50 Idioms for Kid With Meanings & Sentences
Idioms for Kid
1. Act like a kid in a candy store
Meaning: To be extremely excited and enthusiastic.
In a Sentence: At the amusement park, Tommy acted like a kid in a candy store.
Other Ways to Say: Overjoyed, thrilled, super excited
2. Child’s play
Meaning: Something very easy to do.
In a Sentence: Solving that puzzle was child’s play for Emma.
Other Ways to Say: A piece of cake, easy-peasy, not rocket science
3. Bundle of joy
Meaning: A newborn baby or a very happy child.
In a Sentence: Their baby girl is truly a bundle of joy.
Other Ways to Say: Little angel, sweet baby, precious one
4. Full of beans
Meaning: Very energetic and lively.
In a Sentence: The kids were full of beans after eating all that candy.
Other Ways to Say: Bouncing off the walls, hyperactive, full of energy
5. Break the news
Meaning: To inform someone about something important or significant.
In a Sentence: Sarah had to break the news to her little brother that they were moving to a new city.
Other Ways to Say: To let someone know, To share the news
6. Bright-eyed and bushy-tailed
Meaning: Very eager and full of energy.
In a Sentence: The children came to school bright-eyed and bushy-tailed.
Other Ways to Say: Enthusiastic, eager, full of life
7. As innocent as a lamb
Meaning: Completely innocent and pure.
In a Sentence: She looked as innocent as a lamb when questioned about the mess.
Other Ways to Say: Guilt-free, pure-hearted, angelic
8. Monkey see, monkey do
Meaning: Imitating without understanding.
In a Sentence: Kids often act based on monkey see, monkey do behavior.
Other Ways to Say: Copycat, imitate blindly, mimic
9. Knee-high to a grasshopper
Meaning: Very young or small.
In a Sentence: I’ve known him since he was knee-high to a grasshopper.
Other Ways to Say: Tiny tot, little one, small fry
10. Wet behind the ears
Meaning: Inexperienced or naive.
In a Sentence: He’s still wet behind the ears when it comes to decision-making.
Other Ways to Say: Green, newbie, just learning
11. Have ants in your pants
Meaning: Unable to sit still due to excitement or nervousness.
In a Sentence: The kids had ants in their pants waiting for the cake.
Other Ways to Say: Restless, fidgety, jittery
12. Go out to play
Meaning: To engage in playful outdoor activities.
In a Sentence: After homework, the kids were allowed to go out to play.
Other Ways to Say: Outdoor fun, time for games, get some air
13. Like taking candy from a baby
Meaning: Something that is very easy to do.
In a Sentence: Winning that game was like taking candy from a baby.
Other Ways to Say: A breeze, no challenge, effortless
14. Throw a tantrum
Meaning: Sudden outburst of anger or frustration.
In a Sentence: The toddler threw a tantrum when told no.
Other Ways to Say: Melt down, lose it, fit of rage
15. Have a sweet tooth
Meaning: Love for sweet food.
In a Sentence: Every kid I know has a sweet tooth.
Other Ways to Say: Sugar lover, dessert fan, candy craving
16. Big baby
Meaning: Someone who overreacts or is very emotional.
In a Sentence: Don’t be such a big baby about a little scrape.
Other Ways to Say: Crybaby, overdramatic, sensitive
17. Babes in the woods
Meaning: Innocent and unaware of danger.
In a Sentence: The new students were like babes in the woods on their first day.
Other Ways to Say: Naive, clueless, inexperienced
18. Play nice
Meaning: To behave well with others.
In a Sentence: The teacher reminded the kids to play nice during recess.
Other Ways to Say: Be kind, get along, share nicely
19. Schoolboy error
Meaning: A basic or silly mistake.
In a Sentence: It was a schoolboy error to forget his backpack at home.
Other Ways to Say: Rookie mistake, careless slip, beginner’s error
20. Big fish in a small pond
Meaning: Someone important in a small group.
In a Sentence: He’s a big fish in a small pond at his school.
Other Ways to Say: Local star, main character, top dog
21. Child at heart
Meaning: An adult who enjoys childlike things.
In a Sentence: Even at 40, he’s a child at heart who loves cartoons.
Other Ways to Say: Playful adult, youthful spirit, kid inside
22. It’s past your bedtime
Meaning: Time to go to sleep.
In a Sentence: Don’t forget it’s past your bedtime, little one.
Other Ways to Say: Time to sleep, bedtime, lights out
23. Curiosity killed the cat
Meaning: Being too curious can lead to trouble.
In a Sentence: Telling kids “curiosity killed the cat” often stops too many questions.
Other Ways to Say: Don’t poke around, mind your business, be careful
24. Grow up
Meaning: To mature or act more responsibly.
In a Sentence: It’s time for you to grow up and do your homework.
