What is the part of speech smart?

"Smart" can be several parts of speech depending on how it is used in a sentence:

* Adjective: Describing a noun. Example: "She is a smart woman."

* Adverb: Modifying a verb, adjective, or another adverb. Example: "She dresses smartly."

* Noun: Referring to intelligence or cleverness. Example: "He has a lot of street smarts."

So, to determine the part of speech of "smart," you need to look at how it is used in a particular sentence.