OK is an informal spoken English word. It means: OK, that's acceptable. You can also agree, agree. It is also the most famous English word in the world.
Although people will use this word hundreds of times a week to indicate whether things are ok or not, few people may explore the history of this word.
In fact, the history of this word is not long. It was first recorded in 1839, but there is no doubt that this word has been used in circulation before this. There have been many studies on the origin of the word OK, among which alan walker Reid finally confirmed that OK originated from a joke. Someone pronounced the phrase all correct as oll (or orl) correct, this person or others spelled it as oll korrect, and finally abbreviated it as OK.