約
약속할 요, treaty, agreement, covenant (9)
約
대략 약, 맹세할 약, 간소할 약, 맺을 약
婚
혼인할 혼, get married; marriage, wedding (11)
者
놈 자, that which; he who; those who (10)
約婚者
약혼자
a fiance, an engaged person