opinion
noun
she did not share her husband's opinion:
belief, judgement, thought(s), school of thought, thinking, way of thinking, mind, point of view, view, viewpoint, outlook, angle, slant, side, attitude, stance, perspective, position, standpoint;
theory, tenet, conclusion, verdict, estimation, thesis, hypothesis, feeling, sentiment, impression, reflections, idea, notion, assumption, speculation, conception, conviction, contention, persuasion, creed, dogma.
□ a matter of opinion□ be of the opinion□ in my opinion
I'm of the opinion that this is not necessary:
believe, think, consider, maintain, imagine, be of the view, reckon, guess, estimate, conjecture, fancy, suspect, feel, have a/the feeling, assume, presume, take it, suppose, expect, gather;
contend, put forward, be convinced, be of the conviction, reason, deduce, conclude, theorize, hypothesize, take as a hypothesis;
North American, informal allow;
formal opine;
archaic ween.
opinion Oxford Dictionary of English