Save Gender Masculine & Feminine Usage Vietnamese Pronounced Pron. /vu˦ˀ˥/, /vʊw˧˨/, /vʊw˨˩˦/, /jʊw˨˩˦/ [key·simplify] Meaning & History From Sino-Vietnamese 羽 (vũ) meaning "feather" or 武 (vũ) meaning "military, martial".