Indistinct or vague (4)
I believe the answer is:
hazy
I believe this is a double definition.
'indistinct' is the first definition.
(similar in meaning)
'vague' is the second definition.
(I've seen this before)
(Other definitions for hazy that I've seen before include "Slightly misty, vague" , "Vague, ill-defined" , "Obscured" , "Nebulous" , "Blurred" .)