OK (/ ˌoʊˈkeɪ / ⓘ), with spelling variations including okay, O.K. and many others, is an English word (originating in American English) denoting approval, acceptance, agreement, assent, …

The meaning of OK is all right. How to use OK in a sentence.

OK definition: all right; proceeding normally; satisfactory or under control. See examples of OK used in a sentence.

Okay is used as an adverb in informal speech, meaning ‘all right’, ‘neither well nor badly’: …

You can say ' Okay? ' to check whether the person you are talking to understands what you have said and accepts it.

OK From Longman Dictionary of Contemporary English OK1, okay /ˌəʊ ˈkeɪ $ ˌoʊ-/ S1 interjection 1 used to show that you agree with something or give permission for someone to do …

What Is the Origin of the "Okay"? The abbreviation "OK" (which later turned into the globally used word "okay") was first noted in 1839 in the office of Charles Gordon Greene at the Boston …

Dec 8, 2025 · Okay vs Ok: what’s correct? This student-friendly grammar guide explains spelling, usage, examples, rules, and exercises for English learners.

Nov 26, 2025 · Both ‘ok’ and ‘okay’ are used in British English and there is no significant difference in usage between the two. However, ‘okay’ is generally considered to be slightly …

“OK” is more informal and versatile, while “Okay” is more formal and emphatic. Understanding these subtle differences can help you choose the right word for the right situation.