IPA: /kəmˈbætər/
KK: /kəmˈbætər/
A person who fights or struggles against something, often in a physical or metaphorical sense.
The combater showed great bravery in the face of danger.
Combater is formed from "com-" (meaning together) and "battere" (meaning to beat). The word refers to someone who fights or beats against an opponent, often in a military or competitive context.
Think of people 'together' ('com-') 'beating' ('battere') against each other in a fight — that's what a combater does.