Save Gender Masculine Usage Vietnamese Pronounced Pron. /hiəw˧˨ʔ/, /hiw˨˩ʔ/, /hiw˨˩˨/ [key·simplify] Meaning & History From Sino-Vietnamese 效 (hiệu) meaning "effect, result". It can also be an altered form of 昊 (hạo) meaning "sky, heaven", changed in order to avoid homophony with the name of emperor Kiến Phúc (full name Nguyễn Phúc Hạo).