The Vietnamese word "khai chiến" means "to declare war." It is used in contexts where one country or group officially announces that they are starting a war against another.
In a more advanced context, "khai chiến" can also refer to initiating a major conflict or struggle, not necessarily limited to military action. For example, it can be used metaphorically to describe starting a significant competition or dispute in business or politics.
While "khai chiến" primarily means "to declare war," it can sometimes be used figuratively to describe engaging in a serious confrontation or conflict in various fields, such as business or sports.
In summary, "khai chiến" is a significant word in Vietnamese that denotes the formal act of declaring war. It is used in serious contexts and can sometimes be applied metaphorically in other fields.