fighter

A person who fights; a combatant.

A warrior; fighting soldier.

A pugnacious, competitive person.

(eulogistic) A person with a strong determination to resist protracted or severe adversity, especially illness.

A class of fixed-wing aircraft whose primary purpose is that of shooting down other aircraft. Some of these (Fighter-Attack or Attack aircraft) also have a secondary purpose of attacking ground targets.

A boxer or participant in any martial art.

(colloquial) A firefighter.

(video games) A game with a focus on physical combat.