Noun
She's nice but her sister's a real wacko.
a completely wacko obsession with cleaning
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Noun
People who see ghosts tend to see the same ghost wafting down the same staircase, but none of the characters populating Leo’s wacko hallucinations have returned for a repeat perfor-mance.—Literary Hub, 10 Apr. 2026 This wacko crew was one of the greatest things in the history of television.—Jordan Hoffman, EW.com, 14 Aug. 2025 His search takes him to a wacko cult in the desert run by a scamster, and that of course puts the sheriff in deadly danger.—Sandra Dallas, Denver Post, 6 July 2025 You could also get lost attempting to read the splintered English and Hebrew letters running atop a stage festooned with wacko props and occult imagery.—Andrew Lampert, Artforum, 1 May 2025 See All Example Sentences for wacko