There may be more stories about the origin of “OK” than there are uses for it: it comes from the Haitian port “Aux Cayes,” from Louisiana French au quai, from a Puerto Rican rum labeled “Aux Quais,” from German alles korrekt or Ober-Kommando, from Chocktaw okeh, from Scots och aye, from Wolof waw kay, from Greek olla kalla, from Latin omnes korrecta. Other stories attribute it to bakers stamping their initials on biscuits, or shipbuilders marking wood for “outer keel,” or Civil War soldiers carrying signs for “zero killed.”
The truth about OK, as Allan Metcalf, the author of OK: The Improbable Story of America’s Greatest Word, puts it, is that it was “born as a lame joke perpetrated by a newspaper editor in 1839.” This is not just Metcalf’s opinion or a half remembered story he once heard, as most OK stories are. His book is based in the thorough scholarship of Allen Walker Read, a Columbia professor who for years scoured historical sources for evidence about OK, and published his findings in a series of journal articles in 1963 to 1964.
via Mental Floss
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