or co·pa·set·ic, co·pe·set·ic

[ koh-puh-set-ik, -see-tik ]
/ ˌkoʊ pəˈsɛt ɪk, -ˈsi tɪk /

adjective Slang.

fine; completely satisfactory; OK.

Origin of copacetic

1915–20, Americanism; of obscure origin; popular attributions of the word to Louisiana French, Italian, Hebrew, etc., lack supporting evidence Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for copacetic


copasetic, copesetic or copesettic

/ (ˌkəʊpəˈsɛtɪk) /


US and Canadian slang very good; excellent; completely satisfactory

Word Origin for copacetic

C20: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for copacetic



1919, but it may have origins in 19c. U.S. Southern black speech. Origin unknown, suspects include Latin, Yiddish (e.g. Hebrew kol b'seder), Italian, Louisiana French (coupe-sétique), and Native American. None is considered convincing by linguists.

Online Etymology Dictionary, © 2010 Douglas Harper