Disordered, cluttered (6)
I believe the answer is:
untidy
I believe this clue is a double definition.
'disordered' is the first definition.
(I've seen this in another clue)
'cluttered' is the second definition.
(synonyms)
(Other definitions for untidy that I've seen before include "Disorderly, sloppy" , "Careless, messy" , "Not neatly arranged" , "Disorderly, messy" , "Not neat or orderly" .)