Idioms are fun phrases that mean something different from the actual words inside them. People use them to make their language colorful and exciting when talking to friends and family. In this article, you will learn fifty interesting idioms related to children and childhood.
In this lesson, we’ll look at idioms that mean expressions connected to youth and kids. Let’s get started and explore some of these helpful expressions.
Idioms for Children
1. Child’s play
Definition: Something that is very easy to do.
Used in a Sentence: Solving that basic math quiz was child’s play for the smart student. / Riding a bicycle down the flat sidewalk was child’s play for her.
Similar Expressions: A piece of cake / Easy as ABC
2. Bundle of joy
Definition: A newborn baby that brings happiness to a family.
Used in a Sentence: The proud parents brought their new bundle of joy home from the hospital today. / Everyone smiled when they saw the cute little bundle of joy sleeping in the crib.
Similar Expressions: Sweet baby / Little newcomer
3. Throw a tantrum
Definition: To have a sudden angry outburst or cry loudly because of frustration.
Used in a Sentence: The tired toddler began to throw a tantrum when it was time to leave the park. / He decided to throw a tantrum because he could not get the toy he wanted.
Similar Expressions: Have a fit / Lose one’s cool
4. Like taking candy from a baby
Definition: Something that is extremely simple and requires almost no effort.
Used in a Sentence: Winning the game against the beginner team was like taking candy from a baby. / Fixing that broken clock was like taking candy from a baby for the mechanic.
Similar Expressions: Very simple / Effortless task
5. Like a kid in a candy store
Definition: Extremely excited and happy about your surroundings.
Used in a Sentence: He was like a kid in a candy store when he walked into the massive toy shop. / She acted like a kid in a candy store looking at all the colorful picture books.
Similar Expressions: Overjoyed / Thrilled to pieces
6. Little pitchers have big ears
Definition: Children often listen and pay attention to adult conversations, so people should watch what they say.
Used in a Sentence: Please do not talk about the surprise party here because little pitchers have big ears. / We had to whisper our plans because little pitchers have big ears in this house.
Similar Expressions: Kids hear everything / Careful of listening ears
7. Crybaby
Definition: A person who cries or complains too easily over small problems.
Used in a Sentence: Do not be such a crybaby just because you scraped your knee a little bit. / He acts like a crybaby whenever he loses a friendly game of tag.
Similar Expressions: Whiner / Complainer
8. Knee-high to a grasshopper
Definition: Very young or very short in height.
Used in a Sentence: I have known my best friend since we were knee-high to a grasshopper. / My grandfather planted that tiny tree when I was just knee-high to a grasshopper.
Similar Expressions: Very small / Tiny child
9. Babe in arms
Definition: A very young baby who is small enough to be carried everywhere.
Used in a Sentence: The kind mother traveled on the airplane with a babe in arms. / Holding a babe in arms requires a lot of gentle care and attention.
Similar Expressions: Newborn infant / Tiny baby
10. New kid on the block
Definition: Someone who is completely new to a school, neighborhood, or group.
Used in a Sentence: As the new kid on the block, he felt a little nervous on his first day of class. / She quickly made friends with everyone even though she was the new kid on the block.
Similar Expressions: Fresh face / Newcomer
11. Babe in the woods
Definition: An innocent and inexperienced person who is easily fooled.
Used in a Sentence: On his first day in the big city, he felt like a babe in the woods. / She was a babe in the woods when it came to understanding how computers work.
Similar Expressions: Innocent person / Inexperienced beginner
12. Sleep like a baby
Definition: To sleep very deeply, peacefully, and soundly throughout the night.
Used in a Sentence: After hiking up the big mountain, I went straight to bed and slept like a baby. / The tired puppy curled up on the rug and slept like a baby until morning.
Similar expressions: Sleep soundly / Deep rest
13. Children and fools tell the truth
Definition: Naive people and kids often speak honestly, even when polite adults might hide the facts.
Use in a Sentence: When my little nephew said my painting looked funny, I remembered that children and fools tell the truth. / She did not like her haircut, but children and fools tell the truth about how things look.
Similar Expressions: Kids speak honestly / Truthful remarks
14. Problem child
Definition: A child who frequently causes trouble or misbehaves at home or school.
