Per″il‐ous (?), a. [OF. perillous, perilleus, F. périlleux, L. periculosus. See Peril.] [Written also perillous.] 1. Full of, attended with, or involving, peril; dangerous; hazardous; as, a perilous undertaking.
Infamous hills, and sandy, perilous wilds. Milton.
2. Daring; reckless; dangerous. Latimer.
For I am perilous with knife in hand. Chaucer.
— Per″il‐ous‐ly, adv. — Per″il‐ous‐ness, n.