I / invāsor
noun

invāsor

gen. invāsōris · gender masculine · decl. 3rd
an invader; intruder; usurper
an invader, intruder, usurper (post-class.), Aur. Vict. Epit. 35; Cod. 7, 4, 5; Ambros. in Psa. 118, Serm. 6, § 20.