a belief or judgment that rests on grounds insufficient to produce complete certainty.

a personal view, attitude, or appraisal.

the formal expression of a professional judgment

to ask for a second medical opinion.

Law . the formal statement by a judge or court of the reasoning and the principles of law used in reaching a decision of a case.

a judgment or estimate of a person or thing with respect to character, merit, etc.

to forfeit someone's good opinion.

a favorable estimate; esteem

I haven't much of an opinion of him.

noun

reality , truth

noun

assessment , assumption , attitude , conception , conclusion , conjecture , estimate , estimation , eye * , fancy , feeling , guess , hypothesis , idea , imagining , impression , inclination , inference , judgment , mind , notion , persuasion , point of view , postulate , presumption , presupposition , reaction , say-so , sentiment , slant , speculation , supposition , surmise , suspicion , take * , theorem , theory , thesis , think * , thought , view , viewpoint , conviction , position , advice , belief , concept , consensus , decision , diagnosis , dictum , doctrine , dogma , evaluation , expression , parti pris , ruling , say , sentence , stereotype , tenet , think , unanimity , verdict