antagonism (n.)
- abhorrence
- abomination
- aggression
- aggressiveness
- allergy
- animosity
- animus
- antipathy
- antithesis
- argumentation
- aversion
- backlash
- bellicosity
- belligerence
- belligerency
- chauvinism
- clash
- collision
- combativeness
- competition
- con
- conflict
- confrontation
- confutation
- contention
- contentiousness
- contradiction
- contradistinction
- contraindication
- contrariety
- contrariness
- contrast
- controversy
- counteraction
- crankiness
- crotchetiness
- difference
- disagreement
- discord
- discordance
- discrepancy
- disgust
- disharmony
- disparity
- dissension
- dissent
- dissidence
- dissonance
- disunion
- disunity
- divergence
- diversity
- enmity
- faction
- ferocity
- fierceness
- fight
- fractiousness
- friction
- hate
- hatred
- horror
- hostility
- incongruity
- inconsistency
- inequality
- interference
- jingoism
- kick
- loathing
- malevolence
- malice
- malignity
- militancy
- militarism
- nausea
- negation
- negativeness
- nonconformity
- nullification
- obstinacy
- oppositeness
- opposition
- perverseness
- perversity
- polarity
- pugnacity
- quarrelsomeness
- rancor
- reaction
- recalcitrance
- recoil
- refractoriness
- repercussion
- repugnance
- repulsion
- resistance
- revolt
- rivalry
- showdown
- spite
- spitefulness
- strife
- truculence
- unfriendliness
- variance
- warmongering
- warpath
