Tattered contents of trunk emptied (7)
I believe the answer is:
unkempt
'tattered' is the definition.
(thesaurus)
'contents of trunk emptied' is the wordplay.
'contents of' indicates the answer is hidden within the clue.
'UNKEMPT' is hidden within 'trunk emptied'.
(Other definitions for unkempt that I've seen before include "Not neatly combed" , "Of uncared for appearance" , "Messy" , "Not properly cared for" , "Bedraggled" .)