まごころ 真心 Common word JLPT N1 LinksSentence search for 真心Sentence search for まごころSentence search for まこころKanji details for 真 and 心Edit in JMdict Noun, Noun which may take the genitive case particle 'no'1. sincerity; true heart; devotionOther forms真心 【まこころ】Notesまこころ: Out-dated or obsolete kana usage. Discussions Log in to talk about this word.