What part of speech is complimenting?

"Complimenting" is a verb, specifically the present participle of the verb "to compliment".

Here's why:

* Verb: It describes an action: the act of giving a compliment.

* Present participle: It ends in "-ing" and often functions as a noun, adjective, or part of a verb phrase. In this case, it's part of a verb phrase ("She is complimenting her friend").

Let me know if you have any other grammar questions! 😊