Used in a Sentence: The teachers worked together to help the problem child focus better during lessons. / He was known as a little problem child because he always started arguments on the playground.
Similar Expressions: Troublesome kid / Mischief maker
15. Ankle-biter
Definition: A playful, humorous way to describe a very small child.
Used in a Sentence: The park was full of loud ankle-biters running around and playing tag. / My little sister is a cute ankle-biter who loves to follow me everywhere.
Similar Expressions: Toddler / Young child
16. Chip off the old block
Definition: A child who looks or acts just like one of their parents.
Used in a Sentence: He loves fixing cars with his dad, just like a true chip off the old block. / Everyone says she is a chip off the old block because she loves to draw like her mother.
Similar Expressions: Just like parent / Family resemblance
17. Wet behind the ears
Definition: Inexperienced, young, and lacking knowledge about how things work.
Used in a Sentence: The new employee is still wet behind the ears and needs extra training. / Do not expect him to know all the rules yet because he is still wet behind the ears.
Similar Expressions: Inexperienced / Green beginner
18. Boys will be boys
Definition: An expression used to excuse noisy or mischievous behavior from children.
Used in a Sentence: They tracked mud all over the clean kitchen floor, but boys will be boys. / Do not worry about their loud shouting outside, because boys will be boys.
Similar Expressions: Kids will play / Natural mischief
19. Born yesterday
Definition: Extremely naive or easily fooled into believing silly things.
Used in a Sentence: You cannot trick me with that obvious joke because I was not born yesterday. / Do you think I was born yesterday and will believe that wild story?
Similar Expressions: Not gullible / Wise to tricks
20. Act your age
Definition: A command telling someone to stop acting childish and behave maturely.
Used in a Sentence: Stop throwing food at the table and please act your age. / You are too old to scream like that, so you need to act your age.
Similar Expressions: Be mature / Grow up
21. Big kid at heart
Definition: An adult who still enjoys playing games and doing fun things that children love.
Used in a Sentence: My uncle loves building massive Lego sets because he is a big kid at heart. / Even though he is an adult, he is a big kid at heart who loves cartoon movies.
Similar Expressions: Playful adult / Youthful spirit
22. Kids stuff
Definition: Something very easy that requires very little skill or effort to finish.
Used in a Sentence: Cleaning up her own bedroom was just kids stuff for her. / Solving those simple puzzles is kids stuff for older students.
Similar Expressions: Simple task / Child play
23. Small fry
Definition: A young child or someone who is unimportant compared to others.
Used in a Sentence: The older basketball players did not want the small fry playing on their court. / He used to be just a small fry in school, but now he is very tall.
Similar Expressions: Little one / Minor person
24. Out of the mouths of babes
Definition: A wise statement spoken unexpectedly by a young child.
Used in a Sentence: When my little daughter said we should share our food, I thought, out of the mouths of babes. / That smart observation came right out of the mouths of babes during our family chat.
Similar Expressions: Wise children / Unexpected wisdom
25. Young at heart
Definition: Having a lively, youthful, and energetic attitude no matter how old you are.
Used in a Sentence: My grandmother loves riding roller coasters because she is young at heart. / Stay positive and keep a young at heart attitude toward life.
Similar Expressions: Youthful mind / Spirited person
26. Cradle robber
Definition: A humorous phrase for someone dating a person much younger than them.
Used in a Sentence: People joked that he was a cradle robber because his wife was younger. / It was just a funny joke about him being a cradle robber at the party.
Similar Expressions: Age gap joke / Older partner
27. Cradle to grave
Definition: Lasting through an entire person’s life from birth until death.
Used in a Sentence: Education programs aim to support citizens from the cradle to the grave. / They lived in the same peaceful mountain village from the cradle to the grave.
Similar Expressions: Lifetime span / Whole life
28. Rock the cradle
Definition: To cause trouble or start a disturbance in a calm situation.
Used in a Sentence: There was no reason to rock the cradle when everyone was getting along so well. / He likes to ask tricky questions just to rock the cradle in class.
Similar Expressions: Stir up trouble / Cause a fuss
29. Go to the cradle
Definition: To return back to the very beginning or origin of a problem.
