American Dictionary

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Definition dumb in American English

dumb adjective

adjective
/dʌm/
1

stupid

Example

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

Example

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

Synonyms and related words
2

temporarily unable or unwilling to speak, especially because you are very shocked

Example

Some of the passengers were dumb with terror.

Example

I was struck dumb by the clerk's rudeness.

Synonyms and related words
Synonyms and related words
Definition dumb in American English