- adversary: an opponent
- aggression: a bold, unprovoked attack. Hostile action or behavior
- contradict: to express the opposite of, to deny, to be contrary to
- controversy: a dispute between sides holding opposite views. an argument or debate
- discord: a lack of agreement between persons or groups. A combination of harsh unpleasant sounds.
- embroil: to involve in an argument with. to throw into confusion, to entangle
- haggle: to bargain, as over price.
- skirmish: a minor battle, often part of a larger battle. a preliminary conflict.
- stalemate: a deadblock, a situation in which progress has come to a halt.
- strife: bitter conflict, a heated and often violent disagreement. A struggle between rivals.