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1. Dictionary

   per·tur·ba·tion

   /ˌpərdərˈbāSH(ə)n/

   noun

   • 1. anxiety; mental uneasiness: "she sensed her friend's perturbation"
   • ▪ a cause of anxiety or uneasiness: "Frank's atheism was more than a perturbation to Michael"
   • 2. a deviation of a system, moving object, or process from its regular or normal state or path, caused by an outside influence: "some minor perturbation in his house's cash flow"
   • ▪ a minor deviation in the course of a celestial body, caused by the gravitational attraction of a neighboring body.

   Word Origin late Middle English: from Latin perturbatio(n-), from the verb perturbare ‘disturb greatly’ (see perturb).

   Scrabble Points: 16

   • P

     3

   • E

     1

   • R

     1

   • T

     1

   • U

     1

   • R

     1

   • B

     3

   • A

     1

   • T

     1

   • I

     1

   • O

     1

   • N

     1

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