Definition of wacky in English:

wacky

(also whacky)

adjective

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

    ‘a wacky chase movie’
    • ‘Thousands of people up and down the country are doing weird and wacky things today to raise money for Comic Relief.’
    • ‘Youngsters in Malmesbury and Sherston recycled old clothes to make weird and wacky costumes for a fashion show last Thursday.’
    • ‘Sure she came across as a bit wacky, and a bit all over the place at times.’
    • ‘Teachers and students were asked to make a gold coin donation in order to sport their weird and wacky hairstyles for the day.’
    • ‘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.’
    • ‘Thank you, all you wacky people, for your interesting suggestions for new car names.’
    • ‘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.’
    • ‘People completed the course dressed in all kinds of weird and wacky outfits this year.’
    • ‘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.’
    • ‘I think those whacky movies were more effective than dry lectures about the dangers of unsafe sex and drug use.’
    • ‘There's a flood of whacky stories, and it's difficult to tell what's real and what's not.’
    • ‘Those whacky gardening folk and their uproarious naming schemes!’
    • ‘Those wacky creative types at the ad agency will believe it ‘hits all the right buttons’.’
    • ‘You may even be able to squeeze out a few more wacky anecdotes from that slightly dysfunctional family of yours.’
    • ‘The cast of whacky eccentrics and their unbelievable behaviour grates; it doesn't come across as in any way real.’
    • ‘His wacky antics and funny walk endeared him to children of all ages.’
    • ‘The room itself takes on the artist's intentions, being transformed into a slightly wacky domestic parlour.’
    • ‘I have read some whacky things in my time but the latest report of the Electoral Reform Society takes some beating.’
    • ‘The children came up with some weird and wacky designs including a pink and purple dinosaur covered in sequins.’
    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/