Wacky
来自Big Physics
Safin（讨论 | 贡献）2022年4月28日 (四) 02:48的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=wacky+etymology&newwindow=1&hl=en ref] mid 19th century (originally dialect): from the no…”的新页面）
mid 19th century (originally dialect): from the noun whack + -y1.
wiktionary
From whack, meaning someone who whacked their head onto something often, hence being weird.
wacky ( countable and uncountable, plural wackies)
etymonline
wacky (adj.)
"crazy, eccentric," 1935, variant of whacky (n.) "fool," late 1800s British slang, probably ultimately from whack "a blow, stroke," from the notion of being whacked on the head one too many times.
