Noun
1. a personal belief or judgment that is not founded on proof or certainty;
"my opinion differs from yours""what are your thoughts on Haiti?"2. a belief or sentiment shared by most people; the voice of the people;
"he asked for a poll of public opinion"3. a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof;
"his opinions appeared frequently on the editorial page"4. the legal document stating the reasons for a judicial decision;
"opinions are usually written by a single judge"5. the reason for a court's judgment (as opposed to the decision itself)
6. a vague idea in which some confidence is placed;
"his impression of her was favorable""what are your feelings about the crisis?""it strengthened my belief in his sincerity""I had a feeling that she was lying"