Oppugn :: Oppugn (v. t.) To fight against; to attack; to be in conflict with; to oppose; to resist.
Oppugnancy :: Oppugnancy (n.) The act of oppugning; opposition; resistance.
Oppugnant :: Oppugnant (a.) Tending to awaken hostility; hostile; opposing; warring.
Oppugner :: Oppugner (n.) One who opposes or attacks; that which opposes.