Complaint of untidiness (8)

I believe the answer is:

disorder

I believe this clue is a double definition.

'complaint' is the first definition.
(thesaurus)

'untidiness' is the second definition.
(thesaurus)

'of' is the link.

(Other definitions for disorder that I've seen before include "Riders do (anag)" , "breach of the peace" , "Indiscipline" , "Disturbance of normal working, as of mind or body" , "Confusion, mess" .)

I've seen this clue in The Globe and Mail, The Telegraph and The Guardian.

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