parasitor
From LSJ
părăsītor: āri, v. dep. id.,
I to play the parasite, to sponge: parasitarier, Plaut. Stich. 4, 2, 54: parasitando pascere ventres suos, id. Pers. 1, 2, 3.
părăsītor, ārī, intr., faire le métier de parasite : Pl. Pers. 56 ; St. 634.