Wiktionary
feuder
n. One who feuds.
Usage examples of "feuder".
Erect on a pole in the middle, towering well above the nodding fronds of the grass trees, was the pole bearing the trade shield which promised not only peace to those under it, but a three day sanctuary to any feuder or duelist who managed to win to it and lay hands upon its weathered standard.
They were fierce feuders and fighters and they went their own way, most of them lone-wolfing it until trouble showed to another Sackett.