This is the 17529th most frequent Korean word.
성인이라고
"성인이라고" means "as an adult" or "considered an adult."
The phrase '성인이라고' here emphasizes that he is categorized as an 'adult', implying responsibility.
그는 성인이라고 책임을 져야 한다.
He must take responsibility because he is an adult.
Here, '성인이라고' conveys the conditional notion of being considered an adult while highlighting a contrast.
성인이라고 모두가 성숙한 행동을 하는 것은 아니다.
Not everyone acts maturely just because they are adults.
'성인이라고' in this sentence is used to express the assertion made by the friend that they are an adult, thus justifying their actions.