Steal unfortunate result (6)
I believe the answer is:
rustle
'steal' is the definition.
(I know that rustle is a more specific form of the action steal)
'unfortunate result' is the wordplay.
'unfortunate' indicates an anagram.
'result' anagrammed gives 'RUSTLE'.
(Other definitions for rustle that I've seen before include "take animals" , "Steal livestock - make a little noise" , "Swish - steal cattle" , "Steal 2" , "Wind-in-leaves noise" .)