Definition of "opinionative"

opinionative

adjective
comparative more opinionative, superlative most opinionative
1. Of, pertaining to, being, or expressing opinion.
  Quotations
  The courts of the United States generally allow opinionative evidence concerning value.
  1980, Wiley Daniel Rich, Legal Responsibilities and Rights of Public Accountants, page 190
2. (of persons) Opinionated.
  Quotations
  They were not only opinionative, peevish, covetous, morose, vain, talkative, but incapable of friendship, and dead to all natural affection.
  1726 October 28, [Jonathan Swift], Travels into Several Remote Nations of the World. […] [Gulliver’s Travels], volume II, London: […] Benj[amin] Motte, […], part III (A Voyage to Laputa, Balnibarbi, Glubbdubdribb, Luggnagg, and Japan)
  He was a stout, squat figure, with a square face and broad black eyebrows, that announced him to be opinionative and disputatious.
  1823, Sir Walter Scott, chapter 21, in Quentin Durward