sincere

Universal Words adjective (superlative sincerest, no comparative) 1 (of feelings, beliefs or behaviour) showing what you really think or feel SYNGENUINE: a sincere attempt to resolve the problem * sincere concern / gratitude / regret * Please accept our sincere thanks. * a sincere apology 2 ~ (in sth) (of a person) saying only what you really think or feel SYNHONEST: He seemed sincere enough when he said he wanted to help. * She is never completely sincere in what she says about people. OPPINSINCERE sincerity noun [U]: The sincerity of his beliefs is unquestionable. * She spoke with total sincerity. * I can say in all sincerity that I knew nothing of these plans.