诚恳 chéngkěn HSK7 sincere Origin Definitions Defs Strokes Stroke Words Sentences Sents 诚 誠 chéng adjective sincere (bound form) sincere; honest; authentic恳 懇 kěn adjective sincere (bound form) sincere; earnest; such as in 诚恳 chéngkěn or 恳切 kěnqiè