'Wacky' definitions:

Definition of 'wacky'

adjective

Ludicrous, foolish; "gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books" [syn: cockamamie, cockamamy, goofy, sappy, silly, wacky, whacky, zany]

adjective

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]

Definition of 'Wacky'

From: GCIDE

Wacke \Wack"e\, Wacky \Wack"y\, n. [G. wacke, MHG. wacke a large stone, OHG. waggo a pebble.] (Geol.) A soft, earthy, dark-colored rock or clay derived from the alteration of basalt. [1913 Webster]

Synonyms of 'wacky'

From: Moby Thesaurus

abnormal,
absurd,
anomalous,
apish,
asinine,
balmy,
bananas,
barmy,
bats,
batty,
beany,
befooled,
beguiled,
besotted,
bonkers,
brainless,
buffoonish,
buggy,
bughouse,
bugs,
cockeyed,
cracked,
crackers,
crank,
crankish,
cranky,
crazed,
crazy,
credulous,
crotchety,
cuckoo,
daffy,
daft,
dazed,
demented,
deranged,
deviant,
deviative,
different,
dippy,
divergent,
dizzy,
doting,
dotty,
dumb,
eccentric,
erratic,
exceptional,
fatuitous,
fatuous,
fey,
flaky,
flipped,
fond,
fool,
foolheaded,
foolish,
freaked-out,
freakish,
fruitcakey,
fruity,
fuddled,
funny,
futile,
gaga,
goofy,
gulled,
harebrained,
haywire,
idiocratic,
idiosyncratic,
idiotic,
imbecile,
inane,
inept,
infatuated,
insane,
irregular,
just plain nuts,
kinky,
kooky,
loony,
loopy,
lunatic,
mad,
maggoty,
maudlin,
moronic,
nuts,
nutty,
odd,
oddball,
off the hinges,
off the track,
off the wall,
peculiar,
potty,
preposterous,
queer,
quirky,
round the bend,
sappy,
screwball,
screwballs,
screwy,
senseless,
sentimental,
silly,
singular,
slaphappy,
strange,
stupid,
thoughtless,
twisted,
unconventional,
unnatural,
wet,
whimsical,
witless