Dishevelled, messy (6)
I believe the answer is:
untidy
This clue is a double definition.
'dishevelled' is the first definition.
(similar in meaning)
'messy' is the second definition.
(synonyms)
(Other definitions for untidy that I've seen before include "in a state" , "Scruffy" , "Not neatly arranged" , "Disorderly, slipshod" , "Disorderly, sloppy" .)