yes

The word "vâng" is the standard, polite way to express agreement or affirmation in Vietnamese. It functions as a respectful "yes," usually used when speaking to someone older, of higher status, or in a formal setting. It carries a sense of deference and acknowledges the listener's authority or seniority. In more casual settings, you might hear "ừ" (for peers) or "dạ" (a softer, highly polite particle often used at the beginning of sentences). While "vâng" is a direct translation of "yes," in many contexts, Vietnamese speakers prefer to repeat the verb of the question to confirm (e.g., "Are you eating?" → "Eating" instead of "Yes").
In conversation
Accepting a task from a boss
Em hoàn thành báo cáo này trước chiều nay nhé?
You will finish this report by this afternoon, right?
Vâng, em sẽ làm xong ạ.
Yes, I will get it done.
'Vâng' combined with 'ạ' creates a very polite, professional tone.
Confirming a schedule
Ngày mai mình gặp nhau lúc 8 giờ được không?
Can we meet at 8 o'clock tomorrow?
Vâng, được chứ.
Yes, that works.
Using 'vâng' here shows respect to the person you are making plans with.
Examples
Vâng, tôi hiểu rồi.
Yes, I understand.
Vâng, mời anh vào nhà.
Yes, please come inside.
Vâng, mọi việc đã được chuẩn bị xong xuôi.
Yes, everything has been prepared completely.