per-diffĭcĭlis, e, adj.,
very difficult (class.), Cic. Part. 24, 84: quaestio, id. N. D. 1, 1, 1: navigatio, id. Att. 3, 8, 2.— Sup. : perdifficillimus aditus, exceedingly difficult , Liv. 40, 21.—Adv.: perdiffĭcĭlĭter , with great difficulty , Cic. Ac. 2 ( Luc. ), 15, 47.