What part of speech is naught?

"Naught" can be a few different parts of speech depending on its use in a sentence:

* Noun: Meaning "nothing" or "zero."

* Example: "He had naught to his name."

* Adjective: Meaning "worthless" or "of no value."

* Example: "His efforts were naught."

* Adverb: Meaning "not at all" or "in no way."

* Example: "He naught cared for her opinion."

It's important to look at the context of the sentence to determine which part of speech "naught" is acting as.