This is the 178th most frequent Vietnamese word.
hoàn
"Hoàn" in Vietnamese means "complete," "finish," or "return," depending on context.
In this sentence, "hoàn" is part of "hoàn thành," which means "to complete." It is used to describe completing something, such as a task.
Cô ấy đã hoàn thành bài tập của mình.
She has completed her assignment.
Here, "hoàn" is part of "hoàn trả," meaning "to repay." It signifies the act of paying back something, such as money.
Họ có ý định hoàn trả món nợ trong vòng một tháng.
They intend to repay the debt within a month.
In this context, "hoàn" is part of "hoàn thiện," meaning "to perfect" or "to complete thoroughly." It indicates finalizing something to its most complete form.