How To Spell perturbation?

Correct spelling: perturbation

What is the definition of perturbation?

  1. an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me"

Similar spelling words for perturbation?

Google Ngram Viewer results for perturbation:

This graph shows how "perturbation" have occurred between 1800 and 2008 in a corpus of English books.

What are the usage examples for perturbation?

  1. The consciousness of her own perturbation made it exceedingly difficult to turn around. – The Locusts' Years by Mary Helen Fee