Polite, respectable (6)
I believe the answer is:
decent
This clue is a double definition.
'polite' is the first definition.
(thesaurus)
'respectable' is the second definition.
(similar in meaning)
(Other definitions for decent that I've seen before include "Presentable" , "Obliging or modest" , "Moral; fitting" , "Sufficient" , "Sufficiently clothed" .)