Indistinct or imprecise (5)
I believe the answer is:
vague
I believe this is a double definition.
'indistinct' is the first definition.
(I've seen this in another clue)
'imprecise' is the second definition.
(synonyms)
(Other definitions for vague that I've seen before include "Obscure, undefined" , "Inexact" , "Ill-defined" , "Uncertain, imprecise" , "Amorphous" .)