Learn the 24 Common American idioms that are used daily in conversations. Americans use idioms all the time in speech, at work, and on TV, so learning the common ones helps you understand and sound natural.
Short answer: An idiom is a phrase whose meaning is different from its individual words. It’s a piece of cake means “it’s easy,” not that someone is serving dessert. Americans use idioms all the time in speech, at work and on TV, so learning the common ones helps you understand and sound natural.
Everyday idioms
| Idiom | Meaning | Example |
|---|---|---|
| break the ice | start a conversation in an awkward situation | He told a joke to break the ice. |
| a piece of cake | very easy | The test was a piece of cake. |
| under the weather | slightly ill | I’m feeling a little under the weather. |
| hit the sack | go to bed | I’m tired. I’m going to hit the sack. |
| call it a day | stop working for the day | Let’s call it a day and finish tomorrow. |
| once in a blue moon | very rarely | We eat out once in a blue moon. |
| cost an arm and a leg | be very expensive | That car costs an arm and a leg. |
| spill the beans | reveal a secret | Don’t spill the beans about the party. |
Idioms for work
| Idiom | Meaning | Example |
|---|---|---|
| get the ball rolling | start something | Let’s get the ball rolling with the first agenda item. |
| on the same page | in agreement; sharing the same understanding | Let’s make sure we’re all on the same page. |
| touch base | briefly contact someone | I’ll touch base with you on Friday. |
| back to the drawing board | start again after a plan fails | The design failed, so it’s back to the drawing board. |
| think outside the box | think creatively | We need to think outside the box to solve this. |
| bite the bullet | do something unpleasant you’ve been avoiding | I decided to bite the bullet and call the dentist. |
| cut corners | do something cheaply or quickly at the cost of quality | The builder cut corners on the roof. |
| the ball is in your court | it is your turn to act or decide | I sent my offer, so the ball is in your court. |
Idioms for feelings, speech and money
| Idiom | Meaning | Example |
|---|---|---|
| over the moon | extremely happy | She was over the moon about the news. |
| feel blue | feel sad | I’ve been feeling blue lately. |
| on cloud nine | very happy | He was on cloud nine after the wedding. |
| beat around the bush | avoid saying the main point | Stop beating around the bush and tell me. |
| bite off more than you can chew | take on too much | I bit off more than I could chew with three jobs. |
| hit the nail on the head | say exactly the right thing | You hit the nail on the head with that comment. |
| let the cat out of the bag | reveal a secret by accident | He let the cat out of the bag about the surprise. |
| break the bank | cost too much money | A movie night won’t break the bank. |
How to learn idioms
- Learn each idiom in a full sentence, not alone.
- Learn 3 to 5 a week and use each one in your own sentence.
- Do not use idioms in formal academic writing or on tests that ask for formal style. They fit conversation, emails to colleagues and informal writing.
- Many of these idioms are also used in British English, but some are more common in American speech.
Take the American idioms quiz
1."The test was a piece of cake." What does it mean?
A piece of cake means something is very easy.
2."I'm feeling under the weather." What does it mean?
Under the weather means slightly ill.
3."Let's break the ice." What does it mean?
Break the ice means to ease the awkwardness at the start of a conversation.
4."That car costs an arm and a leg." What does it mean?
Cost an arm and a leg means to be very expensive.
5."I'll touch base with you on Friday." What does it mean?
Touch base means to contact someone briefly.
6."You hit the nail on the head." What does it mean?
Hit the nail on the head means to be exactly right.
7."Stop beating around the bush." What does it mean?
Beat around the bush means to avoid saying the main point.
8."The plan failed, so it's back to the drawing board." What does it mean?
Back to the drawing board means starting again after a failure.
9."I'm over the moon about my new job." What does it mean?
Over the moon means extremely happy.
10."He let the cat out of the bag." What does it mean?
Let the cat out of the bag means to reveal a secret by accident.
Frequently asked questions
What is an idiom?
An idiom is a phrase whose meaning is different from the literal meaning of its words, such as a piece of cake meaning very easy.
Should I use idioms in formal writing?
Usually not. Idioms fit conversation and informal writing, but formal essays and academic writing generally avoid them.
What is the best way to learn American idioms?
Learn them in full sentences, study a few each week, and practice using them in your own examples.
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