Preopinion :: Preopinion (n.) Opinion previously formed; prepossession; prejudice.
Self-opinion :: Self-opinion (n.) Opinion, especially high opinion, of one's self; an overweening estimate of one's self or of one's own opinion..
Self-opinioned :: Self-opinioned (a.) Having a high opinion of one's self; opinionated; conceited.
Unpinion :: Unpinion (v. t.) To loose from pinions or manacles; to free from restraint.