This is the 7681st most frequent Korean word.
폐기해야
"폐기해야" means "must dispose" or "must discard."
In this sentence, '폐기해야' refers to the action of disposing or discarding items that are no longer useful.
이 낡은 옷은 더 이상 쓸모가 없으니 폐기해야 합니다.
This old clothes are no longer useful, so they must be discarded.
Here, '폐기해야' is used in the sense of nullifying or canceling agreements or legal documents.
법률적으로 문제가 되는 계약은 폐기해야 한다고 결정되었습니다.
It was decided that the contracts posing legal issues must be annulled.
In this context, '폐기해야' relates to the action of disposing harmful or unsafe items, such as food.