perturbationnoun
uk/ˌpɜː.təˈbeɪ.ʃən/us/ˌpɝː.t̬ɚˈbeɪ.ʃən/perturbation noun (WORRY)
[ U ] formal worry
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Anxiety and worry - general words
- agitation
- angst
- anxiety
- apprehension
- consternation
- discomfit
- discomfort
- misgiving
- nerve
- oppression
- overwork
- panic attack
- preoccupation
- restive
- skittish
- strain
- trepidation
- uneasiness
- vexation
- yip
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perturbation noun (CHANGE)
[ C or U ] specialized physics a small change in the regular movement of an object:
Perturbations in the orbit of the planet Uranus led to the discovery of Neptune in 1846.
Thesaurus: synonyms and related words
Shaking, swinging and vibrating
- agitate
- brandish
- churn
- flourish
- fluff sth up
- flutter
- jitter
- joggle
- resonate
- rocky
- shake
- swing
- teeter
- throb
- totter
- tremble
- tremulous
- vibrate
- wag
- worry
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