Lamenting corrupt order (9)
I believe the answer is:
alignment
'order' is the definition.
(I've seen this before)
'lamenting corrupt' is the wordplay.
'corrupt' is an anagram indicator (a corrupted form).
'lamenting' anagrammed gives 'ALIGNMENT'.
(Other definitions for alignment that I've seen before include "co-operation" , "Act of straightening" , "political position" , "union" , "Tin mangle (anag)" .)