Sincere Sincere synonyms genuine sincere and genuine heartfelt sincere and heartfelt earnest sincere and earnest honest sincere and honest true sincere and true real sincere and real candid sincere and candid unfeigned sincere and unfeigned unaffected sincere and unaffected bona fide sincere and bona fide Full list of synonyms (982) Sincere antonyms insincere sincere and insincere dishonest sincere and dishonest false sincere and false deceitful sincere and deceitful feigned sincere and feigned devious sincere and devious hypocritical sincere and hypocritical affected sincere and affected artful sincere and artful disingenuous sincere and disingenuous Full list of antonyms (99) Share this picture Share this image Share this picture Share this image