noun, masculine/su.pe/plural: soupers
souper is masculine in French.
dinner (the main evening meal); a light meal eaten at night, after the main evening meal
“Veuillez m'excuser, je serai en retard pour le souper.” — Excuse me, I'll be late for dinner.
From Middle French soupper, from Old French soper, derived from supe, sope (“soup”) (modern French soupe).