Synonyms of dumb in English:

dumb


See definition of dumb

adjective

1‘she stood dumb while he poured out a stream of abuse’

SYNONYMS
speechless, tongue-tied, wordless, silent, at a loss for words, voiceless, inarticulate, taciturn, uncommunicative, untalkative, tight-lipped, close-mouthed, saying nothing
informal mum

2‘he was born deaf and dumb’

SYNONYMS
mute, unable to speak, without the power of speech
technical aphasic, aphonic

3‘he is not as dumb as he wants people to believe’

SYNONYMS
stupid, unintelligent, ignorant, dense, brainless, mindless, foolish, slow-witted, slow, dull, dull-witted, witless, half-witted, blockish, doltish, dunce-like, simple, simple-minded, empty-headed, vacuous, vapid, idiotic, moronic, imbecilic, cretinous, obtuse, bovine, lumpish
informal thick, dim, dopey, dippy, dozy, half-baked, slow on the uptake, soft in the head, as thick as two short planks, thickheaded, chuckleheaded, dunderheaded, wooden-headed, fat-headed, thick-skulled, muttonheaded, boneheaded, lamebrained, birdbrained, pea-brained, brain-dead, dead from the neck up
British informal daft, not the full shilling
South African informal dof
West Indian informal dotish
North American vulgar slang dumb-ass
ANTONYMS

clever