In Korean martial arts, what is the appropriate title for a master?

In Korean martial arts, the title of "Sabum-Nim" is specifically reserved for a master instructor, typically someone who holds a high rank and has significant experience in teaching and practicing the art. This title embodies a deep respect and indicates that the individual has not only mastered the techniques and philosophies of the martial art but is also recognized as a mentor and leader within the community.

The other titles, while relevant in the context of martial arts, denote different levels of expertise or roles. For example, "Kyo Sa Nim" refers to a certified instructor, often a lower rank than a master. "Kwan Chang Nim" is a title used for the head of a school or federation, indicating a broader administrative role rather than a focus solely on teaching. "Jo Kyo Nim" is typically associated with an assistant instructor role, which again implies a rank lower than that of a master. Each title serves a specific purpose within the hierarchy of martial arts, but "Sabum-Nim" is undeniably the one that conveys mastery.