What is the part of speech for word pretty?

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

* Adjective: Describes a noun, like "She has a pretty dress."

* Adverb: Modifies a verb, adjective, or another adverb, like "She sings pretty well."

* Interjection: Expresses surprise or agreement, like "Pretty! That's amazing!"

To determine the part of speech, you need to look at how the word is functioning in the sentence.