Went after, in a way (4)
I believe the answer is:
sued
'went after in a way' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sued that I've seen before include "Brought an action against" , "Took legal action against" , "Started legal proceedings against (someone)" , "Prosecuted" , "taken to court" .)