Understated, faint (6)
I believe the answer is:
subtle
I believe this clue is a double definition.
'understated' is the first definition.
(I've seen this in another clue)
'faint' is the second definition.
(synonyms)
(Other definitions for subtle that I've seen before include "Tenuous; refined" , "Bustle in crafty, angenious way" , "Slight and difficult to analyse amid bustle" , "Such distinctions are hard to see" , "Not blatant" .)