Other Ways to Say: Be mature, act your age, stop being childish
25. Bundle of mischief
Meaning: A playful or naughty child.
In a Sentence: Their son is a bundle of mischief but very lovable.
Other Ways to Say: Troublemaker, rascal, cheeky child
26. Throw toys out of the pram
Meaning: To overreact or have a tantrum.
In a Sentence: He threw his toys out of the pram when he didn’t get a second helping.
Other Ways to Say: Flip out, act out, sulk
27. Act your age
Meaning: Behave more maturely.
In a Sentence: Stop whining and act your age.
Other Ways to Say: Be mature, stop acting childish, behave properly
28. Take candy from a baby
Meaning: Extremely easy task.
In a Sentence: Fixing that toy was like taking candy from a baby.
Other Ways to Say: Child’s play, easy work, no challenge
29. Like a bull in a china shop
Meaning: Clumsy or reckless behavior.
In a Sentence: That little boy runs around like a bull in a china shop.
Other Ways to Say: Clumsy, all over the place, rough
30. Act up
Meaning: Misbehave or cause trouble.
In a Sentence: The kids began to act up during the long car ride.
Other Ways to Say: Be naughty, misbehave, cause a scene
31. Small fry
Meaning: A young or unimportant person.
In a Sentence: He may be small fry now, but he has big potential.
Other Ways to Say: Little one, minor, junior
32. A chip off the old block
Meaning: Resembling one’s parent.
In a Sentence: He’s a chip off the old block, just like his dad.
Other Ways to Say: Just like his parent, similar genes, family traits
33. Run around like a headless chicken
Meaning: To act in a panic or without direction.
In a Sentence: Before the party, the kids ran around like headless chickens.
Other Ways to Say: In chaos, no direction, disorganized
34. Put in a timeout
Meaning: Temporary punishment for misbehavior.
In a Sentence: He was put in a timeout for throwing toys.
Other Ways to Say: Time off, punishment break, take a pause
35. On your best behavior
Meaning: Acting very well and properly.
In a Sentence: Be on your best behavior at grandma’s house.
Other Ways to Say: Be polite, behave nicely, show manners
36. Have a big mouth
Meaning: Talk too much or spill secrets.
In a Sentence: My little sister has a big mouth and told everyone my surprise.
Other Ways to Say: Blabbermouth, chatterbox, talk too much
37. Like herding cats
Meaning: Hard to control a group.
In a Sentence: Managing a class of preschoolers is like herding cats.
Other Ways to Say: Unmanageable, chaotic, disorganized
38. Sleep like a baby
Meaning: Sleep very peacefully.
In a Sentence: After playing all day, she slept like a baby.
Other Ways to Say: Deep sleep, soundly sleep, restfully
39. Spit image
Meaning: Exact likeness.
In a Sentence: He’s the spitting image of his father.
Other Ways to Say: Lookalike, twin, carbon copy
40. Cry wolf
Meaning: Give a false alarm.
In a Sentence: Don’t cry wolf too often or no one will believe you.
Other Ways to Say: False alert, exaggerate, lie for attention
41. Tattle-tale
Meaning: Someone who tells on others.
In a Sentence: No one likes a tattle-tale in school.
Other Ways to Say: Snitch, informer, tell-all
42. Time-out corner
Meaning: A place for punishment or reflection.
In a Sentence: The naughty kid was sent to the time-out corner.
Other Ways to Say: Quiet time, discipline spot, thinking zone
43. Silly goose
Meaning: Playful or silly child.
In a Sentence: You’re such a silly goose jumping around like that!
Other Ways to Say: Goofball, funny kid, clown
44. Run wild
Meaning: Be uncontrolled.
In a Sentence: The children ran wild at the birthday party.
Other Ways to Say: Get out of control, let loose, go crazy
45. Apple of their eye
Meaning: A beloved child.
In a Sentence: Their daughter is the apple of their eye.
Other Ways to Say: Dearest one, precious, darling
46. Toy with the idea
Meaning: To consider something lightly.
In a Sentence: The boy toyed with the idea of skipping homework.
Other Ways to Say: Think about it, consider, ponder
47. Like a sponge
Meaning: Absorb information quickly.
In a Sentence: Kids at that age are like sponges, soaking up everything.
Other Ways to Say: Quick learner, sharp, absorbent
48. Get grounded
Meaning: Be punished by being restricted.
In a Sentence: He got grounded for staying out late.
Other Ways to Say: Restricted, under punishment, disciplined
49. A nose in every corner
Meaning: Very curious child.
In a Sentence: That kid has a nose in every corner of the house.
Other Ways to Say: Inquisitive, nosy, curious
50. Like two peas in a pod
Meaning: Two kids who are very close or similar.
In a Sentence: Those twins are like two peas in a pod.
Other Ways to Say: Close bond, inseparable, best friends
