Become blurred (6)
I believe the answer is:
smudge
(Other definitions for smudge that I've seen before include "Choking smoke" , "A smeared mark or stain" , "'Smear, daub (6)'" , "Messy mark" , "Blotch" .)
I believe the answer is:
smudge
(Other definitions for smudge that I've seen before include "Choking smoke" , "A smeared mark or stain" , "'Smear, daub (6)'" , "Messy mark" , "Blotch" .)