Definition of wacky in English:

wacky

(also whacky)

adjectivewackiest, wackier, whackiest, whackier

informal
  • Funny or amusing in a slightly odd or peculiar way.

    ‘a wacky chase movie’
    • ‘People completed the course dressed in all kinds of weird and wacky outfits this year.’
    • ‘The Renaissance repertoire ranges from the whacky to the sublime, and it's possible that we gave some pieces their first Scottish performances in hundreds of years.’
    • ‘The cast of whacky eccentrics and their unbelievable behaviour grates; it doesn't come across as in any way real.’
    • ‘Youngsters in Malmesbury and Sherston recycled old clothes to make weird and wacky costumes for a fashion show last Thursday.’
    • ‘Thank you, all you wacky people, for your interesting suggestions for new car names.’
    • ‘After 170 years of wacky inventions and strange new models, it seems we may finally be at the end of the road for the electric car.’
    • ‘The children came up with some weird and wacky designs including a pink and purple dinosaur covered in sequins.’
    • ‘There's a flood of whacky stories, and it's difficult to tell what's real and what's not.’
    • ‘His wacky antics and funny walk endeared him to children of all ages.’
    • ‘Thousands of people up and down the country are doing weird and wacky things today to raise money for Comic Relief.’
    • ‘I have read some whacky things in my time but the latest report of the Electoral Reform Society takes some beating.’
    • ‘Teachers and students were asked to make a gold coin donation in order to sport their weird and wacky hairstyles for the day.’
    • ‘I think those whacky movies were more effective than dry lectures about the dangers of unsafe sex and drug use.’
    • ‘Those wacky creative types at the ad agency will believe it ‘hits all the right buttons’.’
    • ‘Sure she came across as a bit wacky, and a bit all over the place at times.’
    • ‘Those whacky gardening folk and their uproarious naming schemes!’
    • ‘You may even be able to squeeze out a few more wacky anecdotes from that slightly dysfunctional family of yours.’
    • ‘The room itself takes on the artist's intentions, being transformed into a slightly wacky domestic parlour.’
    • ‘Dixon leapt to fame in the 1980s with his wacky welded furniture made of bits of scrap metal.’
    • ‘Dottie is a Lucille Ball clone who performs wacky antics on her television show.’
    zany, madcap, offbeat, quirky, outlandish, eccentric, idiosyncratic, surreal, ridiculous, nonsensical, crazy, absurd, insane, far out, fantastic, bizarre, peculiar, weird, odd, strange, cranky, freakish
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Origin

Mid 19th century (originally dialect): from the noun whack + -y.

Pronunciation

wacky

/ˈwaki/