- (Hà Nội) IPA(key): [l̪ʊwʔk͡p̚˧ˀ˨ʔ]
- (Huế) IPA(key): [lʊwʔk͡p̚˨ˀ˨ʔ]
- (Hồ Chí Minh City) IPA(key): [l̻ʲʊwʔk͡p̚˨ˀ˧ʔ]
- Homophone: Lục
- (Sino-Vietnamese) six
- The word is not quite often used. The most common use of it is to refer to one of the seven colors of a rainbow, as in the listing "đỏ, vàng, cam, lục, lam, chàm, tím".