opinion definition

1. a personal belief or judgment that is not founded on proof or certainty
• examples: my opinion differs from yours
• examples: I am not of your persuasion
• examples: what are your thoughts on Haiti?
2. 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
• examples: his opinions appeared frequently on the editorial page
3. the legal document stating the reasons for a judicial decision
• examples: opinions are usually written by a single judge
4. the reason for a court's judgment (as opposed to the decision itself)