Becoming (6)
I believe the answer is:
seemly
'becoming' is the definition.
(I know that becoming can be written as seemly)
This is all the clue.
(Other definitions for seemly that I've seen before include "Decorous or proper" , "Conforming to good taste" , "'Decorous, dignified (6)'" , "Part of the foot" , "Becoming, decent" .)