W: (n) antagonism [Related to: antagonistic] (the relation between opposing principles or forces or factors) "the inherent antagonism of capitalism and socialism"
S: (adj) antagonistic, antipathetic, antipathetical (characterized by antagonism or antipathy) "slaves antagonistic to their masters"; "antipathetic factions within the party"
S: (adj) antagonistic (arousing animosity or hostility) "his antagonistic brusqueness"; "Europe was antagonistic to the Unites States"