Idioms are fun phrases that mean something different from the actual words inside them. People use them to make talking and writing more colorful and exciting. In this article, you will learn fifty fun idioms that are great for kids to know and use every day.
In this lesson, we’ll look at idioms that mean fun and useful things. Let’s get started and explore some of these helpful expressions.
Idioms for Kids
1. Piece of cake
Definition: Something that is very easy to do.
Used in a Sentence: The spelling test was a piece of cake because I studied all night. / Riding my bike without training wheels turned out to be a piece of cake.
Similar Expressions: Easy as pie / Child’s play
2. Break a leg
Definition: A nice way to wish someone good luck before a show or big event.
Used in a Sentence: My mom told me to break a leg right before I walked onto the stage for the school play. / We cheered for our soccer team and shouted break a leg before the game started.
Similar Expressions: Good luck / Best of luck
3. Under the weather
Definition: Feeling a little bit sick or tired.
Used in a Sentence: I stayed home from school today because I was feeling a bit under the weather. / My puppy is resting on the couch because he seems under the weather.
Similar Expressions: Feeling sick / Under the par
4. Hit the hay
Definition: To go to sleep or go to bed.
Used in a Sentence: I was so tired after playing outside all day that I was ready to hit the hay early. / My dad told us to brush our teeth and hit the hay so we wake up fresh.
Similar Expressions: Go to bed / Hit the sack
5. Spill the beans
Definition: To share a secret by accident.
Used in a Sentence: Liam accidentally spilled the beans about the surprise birthday party for our teacher. / Please do not spill the beans about where we are hiding the prize.
Similar Expressions: Let the cat out of the bag / Give the secret away
6. Cold feet
Definition: Being nervous or scared about doing something new.
Used in a Sentence: Sam got cold feet right before jumping off the high diving board at the pool. / Do not get cold feet now that it is your turn to give the speech.
Similar Expressions: Getting nervous / Getting scared
7. Cost an arm and a leg
Definition: When something is way too expensive.
Used in a Sentence: I wanted to buy the giant teddy bear, but it cost an arm and a leg. / Those new light-up sneakers cost an arm and a leg, so I saved my allowance instead.
SimilarExpressions: Very expensive / Super costly
8. On the ball
Definition: Being very quick, smart, and ready for action.
Used in a Sentence: Our goalie was really on the ball and stopped every single shot during soccer practice. / You have to be on the ball to catch all the questions in the quiz game.
Similar Expressions: Sharp and ready / Wide awake
9. Once in a blue moon
Definition: Something that happens very rarely.
Used in a Sentence: We only get to eat ice cream for breakfast once in a blue moon as a special treat. / Snow falls in our town only once in a blue moon.
Similar Expressions: Very rarely / Hardly ever
10. Butterflies in my stomach
Definition: Feeling nervous or excited butterflies fluttering inside your tummy.
Used in a Sentence: I had butterflies in my stomach while waiting for my turn to read my poem aloud. / Walking onto the roller coaster gave me huge butterflies in my stomach.
Similar Expressions: Feeling jittery / Nervous tummy
11. Hold your horses
Definition: Telling someone to wait and be patient.
Used in a Sentence: Hold your horses before you run outside, because you forgot your jacket. / Hold your horses and let me finish explaining the rules of the game.
Similar Expressions: Wait a minute / Slow down
12. Couch potato
Definition: Someone who watches too much television and does not exercise.
Used in a Sentence: On rainy weekends, my brother turns into a couch potato watching cartoons all day. / Let us go outside to play tag instead of sitting inside like couch potatoes.
Similar Expressions: Lazybones / TV lover
13. A bookworm
Definition: A person who loves to read books all the time.
Used in a Sentence: Maya is such a bookworm that she finishes three chapter books every single week. / If you are a bookworm, the school library is definitely your favorite room.
Similar Expressions: Avid reader / Library fan
14. Easy as pie
Definition: Something that takes very little effort to finish.
Used in a Sentence: Tying my shoelaces used to be hard, but now it is as easy as pie. / Cleaning up my toys after playing is as easy as pie when you sing a song.
Similar Expressions: Very simple / A breeze
15. All ears
Definition: Listening very carefully to what someone is saying.
