oppugner

noun

1. Someone who oppugns; an opponent.

   “Revenge and Malice were as two violent oppugners on the one ſide, but Honeſty, Religion, Feare of God, with-held him on the other.”

   “Dennis, the fiercest oppugner of puns in ancient or modern times, professes himself highly tickled with the “a stick” chiming to “ecclesiastic”.”