/ˈwæk.iː/
OriginFrom whack (“someone who whacked his head onto something often, hence being weird”) + -y.
- informal, slangZany; eccentric.
“Though the idea of placing wacky made-up characters in a real-life context was carried over from Da Ali G Show—wherein Buzz Aldrin was once asked if he was upset that Michael Jackson got all the credi”
“How do artists and curators come up with titles for exhibitions? They seem to get wackier all the time.”
Formswackier(comparative) · wackiest(superlative) · whacky(alternative)
Source: Wiktionary