誠せい心しん誠せい意いMeaningsAdverbNounNo-adjective1. in all sincerity; with one's whole heart; whole-hearted devotion (Yojijukugo)Kanji used誠sincerity心heart意ideaPitch accentせいしんせいいComposed of誠せい心しんsincerityNoun誠せい意いsincerity; good faithNounExamples1彼かれは誠せい心しん誠せい意い、彼かの女じょに尽つくした。He devoted himself whole-heartedly to her.