silly

adj

1. absurd, inane, pointless, fatuous; foolish, Inf. damfool, Inf. damfoolish, senseless, nonsensical, Scot, and North Eng. glaikit, tomfoolish, Sl. cockeyed; poppycockish, Sl. cockamamie, amphigoric; ridiculous, derisible, risible, laughable, ludicrous, Sl. for the birds; comical, funny, farcical, humorous, droll; asinine, anserine, idiotic, Inf. moronic, imbecilic; childish, puerile, green, immature; crazy, crazed, Scot. doiled, Sl. kooky, mad, wild, insane, demented; daft, Inf. daffy, crackbrained, Inf. nutty; peculiar, strange, odd, All Sl. balmy, dippy, batty, cuckoo, buggy, screwy, wacky, goofy, loony.

2. weak-minded, simple, simple-minded, birdbrained; featherheaded, featherbrained, rattleheaded, rattlebrained; light-minded, light-headed, Inf. dizzy, trifling, Inf. footling, frivolous; muddled, muddleheaded, addlebrained, addlepated; absent-minded, scatterbrained, confused, bemused; feeble-minded, deficient, subnormal, retarded; dull, vapid, Inf. dopey, insensate, Inf. dumb; dull-witted, dim-witted, slow-witted, half-witted, witless, unwitty; harebrained, giddy, mercurial, reckless, erratic, unstable, harum-scarum; stupid, unintelligent, mindless, fatuitous, brainless, slow; dense, thick, thickheaded, thick-skulled, thick-witted, obtuse, stolid, lumpish, blunt; blockheaded, boneheaded, blockish, doltish; empty-headed, blank, vacant, vacuous.

3. unreasonable, irrational, illogical, meaningless; preposterous, extravagant, excessive; haphazard, aimless, driftless, unconnected, groundless; irrelevant, inconsequential, purposeless; thoughtless, careless, short-sighted, unwary, unheeding, heedless; inappropriate, inept, improper, incongruous, inconsistent; imprudent, indiscreet, foolhardy, irresponsible; unwise, ill-considered, ill-suited, ill-advised, injudicious.

4.Informal. stunned, dazed, dazzled, in a daze, knocked silly; stupefied, numb, benumbed.

n

5. fool, ninny, nincompoop; simpleton, idiot, imbecile, Inf. moron, nitwit, half-wit, goose; scatter-brain, rattlebrain, harebrain, dolt, dunce, dullard, dope, Inf. dummy; blockhead, bonehead, Sl. dumbhead, Sl. lunkhead, Inf. knucklehead, Sl. stupidhead.