noun
true character; true heart; true spirit
Refers to a person's genuine inner nature, spirit, or moral core. Often used in literary or philosophical contexts to contrast with outward appearance or pretense.
彼の正気は、困難な状況でも揺るがなかった。
His true spirit remained unshaken even in difficult circumstances.
この作品には作者の正気がよく表れている。
This work clearly reveals the author's true character.
Composed of 正 (correct, true) and 気 (spirit, energy). The exact historical derivation is uncertain, but the combination naturally conveys the idea of one's genuine inner spirit or character.