Definition of opinionnaire in English:

opinionnaire

Pronunciation /əˈpɪnjənɛː/

noun

(also opinionaire)
  • A formulated series of statements, each of which members of a selected group are requested to endorse or reject, used to gather information in a survey; (also, more widely) a questionnaire.

Origin

1930s; earliest use found in American Sociological Review. From opinion + -aire.