combatant UK /ˈkɒm.bə.tənt/US /kəmˈbæ.tənt/adjective 2noun 1forms 3 adjective2 •Contending; disposed to contend.Their valours are not yet so combatant, Or truly antagonistick, as to fight — 1641 •Involving combat.He wished he were in a combatant service; he wanted to fight, fight. — 1921 noun1 •A person engaged in combat, often armed.Gladiators were combatants who fought to the death to entertain the public. formscombatants · more combatant · most combatant