Definition of opinionative in English:

opinionative

Pronunciation /əˈpɪnjənətɪv/

adjective

  • 1Holding obstinately to one's own opinion; opinionated.

  • 2rare Of the nature of an opinion; expressing opinion.

Origin

Mid 16th century; earliest use found in Andrew Borde (c1490–1549), physician and author. From opinionate + -ive; compare -ative.