Attractive and marriageable (6)
I believe the answer is:
nubile
I believe this clue is a double definition.
'attractive' is the first definition.
(I've seen this before)
'marriageable' is the second definition.
('nubile' can be a synonym of 'marriageable')
'and' acts as a link.
(Other definitions for nubile that I've seen before include "fit for match" , "Of young woman, marriageable or attractive" , "Of girls or women who are eligible to marry" , "Of marriageable age?" , "Old enough to marry" .)