dumb

(dated)Unable to speak; lacking power of speech.

deaf, dumb, and blind

His younger brother was born dumb, and communicated with sign language.

Đồng nghĩa: mute, speechless, wordless

(archaic)Not talkative; taciturn or unwilling to speak.

(dated)Having no input or voice in running things.

(dated, usually)(dated, of things, actions, etc.) Unaccompanied by words or speech, silent, wordless.

dumb show

(dated)Not producing any sound, silent.

(derogatory, especially, informal)(informal, derogatory, especially of a person) Stupid.

You are so dumb! You don't even know how to make toast!

Đồng nghĩa: feeble-minded, idiotic, moronic, stupid, addlebrained, addlepated, airheaded, bee-brained, beef-witted, beefheaded, beetle-headed, birdbrained, blockheaded, Boeotian, boneheaded, boofheaded, braindead, brainless, bubbleheaded, buffle-headed, bullet-headed, cerebrally challenged, childish, chowderheaded, chuckleheaded, crackbrained, cretinous, daft, dense, dented, dim-bulb, dim-headed, dim-witted, dim, doltish, dopey, dozy, drowsy, dull-headed, dull-minded, dull-witted, dull, dumber than a box of rocks, dumb, dunderheaded, empty-headed, fatheaded, feeble-minded, flea-brained, foolish, fuzzy-headed, fuzzy-minded, goofy, half-brained, half-witted, hammer-headed, idiotic, ignorant, imbecilic, inane, insipid, intellectually challenged, knuckleheaded, lamebrained, lowbrow, lumpish, lunkheaded, mentally challenged, mentally retarded, mindless, monosynaptic, moronic, muttonheaded, nitwitted, numbskulled, oafish, obtuse, peabrained, pratty, pudding-headed, puerile, purblind, quarter-witted, retarded, ridiculous, rockheaded, sharp as a bowling ball, sheep-headed, silly, simple, slow, slow on the uptake, slow-witted, smooth-brained, stolid, stupid, thick-skulled, thickheaded, thickwitted, thick, unapprehensive, unclever, uninformed, unintelligent, unsmart, vacant, vacuous, witless, wooden-headed, wool-headed, woolly-headed, woolly-minded, dumb as a bag of hammers, dumb as a box of rocks, dumb as a doorknob, dumb as an ox, dumb as a post, dumb as a sack of hammers, dumb as dirt, dumber than a rock, not the sharpest crayon in the box, not the sharpest knife in the drawer, not the sharpest tool in the shed, thick as a brick, thick as a plank, thick as champ, thick as mince, thick as two short planks, thick as a whale omelette, ass-brained, fuckwitted, shit-for-brains, thick as pig shit

(figuratively)Pointless, foolish, lacking intellectual content or value.

This is dumb! We're driving in circles! We should have asked for directions an hour ago!

Brendan had the dumb job of moving boxes from one conveyor belt to another.

Đồng nghĩa: banal, brainless, dopey, silly, stupid, ridiculous, vulgar

Lacking some functionality or property ordinarily characteristic of its kind.

(of technology) Not equipped with intelligent behavior or processing capabilities of its own.

(obsolete, rare)Lacking brightness or clearness as a colour; dim, dull.

(dated)(African-American Vernacular, dated) An intensifier expressing contempt; damn, damned.

(dated, transitive)To silence.

(transitive)To make stupid.

(transitive)To represent as stupid.

(transitive)To reduce the intellectual demands of.

(not comparable)(African-American Vernacular) Very, extremely.

Đồng nghĩa: type, mad, hella, wicked, odee, bare