과덕지인in English:a person who is overly virtuous or moralistic

Examples
with 과덕지인.

• 그는 과덕지인처럼 행동해서 친구들이 그를 피한다.geuneun gwadeokjiincheoreom haengdonghaeseo chingudeuri geureul pihanda.He acts like a person who is overly virtuous, so his friends avoid him.