Wrong, so man whinges (5)
I believe the answer is:
moans
'whinges' is the definition.
(I've seen this before)
'wrong so man' is the wordplay.
'wrong' is an anagram indicator.
'so'+'man'='soman'
'soman' with letters rearranged gives 'MOANS'.
(Other definitions for moans that I've seen before include "Expressions of unhappiness" , "Trivial complaints" , "Mournful sounds" , "Whinges" , "Complains" .)