Cracked
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 12:56的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=cracked+etymology&newwindow=1&hl=en ref] Old English cracian ‘make an explosive noise…”的新页面）
Old English cracian ‘make an explosive noise’; of Germanic origin; related to Dutch kraken and German krachen . crack (sense 4 of the noun) is from Irish craic ‘entertaining conversation’.
etymonline
cracked (adj.)
mid-15c., "broken by a sharp blow," past-participle adjective from crack (v.). From 1560s as "burst, split." Meaning "mentally unsound" is by 1690s. (compare crack-brain "crazy fellow"). The equivalent Greek word was used in this sense by Aristophanes.
