Is OK a word?
Correct answer: Yes

Andy Stewts
my favorite word

mjmtabor
you didn't have the periods that makes it not a word

CoastwalkerUnplugged
It’s an abbreviation!

Player #1489294
Nearlyfit,
And that is correct and acceptable in the US as our english is so poor, and not spoken well or correctly.

Nearlyfit
Depends what side of the pond you live... Scrabble has only just accepted it but only in the US of A