participante
/paɾtiθiˈpante/ · B2 · adj
participant, participator
🙋 participante = parti(cipate) + ante: one who takes a part (pars + capere)
From Latin pars (part) + capere (to take). A participante is someone who takes a part in something. Same root as English participant and participate, so the English word is a direct clue to the Spanish ending -ante, meaning one who does.