Definition of perturbment in US English:

perturbment

noun

rare
  • Perturbation.

Origin

Early 20th century; earliest use found in ‘Henry Seton Merriman’ (1862–1903), novelist (real name Hugh Scott). From perturb + -ment. Compare Middle French perturbement, Old Occitan perturbamen, Italian perturbamento mental perturbation.

Pronunciation

perturbment

/pəˈtəːbm(ə)nt/