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.

The series was consistently dumb but well-made, and this looks like a decent way to spend two hours if you like car chases, shootouts and explosions.

From MarketWatch • Apr. 30, 2026

Only occasionally, like in this case or that of the MrBeast video editor who traded markets related to his boss’s videos, the trader is dumb enough to get into either legal or financial trouble.

From Slate • Apr. 24, 2026

Proxima's "dumb machine" will be a stellarator called Alpha.

From BBC • Apr. 20, 2026

Analysts who didn’t update those numbers would look dumb.

From The Wall Street Journal • Apr. 7, 2026

Which I know is dumb, I mean, it’s not like she can read my mind or anything, but I don’t want to mess this up.

From "Wayward Creatures" by Dayna Lorentz

Vocabulary lists containing dumb

Spelling Practice 1, Unit 8

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!