Used in a Sentence: Tell me all about your trip to the zoo because I am all ears. / When the teacher started sharing the secret project, the whole class was all ears.
Similar Expressions: Listening closely / Ready to hear
16. Butter someone up
Definition: Being extra nice to someone so they will do what you want.
Used in a Sentence: Leo tried to butter up his dad by cleaning the kitchen before asking for a new toy. / Do not try to butter me up with compliments just to borrow my colored markers.
Similar Expressions: Flatter someone / Sweet talk
17. A copycat
Definition: Someone who copies what another person says or does.
Used in a Sentence: Wear a different shirt so people do not think we are trying to be copycats today. / Stop being a copycat and draw your own unique picture of a rocket ship.
Similar Expressions: Mimic / Imitator
18. Down to earth
Definition: Being friendly, humble, and easy to talk to.
Used in a Sentence: Even though she is the star soccer player, she is very down to earth with everyone. / Our new art teacher is so down to earth and makes every student feel welcome.
Similar Expressions: Humble and nice / Friendly person
19. Hit the road
Definition: To leave or start a journey somewhere.
Used in a Sentence: Pack your backpacks because it is time to hit the road for our camping trip. / We need to hit the road early if we want to beat the traffic to Grandma’s house.
Similar Expressions: Leave now / Head out
20. In hot water
Definition: Being in trouble for doing something wrong.
Used in a Sentence: Tom was in hot water with the teacher for drawing silly faces on his desk. / If you do not finish your chores, you will be in hot water with mom.
Similar Expressions: In trouble / Facing punishment
21. Lend a hand
Definition: To help someone with a task or chore.
Used in a Sentence: Can you lend a hand carrying these heavy grocery bags into the house? / My best friend always likes to lend a hand when I struggle with math homework.
Similar Expressions: Give help / Assist someone
22. Snug as a bug
Definition: Feeling very cozy, warm, and comfortable.
Used in a Sentence: Wrapped in my thick wool blanket, I was as snug as a bug on a freezing night. / The tiny kitten fell asleep in the warm laundry basket, snug as a bug.
Similar Expressions: Cozy and warm / Safe and snug
23. A fish out of water
Definition: Feeling uncomfortable because you do not belong in a place.
Used in a Sentence: On my first day at the giant new school, I felt like a fish out of water. / Wearing a winter coat to the beach made me feel like a fish out of water.
Similar Expressions: Out of place / Uncomfortable stranger
24. A green thumb
Definition: Being very good at growing plants and flowers.
Used in a Sentence: Grandma has a green thumb because her backyard garden always blooms with colorful roses. / If you want your tomato plant to grow tall, you must have a green thumb.
Similar Expressions: Good gardener / Plant lover
25. Head in the clouds
Definition: Daydreaming and not paying attention to what is happening around you.
Used in a Sentence: Wake up from your daydream and stop walking around with your head in the clouds. / She missed the instruction because her head was in the clouds thinking about recess.
Similar Expressions: Daydreaming / Not paying attention
26. A sweet tooth
Definition: A strong love for eating sugary foods and candy.
Used in a Sentence: I always save room for dessert after dinner because I have a big sweet tooth. / Bake sale brownies are dangerous for anyone who has a sweet tooth like me.
Similar Expressions: Love for sweets / Sugar lover
27. Two peas in a pod
Definition: Two people who look or act exactly alike.
Used in a Sentence: Those twin sisters share every hobby and dress the same, like two peas in a pod. / My dog and I love taking naps together, we are like two peas in a pod.
Similar Expressions: Very similar / Best buddies
28. Blessing in disguise
Definition: Something that seems bad at first but turns out well later.
Used in a Sentence: Breaking my skateboard was a blessing in disguise because it led me to try painting instead. / Missing the morning bus was a blessing in disguise since it saved us from the heavy rainstorm.
Similar Expressions: Hidden good turn / Lucky break
29. Burning the midnight oil
Definition: Working or studying late into the night.
Used in a Sentence: The science fair champion spent the whole week burning the midnight oil to finish her robot. / I had to burn the midnight oil to complete my history project before the morning deadline.
