This is the 18201st most frequent Korean word.
순진한
Innocent or naive.
순진하다 is used here to describe someone's characteristic of being naive or innocent.
그녀는 어려 보이지만 사실은 별로 순진하지 않다.
She looks young, but actually she is not very naive.
순진한 is used to characterize the innocence apparent in the children's smile.
아이들이 순진한 미소로 웃었다.
The children smiled with naive innocence.
순진한 is used to describe the simplicity and lack of guile in someone's actions.