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[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 Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for cop acetic


(US & Canadian, slang) very good; excellent; completely satisfactory
Word Origin
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
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Word Origin and History for cop acetic



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
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Slang definitions & phrases for cop acetic



As it should be; quite satisfactory; cool, ok

[1919+ fr black; origin unknown; perhaps fr Louisiana Creole French coupe-se´tique in the same sense, semantically related to cope, attested fr about 1880; perhaps fr Hebrew kol ba seder, ''all in order,'' which may have been acquired by black customers of a Jewish merchant]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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