To try to overpower; to fiercely counteract.
To conduct or engage in (battle, warfare etc.).
To engage in combat with; to oppose physically, to contest with.
Of colours or other design elements: to clash; to fail to harmonize.
To contend in physical conflict, either singly or in war, battle etc.
To contend in physical conflict with each other, either singly or in war, battle etc.
To strive for something; to campaign or contend for success.
An occasion of fighting.
A physical confrontation or combat between two or more people or groups.
A conflict, possibly nonphysical, with opposing ideas or forces; strife.
The will or ability to fight.
A boxing or martial arts match.
To disturb the status quo or go against rules or conventions, as in an effort to get attention.
I'd just jump in and fix it, but that's not my job, and I don't want to rock the boat.