'opine' definitions:

Definition of 'opine'

(from WordNet)
verb
Express one's opinion openly and without fear or hesitation; "John spoke up at the meeting" [syn: opine, speak up, speak out, animadvert, sound off]
verb
Expect, believe, or suppose; "I imagine she earned a lot of money with her new novel"; "I thought to find her in a bad state"; "he didn't think to find her in the kitchen"; "I guess she is angry at me for standing her up" [syn: think, opine, suppose, imagine, reckon, guess]

Synonyms of 'opine'

From: Moby Thesaurus