1.a personal belief or judgment that is not founded on proof or certainty;
my opinion differs from yours
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