If wrong, a chap gets punished (5)
I believe the answer is:
fined
'punished' is the definition.
(similar in meaning)
'if wrong a chap' is the wordplay.
'wrong' indicates anagramming the letters.
'a chap' becomes 'ned' ().
'if' anagrammed gives 'fi'.
'fi'+'ned'='FINED'
'gets' is the link.
(Other definitions for fined that I've seen before include "Imposed financial penalty on" , "Mulcted" , "Ordered to pay penalty" , "Fed in (anag.)" .)