īnfēstē adv.with comp.and sup.
infestus, inimically, violently, outrageously : quae in nos fecerint, L.: infestius circumscindere, L.: infestissime contendere.
infestē, adv., v. infestus fin. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.