Plunder piled so high (7)
I believe the answer is:
despoil
'plunder' is the definition.
('despoil' can be a synonym of 'plunder')
'piled so high' is the wordplay.
'high' is an anagram indicator (can mean drunk or on drugs and hence disordered).
'piled'+'so'='piledso'
'piledso' with letters rearranged gives 'DESPOIL'.
(Other definitions for despoil that I've seen before include "Plunder (a place)" , "Plunder, devastate" , "Ravage" , "Plunder completely" , "sack" .)