Definition of perturbatious in US English:

perturbatious

adjective

rare
  • Characterized by or causing perturbation; troublesome.

Origin

Mid 17th century; earliest use found in John Taylor (1578–1653), poet. From classical Latin perturbāt-, past participial stem of perturbāre perturb + -ious, after perturbation.

Pronunciation

perturbatious

/ˌpəːtəˈbeɪʃəs/