Used in a Sentence: To solve this mystery, we must go to the cradle of the investigation. / The historians had to go to the cradle of the town to find old records.
Similar Expressions: Start from scratch / Find the origin
30. Raised by wolves
Definition: A funny way to describe someone with bad manners who acts wild.
Used in a Sentence: Close your mouth when you chew food, or people will think you were raised by wolves. / He leaves doors wide open as if he were raised by wolves in the forest.
Similar Expressions: Bad manners / Wild behavior
31. Spoiled brat
Definition: A child who demands everything and behaves poorly when denied.
Used in a Sentence: The spoiled brat screamed loudly until his parents bought him another candy bar. / Nobody wanted to play with him because he acted like a spoiled brat.
Similar Expressions: Demanding child / Ill mannered kid
32. Teacher’s pet
Definition: A student who seeks special favor by always pleasing the teacher.
Used in a Sentence: She always sat in the front row and tried to be the teacher’s pet. / Everyone laughed when he was called the teacher’s pet for handing out papers.
Similar Expressions: Favorite student / Teacher helper
33. Teacher’s plague
Definition: A humorous term for a student who causes lots of trouble in class.
Used in a Sentence: The history instructor jokingly called him the teacher’s plague because of his endless questions. / Managing that classroom full of clever kids felt like handling a teacher’s plague.
Similar Expressions: Classroom pest / Troublemaker
34. Schoolyard bully
Definition: An aggressive child who picks on and hurts smaller kids at school.
Used in a Sentence: The schoolyard bully was told to stay after class for bothering others. / We stood up to the schoolyard bully to protect our younger classmates.
Similar Expressions: Mean kid / Playground tormentor
35. Teacher’s helper
Definition: A helpful student chosen to assist the instructor with daily chores.
Used in a Sentence: She was proud to be the teacher’s helper and carry the books to the desk. / Being the teacher’s helper means watering the classroom plants each morning.
Similar Expressions: Class assistant / Helpful pupil
36. Teacher’s joy
Definition: A polite, hard-working student who makes teaching very enjoyable.
Used in a Sentence: Because he always turned in his homework early, he was the teacher’s joy. / The kind student was a true teacher’s joy during the science project.
Similar Expressions: Model student / Delightful pupil
37. Class clown
Definition: A student who constantly makes jokes to entertain other classmates.
Used in a Sentence: The class clown made everyone laugh during a boring history lecture. / Even though he was the class clown, he always finished his tests on time.
Similar Expressions: Jokester / School joker
38. Teacher’s terror
Definition: A nickname for an energetic student who loves playing pranks.
Used in a Sentence: The substitute instructor found out quickly why he was the teacher’s terror. / He loved making funny faces and acting like the teacher’s terror.
Similar Expressions: Prankster / Mischief maker
39. Playground hero
Definition: A child who does something brave or kind to help others outside.
Used in a Sentence: He became a playground hero after helping a lost puppy find its owner. / She was a true playground hero when she shared her lunch with a new student.
Similar Expressions: Brave kid / Kind classmate
40. Teacher’s ghost
Definition: A student who is so quiet and shy that nobody notices them.
Used in a Sentence: She sat silently in the back corner like a teacher’s ghost all semester. / It is easy to overlook a student who acts like a teacher’s ghost in class.
Similar Expressions: Quiet student / Wallflower
41. Teacher’s shadow
Definition: A student who follows the instructor around everywhere asking questions.
Used in a Sentence: He followed the science teacher around the lab like a loyal teacher’s shadow. / She was always the teacher’s shadow during field trips and museum visits.
Similar Expressions: Constant follower / Eager student
42. Teacher’s light
Definition: A brilliant student who understands new lessons instantly.
Used in a Sentence: She shone brightly in mathematics class like a true teacher’s light. / The clever student was considered the teacher’s light for solving hard problems.
Similar Expressions: Bright scholar / Smart pupil
43. Playground star
Definition: The most popular or athletic child during outdoor recess games.
Used in a Sentence: He scored three goals during soccer and became the playground star. / Everyone wanted to be on the team led by the playground star.
Similar Expressions: Popular kid / Star athlete
44. Teacher’s puzzle
Definition: A bright student whose behavior is hard to figure out.
