definition of
opinion

[1] #1 opinion n. [sentiment, persuasion, view, thought] a personal belief or judgment that is not founded on proof or certainty; "my opinion differs from yours"; "I am not of your persuasion"; "what are your thoughts on Haiti?". wn

[2] #2 opinion n. [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". wn

[3] #3 opinion n. [public opinion, popular opinion, vox populi] a belief or sentiment shared by most people; the voice of the people; "he asked for a poll of public opinion". wn

[4] #4 opinion n. [legal opinion, judgment, judgement] the legal document stating the reasons for a judicial decision; "opinions are usually written by a single judge". wn

[5] #5 opinion n. [ruling] the reason for a court's judgment (as opposed to the decision itself). wn