* Adverb: This is the most common usage. It modifies a verb, adjective, or another adverb, expressing intensity or completeness.
* Example: "I'm totally exhausted." (modifies the adjective "exhausted")
* Adjective: This usage is less common, but it can function as an adjective meaning "complete" or "absolute."
* Example: "The silence was totally unnerving." (modifies the noun "silence")
* Interjection: It can also be used as an interjection to express agreement or emphasize a statement.
* Example: "Totally! I'm coming with you."
So, to determine the part of speech for "totally", you need to look at its role in the sentence.