Etymology of "copacetic"

[Christopher Philippo]

“Dictionaries are cautious about attributing a source for it, reasonably so, as there are at least five competing explanations, with no very good evidence for any of them.”
http://www.worldwidewords.org/weirdwords/ww-cop1.htm

Though not the oldest use of the word, it would be nice to see the lyrics to this song:

"DeKoven Thompson, the composer, threatens to serve papers on Eloise Johnson Bennett for using the song, 'Copasetic Papa,' at the Grand theatre last week.  The song is a number in his Melodyland operatic musical comedy.”
“Stage Notes.” Pittsburgh Courier. December 19, 1925: B1 col 3.

Christopher K. Philippo

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The American Dialect Society - http://www.americandialect.org