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Webster 1913 Edition

Adj.

Obstinate in holding opinions; opinionated.

[Obs.]

–

O-pin′a-tive-ly

adv.

[Obs.]

Burton.

Sir T. More.

Adj.

Stiff in opinion. [Not used.]

opinative ‎(comparative more opinative, superlative most opinative)

Conjectural; expressing an opinion rather than a fact.
(obsolete) Opinionated, maintaining one's position stubbornly.
- 1621, Robert Burton, The Anatomy of Melancholy, New York Review of Books, 2001, p.44:
  [Socrates] was an illiterate idiot […], to philosophers and travellers, an opinative ass, a caviller, a kind of pedant […].

opinative f