Save Gender Masculine & Feminine Usage Vietnamese Pronounced Pron. /tʰwi˧˨ʔ/, /tʰwɪj˨˩ʔ/, /tʰʷɪj˨˩˨/, /tʰɪj˨˩˨/ [key·simplify] Other Forms FormsThuỵ Meaning & History From Sino-Vietnamese 瑞 (thụy) meaning "felicitous omen, auspicious".