exrehén

exrehén is masculine or feminine depending on context in Spanish.

former hostage

“En lo mejor de su ataque “al imperialismo” se presentó el Comandante del Regimiento acompañado de uno de los exrehenes, los que sin decir pío lo ensangrentaron a golpes.” — In the best of [someone’s] attack ‘on imperialism’ he was presented to the regiment commander accompanied by one of the former hostages, whom they wordlessly hit until he bled.

From ex- + rehén.