What part of speech is maintain?

"Maintain" can be a few different parts of speech depending on how it's used in a sentence. Here are the most common ones:

* Verb: This is the most common usage. It means to keep something in a certain condition or state.

* Example: "She maintains a healthy diet."

* Noun: This is less common, but it can refer to the act of maintaining something.

* Example: "The maintain of the house is her responsibility."

Let me know if you have a specific sentence in mind and I can help you determine the part of speech!