OK - Wikipedia
https://en.wikipedia.org/wiki/OK
WEBOK (/ ˌ oʊ ˈ k eɪ / ⓘ; spelling variations include okay, okeh, O.K., ok and Ok, as well as k in texting) is an English word (originating in American English) denoting approval, acceptance, agreement, assent, acknowledgment, or a sign of indifference. OK is frequently used as a loanword in other languages. It has been described as the most ...
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