Origin of wacko
"wacko." YourDictionary, n.d. Web. 19 December 2018. <https://www.yourdictionary.com/wacko>.
wacko. (n.d.). Retrieved December 19th, 2018, from https://www.yourdictionary.com/wacko
also whack·o Slang
(comparative more wacko, superlative most wacko)
wack(y) + -o
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