C1adjectiveinformal1K

Dumb

UK /["/dʌm/"]/US /["/dʌm/"]/

Definition

stupid

In simple words: Not smart or unable to think clearly.

Examples

  • He felt dumb after forgetting the answer to such a simple question.
  • Calling someone dumb is rude and can hurt their feelings.
  • The old computer was so dumb it couldn't even connect to the internet.
  • She made a dumb mistake by leaving her keys at home.
  • In the past, a dumb person referred to someone who could not speak.
  • The dumb waiter silently carried the dishes between floors.

Usage notes

Often used informally to describe someone as not intelligent. Be cautious; using 'dumb' in a derogatory way can be offensive. Consider using 'unintelligent' in formal contexts.

Grammar pattern

standalone adjective

Memory hint

Think of a 'dumbbell' — it’s heavy but not smart!

Collocations

  • be
  • feel
  • look
  • extremely
  • fairly
  • very
  • be
  • become
  • be struck
  • with
  • deaf and dumb
  • be
  • become
  • be struck
  • with
  • deaf and dumb

Synonyms

  • stupid
  • foolish
  • dim
  • simple-minded

Antonyms

  • smart
  • intelligent
  • clever

Common mistakes

  • Using 'dumb' to describe someone who is mute (correct term is 'mute').
  • Confusing with 'deaf' (dumb doesn't mean unable to hear).
  • Using as a formal descriptor in professional settings.