Synonyms of silly in English:

silly


See definition of silly

adjective

1‘don't be so silly’

SYNONYMS

foolish, stupid, unintelligent, idiotic, brainless, mindless, witless, imbecilic, imbecile, doltish

imprudent, thoughtless, rash, reckless, foolhardy, irresponsible

mad, erratic, unstable, scatterbrained, feather-brained

flighty, frivolous, giddy, fatuous, inane, immature, childish, puerile, half-baked, empty-headed, half-witted, slow-witted, weak-minded

informal daft, crazy, dotty, scatty, loopy, screwy, soft, brain-dead, cretinous, thick, thickheaded, birdbrained, pea-brained, pinheaded, dopey, dim, dim-witted, dippy, pie-faced, fat-headed, blockheaded, boneheaded, lamebrained, chuckleheaded, dunderheaded, wooden-headed, muttonheaded, damfool

British informal divvy, dappy

Northern English Scottish informal glaikit

North American informal dumb-ass, chowderheaded

South African informal dof

West Indian informal dotish

dated tomfool

ANTONYMS

sensible, rational

2‘that was a silly thing to do’

SYNONYMS

unwise, imprudent, thoughtless, foolish, stupid, idiotic, senseless, mindless, fatuous

rash, reckless, foolhardy, irresponsible, inadvisable, injudicious, ill-considered, misguided, inappropriate, illogical, irrational, unreasonable

hare-brained, absurd, ridiculous, ludicrous, laughable, risible, farcical, preposterous, asinine

informal daft, crazy

ANTONYMS

sensible, rational

3‘he would brood about silly things’

SYNONYMS

trivial, trifling, frivolous, footling, petty, niggling, small, slight, minor, insignificant, unimportant, inconsequential, of little account

informal piffling, piddling

North American informal small-bore

ANTONYMS

important

4‘he often drank himself silly’

SYNONYMS

senseless, insensible, unconscious, stupid, dopey, into a stupor, into oblivion, into senselessness, into a daze

numb, dazed, stunned, stupefied, groggy, muzzy


noun

1‘come on, silly’

SYNONYMS

nincompoop, dunce, simpleton

nitwit, ninny, dimwit, dope, dumbo, dummy, chump, goon, jackass, fathead, bonehead, chucklehead, knucklehead, lamebrain, clod, pea-brain, pudding-head, thickhead, wooden-head, pinhead, airhead, birdbrain, scatterbrain, noodle, donkey

British silly billy, stupe, nit, clot, twit, berk, twerp

Scottish nyaff, sumph, gowk, balloon

North American bozo, boob, schlepper, goofball, goof, goofus, galoot, lummox, dip, simp, spud, coot, palooka, poop, yo-yo, dingleberry

NZ Australian drongo, dill, alec, galah, nong, bogan, poon, boofhead

South African mompara

dated muttonhead, noddy

archaic clodpole, spoony, mooncalf