What part of speech is trying?

"Trying" can be a few different parts of speech depending on how it's used in a sentence:

* Present participle: This is the most common usage. It acts as a verb, often part of a verb phrase: *He is trying to open the door.*

* Adjective: This is less common but can occur, usually in a more informal style: *She's got a trying personality.*

* Gerund: This is another form of verb that acts as a noun: *Trying to solve the problem was exhausting.*

Let me know the specific sentence you're working with, and I can tell you the exact part of speech for "trying" in that case!