Seek retribution, in a way (3)
I believe the answer is:
sue
'seek retribution in a way' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sue that I've seen before include "Prosecute at law" , "Apply" , "Litigious girl" , "Start proceedings against (someone)" , "Susan (dim.)" .)