What part of speech is quit?

"Quit" can be a few different parts of speech depending on its usage:

* Verb: This is the most common usage. It means to stop doing something, often abruptly.

* Example: "He quit his job."

* Adjective: This is less common, but it means completely finished, or no longer active.

* Example: "The game was quit." (meaning the game was finished)

* Interjection: This is even less common, and is mainly used in informal contexts to express annoyance or disapproval.

* Example: "Quit it!" (meaning stop doing that)

So, without context, it's hard to say definitively what part of speech "quit" is. You'll need to look at how it's used in a sentence to determine its function.