dumb - definition and synonyms

adjective 

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/dʌm/
adjectivedumb
comparativedumber
superlativedumbest
  1. 1
    informal stupid

    She’s so dumb she can’t even figure out her answering machine.

    You gave him your phone number? That was a dumb thing to do.

  2. 2
    mainly literary temporarily unable or unwilling to speak, especially because you are very shocked

    Some of the passengers were dumb with terror.

    be struck dumb:

    I was struck dumb by the clerk’s rudeness.

derived word