Charlton T. Lewis, Charles Short, A Latin Dictionary

I.dangerous, hazardous, perilous (class.): “in nosmetipsos periculosi,” incurring danger, endangering ourselves, Cic. Att. 13, 27, 1: “consuetudo,” id. Ac. 2, 21, 68: “periculosum et grave bellum,” id. Imp. Pomp. 2, 4: “periculosum et infestum iter,” id. Phil. 12, 10, 25: “vulnera,” id. ib. 14, 9, 26: “curationes,” id. Off. 1. 24, 83.—With dat.: “populo Romano periculosum,” Caes. B. G. 1, 33.—Neutr. in abl. absol.: “juxta periculoso, ficta seu vera promeret,” since it was equally perilous, Tac. A. 1, 6.—Neutr. plur. as subst.: “in castris quoque periculosa fortissimis imperantur,” Sen. Prov. 4, 8: “inimicitiae,” Tac. G. 21.— Sup.: “locus,” Cic. Phil. 7, 3, 8: “annus,” Liv. 27, 35: “bellum,” Flor. 1, 17, 5.—Hence, adv.: pĕrīcŭlōsē , dangerously, hazardously, perilously, with danger, risk, or peril (class.): “periculose aegrotans,” Cic. Att. 8, 2, 3: “periculose dico,” id. Phil. 7, 3, 8: “periculose a paucis emi, quod multorum esset,” Sall. J. 8, 2.—Comp.: nihilo periculosius, without any greater risk, Auct. B. Alex. 64.—Sup.: periculosissime aliquid facere, with the greatest danger, Sen. de Ira, 3, 22, 2.