Conserve, use sparingly (7)
I believe the answer is:
husband
(Other definitions for husband that I've seen before include "manage carefully" , "Wife's partner" , "Use (resources) thriftily" , "Use resources economically" , "M arried man" .)
I believe the answer is:
husband
(Other definitions for husband that I've seen before include "manage carefully" , "Wife's partner" , "Use (resources) thriftily" , "Use resources economically" , "M arried man" .)