Cats appear in many common English idioms. These expressions can describe secrecy, curiosity, fear, success, trouble, money, and behavior.
If you are learning English, knowing these idioms can help you understand everyday conversations, books, films, and social media.
Some cat idioms are very common, such as “cat got your tongue?” and “let the cat out of the bag.” Others, such as “the cat’s whiskers,” are more informal or old-fashioned.
This guide explains 26 established cat idioms in simple English, with meanings, usage notes, and natural examples.
Quick Answer
Common cat idioms include “cat got your tongue?” for asking why someone is silent, “let the cat out of the bag” for revealing a secret, and “curiosity killed the cat” for warning against unnecessary curiosity. Other useful expressions include “raining cats and dogs,” “copycat,” “cat nap,” “fat cat,” and “fight like cats and dogs.”
What Are Cat Idioms?
Cat idioms are established English expressions that contain the word cat or refer to cats. Their meanings are often different from the literal meaning of the words. For example, “spill the beans” is about revealing information, while “let the cat out of the bag” also means to reveal a secret. These idioms are common in informal English.
Quick Overview
| # | Cat Idiom | Short Meaning | Suitable Context |
|---|---|---|---|
| 1 | Cat got your tongue? | Why are you silent? | Casual conversation |
| 2 | Let the cat out of the bag | Reveal a secret | Casual situations |
| 3 | Curiosity killed the cat | Too much curiosity can cause trouble | Advice/warnings |
| 4 | Raining cats and dogs | Raining very heavily | Casual conversation |
| 5 | Fight like cats and dogs | Argue or fight often | People or animals |
| 6 | Copycat | Someone who copies another | School, work, casual |
| 7 | Scaredy-cat | A very fearful person | Informal |
| 8 | Fat cat | A rich or powerful person | Informal, often critical |
| 9 | Cool cat | A stylish, confident person | Informal |
| 10 | Cat’s whiskers | Someone or something excellent | Informal |
| 11 | Cat’s pajamas | Someone or something excellent | Informal |
| 12 | Cat nap | A short sleep | Everyday conversation |
| 13 | When the cat’s away, the mice will play | People misbehave when supervision is absent | Informal |
| 14 | Play cat and mouse | Chase or deceive someone | Stories, conflict |
| 15 | There’s more than one way to skin a cat | There are several ways to solve a problem | Problem-solving |
| 16 | No room to swing a cat | Very little space | Casual description |
| 17 | Look what the cat dragged in | Greeting an unexpected person | Humorous/informal |
| 18 | Like something the cat dragged in | Looking very untidy | Informal |
| 19 | Grin like a Cheshire cat | Smile very widely | Informal |
| 20 | See which way the cat jumps | Wait to see what happens | Decisions |
| 21 | Bell the cat | Take a risky task or responsibility | Formal/informal discussion |
| 22 | Put the cat among the pigeons | Cause trouble or shock | British English |
| 23 | Have nine lives | Survive dangerous situations | Informal |
| 24 | There isn’t a cat in hell’s chance | No chance at all | Informal |
| 25 | Like herding cats | Try to control a difficult group | Work/group situations |
| 26 | Cat’s-paw | A person used by another | Critical/formal contexts |
26 Useful Idioms for Cats
1. Cat Got Your Tongue?
Meaning:
“Cat got your tongue?” is used when someone is unusually silent or does not answer a question.
When to Use:
Use it in casual and playful conversations. It can sound teasing, so avoid it when someone is upset or uncomfortable.
Examples:
- “You were talking all morning. Cat got your tongue now?”
- The teacher asked Tom a question, but he said nothing. “Cat got your tongue?” she asked.
2. Let the Cat Out of the Bag
Meaning:
To let the cat out of the bag means to accidentally or deliberately reveal a secret.
When to Use:
Use it when someone tells information that was supposed to remain private.
Examples:
- Sara let the cat out of the bag about the surprise party.
- I wanted to keep the new job secret, but my brother let the cat out of the bag.
