opinion opinion /əˈpɪnjən/

noun

1. () A personal belief or judgment that is not founded on proof or certainty  ( persuasion , thought , sentiment , opinion , view )
   a personal belief or judgment that is not founded on proof or certainty
    My opinion differs from yours
   my opinion differs from yours
    I am not of your persuasion
   I am not of your persuasion
    What are your thoughts on Haiti?
   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  ( opinion , view )
   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
   his opinions appeared frequently on the editorial page
   
3. () A belief or sentiment shared by most people; the voice of the people  ( popular opinion , vox populi , opinion , public opinion )
   a belief or sentiment shared by most people; the voice of the people
    He asked for a poll of public opinion
   he asked for a poll of public opinion
   
4. () (law) the reason for a court's judgment (as opposed to the decision itself)  ( opinion , ruling )
   (law) the reason for a court's judgment (as opposed to the decision itself)
     The judge's ruling favored the plaintiff in the court case.
   The judge's ruling favored the plaintiff in the court case.
   
5. () (law) the legal document stating the reasons for a judicial decision  ( judgement , legal opinion , judgment , opinion )
   (law) the legal document stating the reasons for a judicial decision
    Opinions are usually written by a single judge
   opinions are usually written by a single judge
   
6. A vague idea in which some confidence is placed  ( opinion , belief , impression , feeling , notion )
   a vague idea in which some confidence is placed
    His impression of her was favorable
   his impression of her was favorable
    What are your feelings about the crisis?
   what are your feelings about the crisis?
    It strengthened my belief in his sincerity
   it strengthened my belief in his sincerity
    I had a feeling that she was lying
   I had a feeling that she was lying