Dumb Idioms (With Meaning and Examples)

Welcome to our fun exploration of English idioms featuring the word “dumb”! Idioms are phrases that don’t mean exactly what the words say but have a hidden meaning. Even kids can learn these silly sayings and sound super smart!

Dumb Idioms

Here are 20 dumb idioms in English.

1. Dumb as a doorknob

Meaning: Very stupid.

Example: He’s as dumb as a doorknob.

2. Dumb down

Meaning: Simplify too much.

Example: Don’t dumb down the story.

3. Dumb luck

Meaning: Luck without effort.

Example: He passed by dumb luck.

4. Dumb bunny

Meaning: A foolish person.

Example: Stop acting like a dumb bunny.

5. Dumbstruck

Meaning: So shocked to be speechless.

Example: She was dumbstruck by the news.

6. Dumbfounded

Meaning: Astonished, unable to speak.

Example: I was dumbfounded at his honesty.

7. Play dumb

Meaning: Act ignorant on purpose.

Example: He decided to play dumb.

8. Strike dumb

Meaning: Shocked into silence.

Example: The verdict left her struck dumb.

9. Dumb as a stump

Meaning: Extremely foolish.

Example: He’s as dumb as a stump.

10. Deaf and dumb

Meaning: Unable to hear or speak.

Example: He is neither deaf nor dumb.

11. Dumb blonde

Meaning: Stereotype of a foolish person.

Example: She’s smart, not a dumb blonde.

12. Dumb cluck

Meaning: A stupid person.

Example: Don’t be such a dumb cluck.

13. Dumb show

Meaning: A mime performance.

Example: They performed a dumb show.

14. Go dumb

Meaning: To stop speaking.

Example: He went dumb during the debate.

15. Keep mum

Meaning: Keep a secret.

Example: She kept mum about the surprise.

16. Mum’s the word

Meaning: Keep this secret.

Example: Remember, mum’s the word.

17. Dumb it up

Meaning: Make something appear foolish.

Example: Don’t dumb it up on purpose.

18. Not say boo to a goose

Meaning: Extremely shy or quiet.

Example: She wouldn’t say boo to a goose.

19. Speak with forked tongue

Meaning: To lie or deceive.

Example: He speaks with a forked tongue.

20. Born yesterday

Meaning: Naive or easily fooled.

Example: I wasn’t born yesterday!

Dumb Idioms