opinion

noun

1.
a personal belief or judgment that is not founded on proof or certainty
Derived from:
opine
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
Derived from:
opine
3.
a belief or sentiment shared by most people; the voice of the people
4.
the legal document stating the reasons for a judicial decision
5.
the reason for a court's judgment (as opposed to the decision itself)
6.
a vague idea in which some confidence is placed