This is the 836th most frequent Vietnamese word.
vậy
"Vậy" in Vietnamese means "so," "thus," "then," or "in that case," depending on context.
In this sentence, "vậy" is used to denote a conclusion or result.
Vậy là chúng ta đã hoàn thành công việc.
So we have completed the work.
In this context, "vậy" is used in a conditional form to establish a premise.
Nếu vậy, tôi sẽ đồng ý với bạn.
If so, I will agree with you.
Here, "vậy" acts as a bridging word, connecting ideas and questions.