Bienvenido a Reverso.net, servicio gratuito de traducción en línea para inglés, francés, alemán, italiano, ruso, chino
opinion 
1 assessment, belief, conception, conjecture, estimation, feeling, idea, impression, judgment, mind, notion, persuasion, point of view, sentiment, theory, view 
2 be of the opinion  be convinced, believe, be under the impression, conclude, consider, hold, judge, reckon, suppose, surmise, think 
3 matter of opinion  debatable point, matter of judgment, moot point, open question, open to debate, up to the individual