Crossword Genius

Havoc (5)

Ross

I think it could be either:

chaos

wreak

'havoc' is the definition.
(thesaurus)

This is all the clue.

(Other definitions for chaos that I've seen before include "A total shambles" , "Complete disorder and confusion" , "Anarchy" , "[MAYHEM]" , "Totally disordered state" .)

I've seen this clue in the Evening Standard and the Penny Press.
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