What type of word class is the really?

"Really" can function as several different word classes, depending on its context. Here's a breakdown:

* Adverb: This is the most common use. It modifies a verb, adjective, or another adverb to express degree or intensity.

* Example: "She is really tired." (modifies the adjective "tired")

* Interjection: It can express surprise, disbelief, or confirmation.

* Example: "Really? That's amazing!"

* Adjective: In very informal contexts, it can act as an adjective meaning "genuine" or "true."

* Example: "That's a really good idea." (less common, more informal)

To determine the word class, look at how "really" is used in the sentence.