With Shogo titles, sensei or sempai, depending on whether or not the individual is teaching. Shihan is sometimes used to refer to fifth dan, though I believe that it means Chief instructor, and is usually not related to grade.
In Taekwondo and hapkido, fifth dan is an ohdan and is generally considered a master, which is usually translated from sabumnim, but a KKW fourth dan can sign dan certificates. Also, kyosanim can be used for an instructor of any rank and literally means instructor (sabumnim does not actually mean master).
If a school uses english primarily, I have found that most instructors are simply called master regardless of rank and fifth dans are generally considered master in many systems by that level.
Personally, I am happy with Mister.
Daniel
In Taekwondo and hapkido, fifth dan is an ohdan and is generally considered a master, which is usually translated from sabumnim, but a KKW fourth dan can sign dan certificates. Also, kyosanim can be used for an instructor of any rank and literally means instructor (sabumnim does not actually mean master).
If a school uses english primarily, I have found that most instructors are simply called master regardless of rank and fifth dans are generally considered master in many systems by that level.
Personally, I am happy with Mister.
Daniel