Similar Expressions: Working late / Staying up late
30. Cut corners
Definition: Doing something the easy or sloppy way to save time.
Used in a Sentence: Do not cut corners when cleaning your room, or mom will make you do it again. / If you cut corners on your math homework, you will make silly mistakes on the test.
Similar Expressions: Take shortcuts / Do a sloppy job
31. Every cloud has a silver lining
Definition: Every bad situation has some good part to it.
Used in a Sentence: Our baseball game was canceled due to rain, but every cloud has a silver lining because we got to bake cookies. / Do not worry about losing the game, remember that every cloud has a silver lining.
Similar Expressions: Look on the bright side / Good in every bad
32. Get out of hand
Definition: When a situation becomes wild and impossible to control.
Used in a Sentence: The pillow fight in the living room started getting out of hand very fast. / Teacher had to calm the classroom down before the noise got completely out of hand.
Similar Expressions: Get out of control / Become too wild
33. Give someone the cold shoulder
Definition: Ignoring someone on purpose because you are upset with them.
Used in a Sentence: After our silly argument, she gave me the cold shoulder all afternoon at school. / It is not nice to give your friends the cold shoulder when they want to play with you.
Similar Expressions: Ignore someone / Give the silent treatment
34. Go the extra mile
Definition: Putting in extra effort to do a wonderful job.
Used in a Sentence: Our teacher always goes the extra mile to make learning fun with cool games. / If you want to win the art contest, you need to go the extra mile with your details.
Similar Expressions: Work extra hard / Do more than required
35. Hang in there
Definition: Telling someone not to give up when things get hard.
Used in a Sentence: Learning to ride a skateboard is tough at first, but just hang in there and keep trying. / Hang in there, the school week is almost over and the weekend is coming.
Similar Expressions: Keep going / Don’t give up
36. Have a blast
Definition: To have an amazing time doing something fun.
Used in a Sentence: We had an absolute blast riding the giant roller coasters at the amusement park. / I hope you have a blast at your birthday party this Saturday afternoon.
Similar Expressions: Have fun / Enjoy greatly
37. Hear it through the grapevine
Definition: Learning a secret or rumor from someone else talking.
Used in a Sentence: I heard it through the grapevine that we are getting pizza for lunch today. / Did you actually see the puppy, or did you just hear it through the grapevine?
Similar Expressions: Heard a rumor / Word of mouth
38. Jump on the bandwagon
Definition: Joining an activity because everyone else is doing it.
Used in a Sentence: When all my friends started playing the new video game, I decided to jump on the bandwagon. / Do not just jump on the bandwagon unless you truly enjoy the activity.
Similar Expressions: Follow the crowd / Join the trend
39. Keep your chin up
Definition: Staying positive and cheerful during hard times.
Used in a Sentence: Keep your chin up even though we lost the soccer game today. / My dad told me to keep your chin up when I scraped my knee on the pavement.
Similar Expressions: Stay positive / Cheer up
40. Know something inside out
Definition: Understanding a subject or game completely.
Used in a Sentence: He knows the rules of Pokémon inside out because he plays every single day. / She practiced the piano song until she knew every note inside out.
Similar Expressions: Know thoroughly / Master completely
41. Leave no stone unturned
Definition: Looking everywhere possible to find something lost.
Used in a Sentence: We left no stone unturned while searching for my missing house key in the yard. / Detective duck left no stone unturned to solve the mystery of the missing cookie.
Similar Expressions: Search everywhere / Look high and low
42. Let sleeping dogs lie
Definition: Leaving an old argument alone so it does not cause trouble again.
Used in a Sentence: We decided to let sleeping dogs lie instead of arguing about who broke the toy last week. / It is better to let sleeping dogs lie than bring up past mistakes.
Similar Expressions: Leave it alone / Don’t stir things up
43. Make waves
Definition: Causing trouble or making a big fuss about something.
Used in a Sentence: Just follow the quiet classroom rules and try not to make waves today. / She likes to make waves whenever she disagrees with the board game choices.
Similar Expressions: Cause trouble / Rock the boat
44. Miss the boat
Definition: Missing out on a great chance or opportunity.
