ver·min·ous \ˈvərmənəs, ˈvə̄m-, ˈvəim-\adjective Etymology: Latin verminosus, from vermin- (as in verminare) + -osus -ous 1.: consisting of vermin : being vermin : noxious < a verminous brood > 2.: tending to be a breeding place of vermin; also: infested by vermin : filthy, offensive < verminous garbage > < a dirty verminous cellar > 3.: caused by or characterized by the presence of vermin < verminous disease > • ver·min·ous·lyadverb