Mouth honor is a term used to describe empty flattery or praise given to someone without any sincere intention. It has many synonyms that can be used interchangeably depending upon the context. Some of the synonyms are insincere compliment, false praise, empty flattery, lip service, flattering remark, false commendation, empty words, and empty accolade. All these terms indicate a lack of genuine appreciation and admiration for someone, and they are often used to criticize someone's insincerity. It is crucial to use the right synonym for mouth honor to express the actual meaning of the word and convey the intended message effectively.