Used in a Sentence: If you do not sign up for the field trip today, you will miss the boat entirely. / Hurry up and buy the discounted toy tickets before you miss the boat.
Similar Expressions: Lose the chance / Be too late
45. On cloud nine
Definition: Feeling extremely happy and full of joy.
Used in a Sentence: When I found out we won first place in the science fair, I was on cloud nine. / Winning a brand new bicycle put my little brother on cloud nine.
Similar Expressions: Over the moon / Extremely happy
46. Out of the blue
Definition: Happening suddenly and without any warning.
Used in a Sentence: A tiny frog jumped out of the blue from underneath the garden hose. / My friend called me out of the blue to ask if I wanted to ride bikes.
Similar Expressions: Suddenly / Out of nowhere
47. Pull someone’s leg
Definition: Teasing someone by telling a funny joke that is not true.
Used in a Sentence: Do not believe his crazy story about a talking dinosaur, he is just pulling your leg. / I was only pulling your leg when I said school was canceled on Saturday.
Similar Expressions: Tease someone / Joke around
48. Raining cats and dogs
Definition: Raining very heavily outside.
Used in a Sentence: We had to cancel our outdoor picnic because it started raining cats and dogs. / Look at the dark storm clouds, it is definitely raining cats and dogs out there.
Similar Expressions: Pouring rain / Heavy rainfall
49. Through thick and thin
Definition: Staying loyal to someone through good times and bad times.
Used in a Sentence: My best friend and I have stuck together through thick and thin since kindergarten. / A true pet will love you through thick and thin no matter what happens.
Similar Expressions: Through good and bad / Always loyal
50. Wild goose chase
Definition: A foolish and useless search for something you cannot find.
Used in a Sentence: Searching for the invisible monster in the closet turned out to be a wild goose chase. / The wrong map sent us on a wild goose chase all over the neighborhood.
Similar Expressions: Useless search / Waste of time
Exercise to Practice
- The spelling test was a piece of cake because I did not study at all.
- My mom told me to break a leg right before I walked onto the stage for the school play.
- I stayed home from school today because I was feeling a bit under the weather.
- My dog was so full of energy that he wanted to hit the hay at noon.
- Liam accidentally spilled the beans about the surprise birthday party for our teacher.
- Do not get cold feet now that it is your turn to give the speech in front of the class.
- I wanted to buy the giant teddy bear, but it cost an arm and a leg.
- Our goalie was sleeping and completely on the ball when the ball rolled past him.
- Snow falls in our town every single day, just once in a blue moon.
- Walking onto the big roller coaster gave me huge butterflies in my stomach.
- Hold your horses before you run outside, because you forgot your warm jacket.
- On rainy weekends, my brother turns into a couch potato watching cartoons all day.
- Maya is such a bookworm that she finishes three chapter books every single week.
- Tying my shoelaces used to be hard, but now it is as easy as pie.
- Tell me all about your trip to the zoo because I am all ears.
Answer Key
- False
- True
- True
- False
- True
- True
- True
- False
- False
- True
- True
- True
- True
- True
- True
Conclusion
Learning these idioms helps kids understand fun expressions used in stories, movies, and everyday conversations with friends. Practicing them makes your writing much more exciting and creative.
Try using a few of these fun phrases when you talk to your family or write stories at school today. You will see how much fun language can be!
Frequently Asked Questions
What are some common idioms for kids?
Some common idioms for kids include piece of cake, break a leg, and under the weather. These phrases use everyday objects to express feelings or situations in a fun way.
Why do we use idioms in English?
We use idioms to make our speech and writing more colorful, interesting, and descriptive. Instead of saying something is easy, saying it is a piece of cake paints a fun picture in your mind.
How can kids learn idioms easily?
Kids can learn idioms easily by connecting them to everyday activities, reading storybooks, and practicing them in fun sentences. Playing matching games or quizzes also helps them remember what each phrase means.
Are idioms hard to understand?
Idioms can be tricky at first because you cannot figure out their meaning just by looking at the individual words. Once you learn the backstory and practice with examples, they become very easy to understand and use.
Can I use idioms in school writing?
Yes, you can use idioms in creative writing stories and classroom projects to make your writing stand out. Just make sure you use them correctly so your readers know what you mean.
