Crass, unseemly (9)
I believe the answer is:
tasteless
This clue is a double definition.
'crass' is the first definition.
(I've seen this in another clue)
'unseemly' is the second definition.
(I've seen this before)
(Other definitions for tasteless that I've seen before include "Lacking in aesthetic judgement" , "Insipid - inappropriate - dull" , "Lacking flavour or aesthetic appreciation" , "Vapid" , "improper" .)