Noun

(en noun)

Mental acceptance of a claim as likely true.

*{{quote-magazine, date=2013-12-06, author=(George Monbiot)

, volume=189, issue=26, page=48, magazine=(The Guardian Weekly) , title= Why I'm eating my words on veganism – again , passage=The belief that there is no conflict between [livestock] farming and arable production also seems to be unfounded: by preventing the growth of trees and other deep vegetation in the hills and by compacting the soil, grazing animals cause a cycle of flash floods and drought, sporadically drowning good land downstream and reducing the supply of irrigation water.}}

Faith or trust in the reality of something; often based upon one's own reasoning, trust in a claim, desire of actuality, and/or evidence considered.

(countable) Something believed.

(uncountable) The quality or state of believing.

(uncountable) Religious faith.

(in the plural) One's religious or moral convictions.

Noun

(en noun)

A belief that a person has formed about a topic or issue.

I would like to know your opinions on the new systems.

In my opinion , white chocolate is better than milk chocolate.

Every man is a fool in some man's opinion .

Truth, in matters of religion, is simply the opinion that has survived. -

The judgment or sentiment which the mind forms of persons or things; estimation.

* 1606 , , I. vii. 32:

I have bought golden opinions from all sorts of people.

* South

Friendship gives a man a peculiar right and claim to the good opinion of his friend.

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

* 1597 , , V. iv. 47:

Thou hast redeemed thy lost opinion .

* Milton

This gained Agricola much opinion , who enterprises.

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

* 1590 , , V. i. 5:

Your reasons at / dinner have been sharp and sententious, pleasant / without scurrility, witty without affection, audacious / without impudency, learned without opinion , and / strange without heresy.

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

(European Union law) a judicial opinion delivered by an Advocate General to the European Court of Justice where he or she proposes a legal solution to the cases for which the court is responsible