I. ˌin-tə-ˈrä-gə-tiv adjective
Date: 15th century
1.
a. : used in a question
b. : having the form or force of a question
2. : inquisitive , questioning
• in·ter·rog·a·tive·ly adverb
II. noun
Date: 1522
1. : a word (as who, what, which ) or a particle (as Latin -ne ) used in asking questions
2. : question 1a