[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]