The importantce of Euphemism in speaking especially in public is done to maintain harmony in society. Euphemism itself is derived from the Greek which is eu means well and phenai means to speak. It is defined as a word or expression which is mild or indirect that substituted for one considered to be too hars or blunt when referring to something unpleasant or embarrassing (Oxford Dictionary). As we know that language and culture are two things that cannot be separated, the usage of euphemism in conversation especially in traditional ceremonial is often occurred. This paper described the euphemism in Mandailing ethnic especially for traditional ceremonial which is called as mangupa that often be done in marriage ceremonial. This research is q...