The Vietnamese word for to smile is
cười

Translations for to smile and their definitions

cười	©
1. n. a smile
Một nụ cười bằng mười thang thuốc bổ. - One smile is as effective as 10 portions of supplementary medicine.
2. v. to make an expression whereby the corners of the mouth are raised; to smile, to grin, to laugh, to sneer, to smirk, etc.
buồn cười - to want to laugh badly; to be hilarious
cười mỉm/mỉm cười - to smile or grin
cười đểu - to sneer or smirk