남이사
nam-isa
ENUsed in place of 남이야 (nam-iya, “as for other people”) when dismissing people who are too nosy, with a connotation of "none of your business".
부사
Ne'e sala? Hatete mai ami / 틀렸나요? 알려 주세요
남이사 뭘 하든 니가 뭔 상관인데?
Why do you even care about what other people are doing?