미안하다
mianhada · TOPIK 1
to be sorry
未安 = not yet (未) + at peace (安): I am not at ease about it
미안 comes from hanja 未安, literally not-at-peace. Adding 하다 (to do/be) makes it a descriptive verb: to be uneasy over what you did, hence to be sorry. 安 is the same 안 as in 안녕 (peace) and 안전 (safety).