defender, advocate, supporter, defense attorney
El abogado defensor se puso en pie de un salto y gritó"¡Protesto!".
The defense attorney jumped to his feet and shouted, “Objection!”
Mi exnovio resultó ser defensor de la supremacía blanca.
My ex-boyfriend turned out to be a white supremacist.
Doctor Gonzaga, abogado defensor del almirante Massera.
Dr. Gonzaga, Admiral Massera’s defense attorney.
— Argentina 1985 (2022)