3. Curiosity Killed the Cat
Meaning:
This idiom warns that too much curiosity can lead to trouble.
When to Use:
Use it when someone is asking too many questions or trying to discover something that may cause problems.
Examples:
- “Don’t open that box. Curiosity killed the cat.”
- Ahmed kept checking his friend’s private messages, but curiosity killed the cat.
4. Raining Cats and Dogs
Meaning:
If it is raining cats and dogs, it is raining very heavily.
When to Use:
This is an informal way to describe heavy rain.
Examples:
- We cannot play cricket today. It is raining cats and dogs.
- I forgot my umbrella, and it started raining cats and dogs on my way home.
5. Fight Like Cats and Dogs
Meaning:
To fight like cats and dogs means to argue or fight frequently.
When to Use:
It is often used for people who regularly disagree, especially siblings, couples, or close friends.
Examples:
- My two brothers fight like cats and dogs.
- The neighbors fight like cats and dogs over small things.
6. Copycat
Meaning:
A copycat is someone who copies another person’s actions, ideas, style, or work.
When to Use:
Use it in informal situations. It can sound critical.
Examples:
- “Stop being a copycat and make your own drawing.”
- The company was accused of being a copycat because its product looked almost the same.
7. Scaredy-Cat
Meaning:
A scaredy-cat is a person who is easily frightened.
When to Use:
It is mainly used in informal and playful speech, often with children or friends.
Examples:
- “Come on, scaredy-cat! It is only a small spider.”
- Ali would not enter the dark room because he was being a scaredy-cat.
8. Fat Cat
Meaning:
A fat cat is a rich or powerful person, especially someone who has a lot of influence.
When to Use:
It is usually informal and can have a negative or critical tone.
Examples:
- The article criticized the fat cats who controlled the company.
- Several political fat cats attended the private event.
9. Cool Cat
Meaning:
A cool cat is a person who seems stylish, confident, calm, or impressive.
When to Use:
This is informal and can sound playful or old-fashioned.
Examples:
- Jake always wears great clothes. He is a real cool cat.
- Everyone wanted to meet the cool cat playing guitar at the party.
10. The Cat’s Whiskers
Meaning:
If someone or something is the cat’s whiskers, they are considered excellent or very impressive.
When to Use:
Use this informal expression when praising someone or something. It may sound slightly old-fashioned.
Examples:
- She thinks her new phone is the cat’s whiskers.
- After winning the competition, he felt like the cat’s whiskers.
11. The Cat’s Pajamas
Meaning:
The cat’s pajamas means someone or something is excellent, impressive, or special.
When to Use:
It is informal and often playful.
Examples:
- This new restaurant is the cat’s pajamas.
- Nina thinks her new bicycle is the cat’s pajamas.
12. Cat Nap
Meaning:
A cat nap is a short sleep, usually during the day.
When to Use:
Use it in everyday conversations about taking a brief rest.
Examples:
- I am tired, so I am going to take a quick cat nap.
- Dad took a cat nap after lunch before returning to work.
13. When the Cat’s Away, the Mice Will Play
Meaning:
This means people may misbehave or enjoy themselves more freely when the person in charge is absent.
When to Use:
Use it in casual situations involving teachers, managers, parents, or other people who supervise others.
Examples:
- The students started talking as soon as the teacher left. When the cat’s away, the mice will play.
- The workers relaxed when the manager went home early. When the cat’s away, the mice will play.
14. Play Cat and Mouse
Meaning:
To play cat and mouse means to repeatedly chase, avoid, trick, or outsmart someone.
When to Use:
It can describe physical chasing or a situation where two sides keep trying to gain an advantage.
Examples:
- The police played cat and mouse with the escaped criminal.
- The two companies have been playing cat and mouse over the new market.
15. There’s More Than One Way to Skin a Cat
Meaning:
This expression means there is more than one way to solve a problem or achieve a goal.
When to Use:
It is usually used when discussing different methods. The wording can sound harsh or unpleasant because of its literal image, so “there is more than one way to solve this” may be better in sensitive settings.
