For a physical confrontation:
* Battle: A violent conflict, often with weapons.
* Combat: A fight, especially one involving military forces.
* Brawl: A noisy and disorganized fight.
* Skirmish: A short and minor fight.
* Clash: A sudden and violent confrontation.
* Spar: To engage in a practice fight, especially in boxing.
For a verbal argument:
* Dispute: A disagreement, often heated.
* Argument: A verbal exchange of opposing views.
* Contend: To argue or debate.
* Squabble: A petty argument.
* Row: A noisy argument.
* Quarrel: A disagreement that causes anger.
For a struggle against something:
* Resist: To oppose or fight against something.
* Combat: To fight against something harmful, like disease.
* Struggle: To make great effort to overcome something difficult.
* Contend with: To deal with a difficult situation.
* Battle: To fight against a difficult challenge.
Other synonyms:
* Conflict: A state of disagreement or opposition.
* Confrontation: A direct encounter with opposition.
* Competition: A rivalry or contest.
* Opposition: Resistance to a plan or idea.
* Challenge: Something difficult to overcome.
Choose the best synonym based on the specific context of your sentence.