인성이 · 인성을
character, personality, human nature
Example
학교에서는 성적만큼 인성 교육도 중요해요.
At school, character education matters as much as grades.
Word parts
인 person+성 nature
Literally 'human nature'.
Good to know
Koreans often judge someone with 인성이 좋다/나쁘다 'a good/bad person at heart'.
Related words