n. [ Gr. 'antagw`nisma, fr. 'antagwni`zesqai to struggle against; 'anti` against + 'agwni`zesqai to contend or struggle, 'agw`n contest: cf. F. antagonisme. See Agony. ] Opposition of action; counteraction or contrariety of things or principles. [ 1913 Webster ]
☞ We speak of antagonism between two things, to or against a thing, and sometimes with a thing. [ 1913 Webster ]