* Adverb: This is the most common use of "actually." It modifies a verb, adjective, or another adverb, indicating that something is true or real, or that something is the case in reality.
* Example: "I *actually* like broccoli." (modifies the verb "like")
* Interjection: When used to express surprise or to emphasize a statement, "actually" functions as an interjection.
* Example: "Actually, I'm not going to the party."
* Adjective: While less common, "actually" can sometimes act as an adjective, meaning "real" or "genuine."
* Example: "This is an *actually* scary movie."
The part of speech depends on the context and how the word is used in the sentence.