Antagonistic
Pronunciation : An*tag`o*nis"tic
Part of Speech : An*tag`o*nis"tic*al
Definition : Defn: Opposing in combat, combating; contending or acting against; as, antagonistic forces. -- An*tag`o*nis"tic*al*ly, adv. They were distinct, adverse, even antagonistic. Milman.
Source : Webster's Unabridged Dictionary, 1913