a. [ For perlous, a contr. fr. perilous. ] [ 1913 Webster ]
1. Attended with peril; dangerous; as, a parlous cough. [ Archaic ] “A parlous snuffing.” Beau. & Fl. [ 1913 Webster ]
2. Venturesome; bold; mischievous; keen. [ Obs. ] “A parlous boy.” Shak. “A parlous wit.” Dryden. -- Par"lous*ly, adv. [Obs.] -- Par"lous*ness, n. [ Obs. ] [ 1913 Webster ]