familiar or remind someone of something
Example
That name doesn't **ring a bell with** me at all.
idiom

runs in the family

Meaning
a trait or quality common among family members
Example
Musical talent **runs in the family**.