wacky
Concise Oxford English Dictionary © 2008 Oxford University Press:
wacky /ˈwaki/ (also whacky)
▶adjective (wackier, wackiest) informal funny or amusing in a slightly odd or peculiar way.
– derivatives
wackily adverb,
wackiness noun.
wackily adverb,
wackiness noun.
'wacky' also found in these Oxford entries:

