Definition of accidious in English:

accidious

Pronunciation /əkˈsɪdɪəs/

adjective

rare
  • Especially of a person: characterized by slothfulness.

Origin

Late Middle English; earliest use found in Pore Caitiff. From post-classical Latin accidiosus listless, slothful from accidia + classical Latin -ōsus. Compare Middle French accidieux.