Examples:
- We do not need to use that method. There is more than one way to skin a cat.
- The first plan failed, but there is more than one way to skin a cat.
16. No Room to Swing a Cat
Meaning:
If there is no room to swing a cat, a place is extremely small or crowded.
When to Use:
Use it as an informal way to describe a very small room or space.
Examples:
- My old apartment was so tiny that there was no room to swing a cat.
- The storage room is packed with boxes; there is no room to swing a cat.
17. Look What the Cat Dragged In
Meaning:
“Look what the cat dragged in!” is a humorous way to greet someone who has just arrived, especially someone who looks messy or has appeared unexpectedly.
When to Use:
Use it only in informal situations with people who understand the joke.
Examples:
- “Well, look what the cat dragged in! I haven’t seen you for months.”
- When his muddy friend arrived, he laughed and said, “Look what the cat dragged in!”
18. Like Something the Cat Dragged In
Meaning:
To look like something the cat dragged in means to look very untidy, dirty, or disheveled.
When to Use:
This is informal and can sound insulting, so use it carefully.
Examples:
- After working in the garden all morning, I looked like something the cat dragged in.
- He arrived at the party looking like something the cat dragged in after walking through the rain.
19. Grin Like a Cheshire Cat
Meaning:
To grin like a Cheshire cat means to smile very widely, often because you are pleased with yourself.
When to Use:
Use it when someone’s smile is especially large or obvious.
Examples:
- She was grinning like a Cheshire cat after getting the highest mark.
- He came home grinning like a Cheshire cat because he had won the match.
20. See Which Way the Cat Jumps
Meaning:
To see which way the cat jumps means to wait and watch what happens before making a decision.
When to Use:
Use it when someone wants more information before choosing what to do.
Examples:
- I will wait and see which way the cat jumps before accepting the offer.
- The team is watching the market to see which way the cat jumps.
21. Bell the Cat
Meaning:
To bell the cat means to agree that something difficult or dangerous should be done but face the problem of finding someone willing to do it.
When to Use:
It is useful when discussing a risky task or difficult responsibility. It is less common in everyday speech.
Examples:
- Everyone agreed that the old system needed to change, but who would bell the cat?
- The committee knew someone had to challenge the decision, but nobody wanted to bell the cat.
22. Put the Cat Among the Pigeons
Meaning:
To put the cat among the pigeons means to cause trouble, confusion, or shock by doing or saying something unexpected.
When to Use:
This expression is especially common in British English.
Examples:
- His sudden announcement put the cat among the pigeons at the meeting.
- Publishing the secret report really put the cat among the pigeons.
23. Have Nine Lives
Meaning:
Someone who has nine lives seems to survive many dangerous situations or problems.
When to Use:
It is usually used humorously when someone escapes harm repeatedly.
Examples:
- That driver has nine lives after surviving so many accidents.
- Our cat has nine lives; it has escaped from the garden countless times.
24. Not Have a Cat in Hell’s Chance
Meaning:
If someone doesn’t have a cat in hell’s chance, they have almost no chance of succeeding.
When to Use:
This is informal and can sound strong. Avoid it in polite formal writing.
Examples:
- Without more practice, I don’t have a cat in hell’s chance of winning.
- The small team doesn’t have a cat in hell’s chance against the champions.
25. Like Herding Cats
Meaning:
Like herding cats describes a task that is extremely difficult because the people involved are independent, uncooperative, or hard to control.
When to Use:
It is useful for groups, meetings, projects, and teamwork.
Examples:
- Organizing five young children was like herding cats.
- Getting everyone to agree on the project plan was like herding cats.
26. Cat’s-Paw
Meaning:
A cat’s-paw is a person who is used by someone else to achieve a purpose, often without fully realizing how they are being used.
When to Use:
This expression is more literary or formal than many other cat idioms and often has a negative meaning.
Examples:
- The politician was accused of using the young activist as a cat’s-paw.
