Definitions for "Interrogative"
Denoting a question; expressed in the form of a question; as, an interrogative sentence; an interrogative pronoun.
A word used in asking questions; as, who? which? why?
A word like which, whose, or why used to ask a question: Which is the more expensive? [pronoun] Whose lights are on? [adjective] Why are treasury bills a good investment? [adverb
a structure which is grammatically different from a declarative
Keywords:  nature, relating
relating to the use of or having the nature of an interrogation