一心 いっしん isshin one mind JLPT N1 adverb noun Common word Other meanings 2. wholeheartedness, one's whole heart The kanji in this word 一 one JLPT N5 · Strokes 1 心 heart, mind, spirit JLPT N4 · Strokes 4 In this level 一括 一気 一挙に 一見 一切 いっそ 一変 意図 営む 挑む Back to the JLPT N1 list Practise these words