A handy expression

Waza waza--"to go out of one's way" as in wasa wasa sumimasen, meaning "I'm sorry to have given you reason to do something that ordinarily you might not have had reason to do and really I would never have expected you to do in any case." Such as, for instance, being so kind as to bring me my mail.

Japanese can be very concise.

      - Jean-Claude Folgaritsen