[syn: balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky]
The Collaborative International Dictionary of English v.0.48:
loony \loony\ (l[=oo]n"[y^]) n.
someone mentally deranged and possibly dangerous.
Syn: crazy, looney, weirdo, psycho.
[WordNet 1.5]
The Collaborative International Dictionary of English v.0.48:
loony \loon"y\ (l[=oo]n"[y^]), a. [Shortened fr. lunatic.]
1. Crazy; insane; lunatic; mentally unsound. [Low, U.S.]
[Written also loony, luny and looney.] See Luny.
[1913 Webster]
2. Very foolish; very impractical; as, loony ideas.
[PJC]
The Collaborative International Dictionary of English v.0.48:
Luny \Lu"ny\, a. [Shortened fr. lunatic.]
Crazy; insane; mentally unsound. [Written also loony and
looney.] [Low, U.S.]
[1913 Webster]
WordNet (r) 3.0 (2006):
loony
adj 1: informal or slang terms for mentally irregular; "it used
to drive my husband balmy" [syn: balmy, barmy,
bats, batty, bonkers, buggy, cracked,
crackers, daft, dotty, fruity, haywire,
kooky, kookie, loco, loony, loopy, nuts,
nutty, round the bend, around the bend, wacky,
whacky]
n 1: someone deranged and possibly dangerous [syn: crazy,
loony, looney, nutcase, weirdo]
Moby Thesaurus II by Grady Ward, 1.0:
89 Moby Thesaurus words for "loony":
absurd, apish, asinine, balmy, bananas, barmy, bats, batty, beany,
bedlamite, befooled, beguiled, besotted, bonkers, brainless,
buffoonish, buggy, bughouse, bugs, cockeyed, crackers, crazy,
credulous, cuckoo, daffy, daft, dazed, dement, dippy, dizzy,
doting, dotty, dumb, fatuitous, fatuous, flaky, flipped, fond,
fool, foolheaded, foolish, freaked-out, fruitcakey, fruity,
fuddled, futile, gaga, goofy, gulled, harebrained, haywire,
idiotic, imbecile, inane, inept, infatuated, insane,
just plain nuts, kooky, loon, loopy, mad, madman, maniac, maudlin,
moronic, non compos, nut, nuts, nutty, off the hinges,
off the track, off the wall, potty, preposterous, round the bend,
sappy, screwball, screwballs, screwy, senseless, sentimental,
silly, slaphappy, stupid, thoughtless, wacky, wet, witless