| Noun | 1. | Vietnamese - a native or inhabitant of Vietnam | |
| 2. | Vietnamese - the Mon-Khmer language spoken in VietnamMon-Khmer - a branch of the Austro-Asiatic languages | |
| Adj. | 1. | Vietnamese - of or relating to Vietnam; "the Vietnamese countryside" | |
| 2. | Vietnamese - of or relating to the vietnamese language; "Vietnamese tones" | |
| 3. | Vietnamese - of or relating to or characteristic of the people of Vietnam; "Vietnamese boat people" | |