What part of speech is the word okay?

"Okay" can be several parts of speech, depending on how it's used in a sentence:

* Interjection: When used as a standalone expression of agreement, acknowledgement, or understanding. For example: "Okay, I'll do it."

* Adjective: Describing something as satisfactory or acceptable. For example: "The food was okay, but not great."

* Adverb: Modifying a verb, adjective, or another adverb, meaning "all right" or "satisfactory." For example: "The test was okay, but I could have done better."

The most common usage of "okay" is as an interjection, followed by adjective.