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 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.

Aug 18, 2024 · When you’re expressing assent to something, or conveying that you’re all right, in writing or text, do you use “OK” or “okay”? Chances are you’ve used both. You certainly see both forms …

“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.

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

Mar 6, 2025 · In general, “OK” is considered slightly more informal, while “okay” might be preferred in more formal writing. However, both forms are widely accepted and understood.

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