ques·tion·ary I. \ˈkwes(h)chəˌnerē\noun (-es) Etymology:question (I) + -ary (n. suffix) : a collection of questions; especially: questionnaire < a questionary circulated two years ago to about 5000 laboratories — Lancet > < questionary containing 102 phrases and locutions — Wallace Rice > II. adjective Etymology:question (I) + -ary (adjective suffix) : put in the form of a question : asking or involving questions