Dictionary.net

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"

Reputation.

That which is opined; a notion or conviction founded on probable evidence; belief stronger than impression, less strong than positive knowledge; settled judgment in regard to any point of knowledge or action.

Favorable estimation; hence, consideration; reputation; fame; public sentiment or esteem.

Obstinacy in holding to one's belief or impression; opiniativeness; conceitedness.

The formal decision, or expression of views, of a judge, an umpire, a counselor, or other party officially called upon to consider and decide upon a matter or point submitted.

To opine.

Reputation.

That which is opined; a notion or conviction founded on probable evidence; belief stronger than impression, less strong than positive knowledge; settled judgment in regard to any point of knowledge or action.

Favorable estimation; hence, consideration; reputation; fame; public sentiment or esteem.

Obstinacy in holding to one's belief or impression; opiniativeness; conceitedness.

The formal decision, or expression of views, of a judge, an umpire, a counselor, or other party officially called upon to consider and decide upon a matter or point submitted.

To opine.

Reputation.

A confident belief without full certainty.

Belief; as, that is my opinion; what one thinks about any subject; judgment; the statement of the law bearing upon a case; as, an opinion handed down by a judge; estimation; as, I have a favorable opinion of the man.

A conviction on probable evidence: judgment: notion: estimation.

Mental judgement; notion.

Settled judgment or belief of the mind; sentiment; judgment, without absolute certainty, founded on the evidence given; notion.

n. [Latin] A mental conviction of the truth of some statement founded on probable evidence ;— persuasion of the mind without proof or certain knowledge ; sentiment; notion ;— the judgment which the mind forms of persons or their qualities; especially favourable judgment; good esteem ;— also, fixed or settled judgment or belief ;— the formal decision of a judge, an umpire, a counsellor, &c.