‘ OK ’ full form is ‘Oll Korrect’. ‘ OK ’ full form in the English language may be one of the common words discovered, but its origin was literally new. Learn the origin, meaning, and usage of the word OK , which is a common expression of agreement or approval. Find out the difference between OK and OKAY, and other forms and emojis of OK . OK is an English word denoting approval, acceptance, agreement, or indifference. It is an initialism of "oll korrect" as a misspelling of "all correct" and has many spelling variations. We now know the pun-intended ok full form and its abbreviation. In fact, it was so humorous that it caught up with the current population and spread like wildfire.