Full Form and Variations While " OK " originally meant "oll korrect," its usage has evolved, and it now often stands simply as a standalone term, meaning in the sense of agreement, acknowledgement ... OK is commonly used in chattings, meetings or in-person conversations to agree to a thing. Tap to check out its full form . ... What is the full form of OK , Actually, It is OLL KORRECT. But, it was accepted as ALL CORRECT, Obvious Knowledge... 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 .