na-adjective, noun
purity; pure-heartedness
Describes a person's character as pure, sincere, and untainted. Often used in literary or formal contexts.
彼の精一な人柄に心を打たれた。
I was moved by his pure-hearted character.
精一な精神で芸術に打ち込む。
Devote oneself to art with a pure spirit.