In the sentence, "Where is the cat?", what part of speech is the word "where"?
3Frankly, I think no one knows. You can argue it's an adverb, you can argue that it's a conjunction, you can argue that it's a noun.– Hot LicksFeb 3, 2017 at 4:15
"Where" is an adverb telling us 'at what location.'
Wikipedia uses interrogative word or simply question-word. This word class is not contained in the traditional list of word classes. https://en.m.wikipedia.org/wiki/Interrogative_word
From that, I guess it would be an "interrogative pro-adverb." Mar 2, 2016 at 6:38
@H3br3wHamm3r81: or maybe more of an "interrogative pro-prepositional phrase". Relevant: Is “now” a “preposition”?– herissonFeb 3, 2017 at 4:22
The term is called a locative, since it orients you at a location.
This would be better if you included a linked dictionary definition of locative. Jul 19, 2021 at 7:07
Done. Thanks for the suggestion Jul 19, 2021 at 8:19
Locative is not a part of speech, but rather words or phrases expressing location. For example, in the yard is a prepositional phrase with a locative role in We stopped in the yard.– DW256Jul 19, 2021 at 8:28