Entry Word: foolish

Function: adjective

Meaning: 1 showing or marked by a lack of good sense or judgment <foolish people who thought that the world would end in the year 2000> <a foolish scheme that was supposed to make us all rich>

Synonyms absurd, asinine, balmy, brainless, cockeyed, crazy, cuckoo, daffy, daft, dotty, fatuous, harebrained, half-witted, insane, jerky, kooky, loony (also looney), lunatic, mad, nonsensical, nutty, preposterous, sappy, screwball, senseless, silly, simpleminded, stupid, unwise, wacky, weak-minded, witless, zany

Related Words dumb, idiotic, imbecilic, moronic; fallacious, illogical, invalid, irrational, unreasonable; farcical, laughable, ludicrous, ridiculous

Near Antonyms brainy, bright, clever, intelligent, smart; logical, rational, reasonable, valid

Antonyms judicious, prudent, sage, sane, sapient, sensible, sound, wise

2 conceived or made without regard for reason or reality <it's foolish to make plans for the year 2500, since you won't even be around> — see fantastic 1