Thesaurus.com
Dictionary.com
Definitions

dumb

[duhm] / dʌm /
ADJECTIVE
having or using no voice
Synonyms
STRONGEST
speechless
WEAK
at a loss for words inarticulate incoherent mum mute quiet silent soundless tongue-tied uncommunicative voiceless wordless
Antonyms
WEAK
speaking
ADJECTIVE
stupid, unintelligent
Synonyms
STRONGEST
dull foolish
WEAK
dense dim-witted doltish feebleminded moronic simple-minded thick
Antonyms
WEAK
bright intelligent sharp smart

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

My character in the show is English and not interested in American football, so I’m kind of having to play dumb.

From The Wall Street Journal • Mar. 2, 2026

"We were young and dumb and had summit fever and really wanted to do that route and we continued anyways," Rebekah, a nurse, says.

From BBC • Feb. 28, 2026

I played dumb just to annoy her; that’s what sisters do.

From The Wall Street Journal • Feb. 27, 2026

From abandoned panic rooms to flubbed Ghostface executions, the characters make so many dumb choices that eventually we’re convinced that Williamson is frustrating us by design.

From Los Angeles Times • Feb. 26, 2026

“I’m not a thief! And I don’t need to cheat to win some dumb game.”

From "The Missing Mitt (The Hardy Boys: Secret Files, #2)" by Franklin W. Dixon