- He believed he was making his own decision, but he was really a cat’s-paw for someone else.
How to Use These Idioms Naturally
Cat idioms are useful, but not every idiom fits every situation. The key is to understand the tone before using one.
1. Learn the meaning, not just the words
Do not translate an idiom word by word. For example, “let the cat out of the bag” does not mean that someone literally released a cat. It means to reveal a secret.
2. Pay attention to formality
Some expressions are strongly informal.
For example:
- Scaredy-cat → playful and informal
- Cool cat → informal
- Cat’s pajamas → playful and informal
- Bell the cat → less common and more literary
- Cat’s-paw → literary or formal
A formal business report would usually be clearer if you simply said “reveal the secret” instead of “let the cat out of the bag.”
3. Do not force idioms into every sentence
Native speakers do not use idioms constantly. If an idiom feels unnatural, use the simple meaning instead.
Instead of:
“The manager let the cat out of the bag about the schedule.”
You can say:
“The manager revealed the schedule.”
Both are correct, but the second sounds more neutral.
4. Watch for negative or teasing expressions
Expressions such as “scaredy-cat,” “fat cat,” and “like something the cat dragged in” can offend someone depending on the situation.
Use them with friends or in clearly suitable contexts.
5. Learn idioms in complete sentences
Remembering an idiom with an example makes it easier to use naturally.
For example:
“I can’t tell you yet. I don’t want to let the cat out of the bag.”
This helps you remember both the meaning and the normal sentence pattern.
Common Mistakes
Mistake 1: Changing the idiom too much.
Say “raining cats and dogs,” not “raining cats and puppy dogs.”
Mistake 2: Using an informal idiom in formal writing.
“Scaredy-cat” is fine in a casual conversation but may not fit an academic essay.
Mistake 3: Taking idioms literally.
“Cat nap” means a short sleep, not a nap taken by a cat.
Mistake 4: Using an idiom without checking its tone.
“Look what the cat dragged in!” can be funny among friends but insulting in another situation.
Practice Exercise
Fill in each blank with the correct cat idiom.
- I wanted to keep the birthday party secret, but Maria __________ about it.
- It was __________ all afternoon, so we stayed inside.
- My little brother is afraid of every insect. He is such a __________.
- I only have ten minutes before work, so I will take a quick __________.
- The children became noisy after the teacher left. __________.
Answer Key
- let the cat out of the bag
- raining cats and dogs
- scaredy-cat
- cat nap
- When the cat’s away, the mice will play
Frequently Asked Questions
What is the most common cat idiom?
One of the most common is “let the cat out of the bag.” It means to reveal a secret, either accidentally or intentionally.
What does “cat got your tongue?” mean?
“Cat got your tongue?” is a playful way to ask why someone is not speaking or answering. It is normally used in casual conversation.
What does “curiosity killed the cat” mean?
It means that being too curious can lead to trouble or unwanted consequences. It is often used as a warning when someone asks too many questions.
What does “raining cats and dogs” mean?
It means that it is raining very heavily. It is an informal English expression and does not mean that cats and dogs are actually falling from the sky.
Which cat idioms are informal?
Many cat idioms are informal, including “scaredy-cat,” “copycat,” “cool cat,” “cat nap,” “cat’s pajamas,” and “look what the cat dragged in.” Some others, such as “cat’s-paw” and “bell the cat,” are less common and may sound more literary.
Conclusion
Cat idioms add color and personality to English. The most useful ones to learn first are “cat got your tongue?” “let the cat out of the bag,” “curiosity killed the cat,” “raining cats and dogs,” “copycat,” and “cat nap.”
Once you understand their meanings and tones, you can recognize them more easily in conversations, books, movies, and online messages.
The best way to learn them is to practice each idiom in a natural sentence rather than trying to memorize a long list.
Oliver Hayes is a passionate technology writer and digital marketing enthusiast with expertise in SEO, WordPress, blogging, and web development. He creates practical, well-researched content that helps readers learn new skills and stay updated with the latest trends in the digital world.