죄송하다
joesonghada · TOPIK 1
to be sorry (formal)
罪悚 = guilt (罪) + dread (悚): to feel fearful with guilt
죄 (罪) means crime or guilt, the same 죄 as in 죄 (sin) and 범죄 (crime). 송 (悚) means to be afraid or uneasy. Add 하다 and you get a formal apology that literally says: I am uneasy with guilt.