Used in a Sentence: He got top grades on tests but never spoke, remaining a teacher’s puzzle. / Understanding why she skipped art class was a real teacher’s puzzle.
Similar Expressions: Mystery student / Complex child
45. School spirit
Definition: Enthusiasm and loyalty shown toward your school and classmates.
Used in a Sentence: Wearing the team colors to the game showed great school spirit. / The whole gym cheered with amazing school spirit during the assembly.
Similar Expressions: Team pride / School loyalty
46. Teacher’s treasure
Definition: A deeply kind and honest student who helps everyone succeed.
Used in a Sentence: She always comforted crying classmates, acting like a teacher’s treasure. / The helpful boy was a true teacher’s treasure throughout the entire school year.
Similar Expressions: Wonderful pupil / Precious student
47. Playground judge
Definition: A child who likes to make sure everyone follows the rules during games.
Used in a Sentence: He stood by the swings and acted as the unofficial playground judge. / You can trust the playground judge to keep score fairly during dodgeball.
Similar Expressions: Rule enforcer / Game referee
48. Teacher’s pride
Definition: A student who achieves great success and makes the teacher proud.
Used in a Sentence: Winning the spelling bee made him the teacher’s pride of the month. / She was the teacher’s pride after finishing her science project early.
Similar Expressions: Proud achiever / Successful student
49. Playground leader
Definition: A confident child who organizes games and includes everyone outside.
Used in a Sentence: As a great playground leader, she made sure every kid got a turn. / He stepped up as the playground leader to organize a massive game of kickball.
Similar Expressions: Group captain / Kids coordinator
50. Teacher’s compass
Definition: A reliable student who helps keep the classroom organized and calm.
Used in a Sentence: The teacher relied on her responsible student like a trusty teacher’s compass. / He guided the new students around the halls like a helpful teacher’s compass.
Similar Expressions: Reliable guide / Trusty helper
Exercise to Practice
- Solving that complex puzzle was child’s play for the talented student.
- The newborn baby was a noisy bundle of joy who slept all night quietly.
- She decided to throw a tantrum because she won the first prize trophy.
- Winning the game against the rookie team was like taking candy from a baby.
- He felt like a kid in a candy store when he visited the massive video game shop.
- Little pitchers have big ears, so we should keep our voices down about the surprise.
- Do not act like a crybaby when you win a prize at the school fair.
- I have known my best friend since we were knee-high to a grasshopper.
- The tired mother traveled across town with a tiny babe in arms.
- As the new kid on the block, he felt completely at home immediately without any nerves.
- On his first day in the busy city, he felt like a babe in the woods.
- After running around the track all afternoon, I slept like a baby.
- When my little nephew told the truth about his messy drawing, it proved children and fools tell the truth.
- The problem child always behaved wonderfully and followed every rule without trouble.
- The park was full of loud ankle-biters running around and laughing together.
Answer Key
- True
- False
- False
- True
- True
- True
- False
- True
- True
- False
- True
- True
- True
- False
- True
Conclusion
Learning these idioms about children helps you understand fun expressions that people use every day in conversation. They make your writing and speaking much more colorful and engaging for listeners of all ages.
Try using a few of these expressions when talking with your friends or writing stories this week. Practice makes perfect, and soon you will be using these fun phrases naturally!
Frequently Asked Questions
What are some common idioms for children?
Common idioms about children include child’s play, bundle of joy, and like a kid in a candy store. These phrases describe easy tasks, newborns, or excited people.
Why do we use idioms in English?
We use idioms to make our speech more colorful, creative, and interesting instead of using plain words. They help express big feelings and ideas in short, fun phrases.
What does child’s play mean?
Child’s play means something is very simple and easy to accomplish with little effort. For example, solving an easy puzzle is child’s play for an older student.
How can kids practice learning idioms?
Kids can practice learning idioms by using them in daily sentences, drawing pictures of their literal meanings, and playing matching games. Context and regular use make them easy to remember.
Are idioms about children only used for kids?
No, many children’s idioms can describe adult situations too, such as calling a simple work task child’s play or describing an excited adult as a kid in a candy store.
