Hmm... Good points, AnWulf. I hadn't even thought of all those words, nor the chronological dates. I suppose that's one of the hazards of being online late at night - your mind is dulled. In any case, with all that taken into account, "Okeh" is by far the simplest theory of origin: Somebody who was learning the Choctaw language started using it, then it caught on and other people started using it.

Wow... so many theories... Okay, here's my thoughts.

1. Old Kinderhook, even though that used the initials, could not have been the actual origination of OK if they used the "all right" definition for their campaign.
2. There are no wars without deaths. 0 Kills, simple as it sounds, can't work.

3. Does anyone recall Occam's Razor? The simplest explanation is always the most likely to be true. I respect those from Turkey, but the "arrow" into the "moon" with the moon being a target, and the OK meaning the arrow hit the center, seems a little bit too complicated for a reasonable explanation, in my opinion.

I really think it's either "Oll Korrect" or "Ola Kala", though "Oll Korrect" seems a bit complex as well. As simple as Choctaw "Okeh" is, Native American speech doesn't make it into common usage in the English language in any other notable instance that I know of. Therefore, I lean more towards the Greek theory. But of course, this is simply my opinion.

Note that I'm an American. I, at least, am not choosing the one closest to my own roots in an attempt to elevate my importance.