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.

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 Morning Post. …

OKAY definition: a variant of OK. See examples of okay used in a sentence.

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

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

“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.

Sep 16, 2022 · Both okay and OK (pronounced “oh-kay”) are grammatically correct and perfectly interchangeable. Unlike other words that might depend on regional variations, there aren’t any real …

Jan 10, 2026 · Despite OK's ubiquity, many people don't know the words behind this two-letter agreement.

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 more formal than ‘ok’.