Expressing an opinion is a vital part of communication. There are several different words and phrases that can be used in place of "express opinion." For example, you could say that someone voiced their point of view, shared their perspective, or offered their thoughts. Other synonyms for expressing an opinion include divulging one's beliefs, airing their ideas, stating their position, or putting forth their viewpoints. These expressions can be used interchangeably to convey a similar meaning. Using different synonyms can add variety to your speech and writing and help you communicate more effectively.