interrogative (adj.) Look up interrogative at Dictionary.com
"asking or denoting a question," c. 1500, from Late Latin interrogativus "pertaining to a question," from interrogat-, past participle stem of Latin interrogare "to ask, question, inquire; interrogate judicially, cross-examine," from inter- "between" (see inter-) + rogare "to ask, to question" (see rogation). As a noun, "word implying a question," 1520s. Related: Interrogatively.