-v. 5. befool, make a fool of, spoof, play a trick on, play a joke on, kid; trick, deceive, humbug, delude, con, cheat, beguile, cozen, do, take in; hoodwink, blindfold, bluff, throw dust into the eyes, pull the wool over [s.o.'s] eyes, bamboozle; mislead, misguide, misdirect, lead astray, give a bum steer, misinform; swindle, defraud, finagle, pluck, fleece, bilk; victimize, hoax, dupe, gull, pigeon, SI. hornswoggle, Inf. flimflam, Inf diddle; circumvent, get around, overreach.
6. jest, joke, banter, tease, trifle with, spoof, josh, jive, put [s.o.] on; gibe, jeer, mock, deride, scoff, taunt; act the fool, play the monkey.
7. pretend, make believe, feign, act, play; stage, simulate, sham, counterfeit, fake.
8. fool around squander, waste, run through, throw away, fritter away; dissipate, deplete, exhaust, expend, misspend.
9. fool with toy with, trifle with, meddle with, tamper with, mess in or with, monkey around or with, dabble with or in, palter with, dally with, fiddle with.
foolery, n. 1. antic, antics, caper, Inf. shenanigans, SI. monkeyshines, SI. monkeybusiness. See - folly (def. 4).
2. absurdity, inanity, pointlessness, fatuity, fatuousness, foolishness, folly. See - folly (def. 1).
foolhardy, adj. reckless, rash, brash, temerarious, desperate, hotheaded; harebrained, thoughtless, regardless, careless, short-sighted, daring, venturous, venturesome, adventurous, dare-devil, devil-may-care; impetuous, impulsive, hasty, madcap, heedless, unheeding, Inf. trigger-happy, unwary; headlong, unexpected, unforeseen; spontaneous, unpremeditated, sudden, abrupt, precipitate; audacious, bold, fearless; incautious, imprudent, indiscreet, irresponsible, injudicious; unwise, ill-considered, ill-suited, ill-advised, impolitic.
foolish, adj. 1. incautious, imprudent, indiscreet, irresponsible, injudicious; unwise, ill-considered, ill-suited, ill-advised, impolitic; impetuous, impulsive, hasty, short-sighted, heedless, unheeding; foolhardy, headlong, rash, brash, unwary; thoughtless, careless, reckless; spontaneous, unpremeditated, sudden, abrupt, precipitate.
2. absurd, inane, pointless, fatuous, senseless, nonsensical, Inf. damfool, Inf. damfoolish, tomfoolish, Scot. and North Eng. glaikit, SI. cockeyed; poppy-cockish, SI. cockamamie, amphigoric; ridiculous, de-risible, risible, laughable, ludicrous, SI. for the birds; comical, funny, farcical, humorous, droll; asinine, anserine, idiotic, Inf. moronic, imbecilic; childish, puerile, green, immature; crazy, crazed, SI. kooky, Scot. doiled, mad, wild, insane, demented; daft, Inf. daffy, crackbrained, Inf. nutty; peculiar, strange, odd; All SI. balmy, dippy, batty, cuckoo, buggy, screwy, wacky, goofy, loony.
3. weak-minded, simple, simple-minded, birdbrained; featherheaded, featherbrained, rattleheaded, rattlebrained; light-minded, light-headed, Inf. dizzy, Inf. footling; 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.