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English definition of “fluctuate”

fluctuate

verb [I] uk   /ˈflʌk.tju.eɪt/ us  
C2 to change, especially continuously and between one level or thing and another: Vegetable prices fluctuate according to the season. Her wages fluctuate between £150 and £200 a week. Her weight fluctuates wildly. fluctuating pricesChangingAdapting and modifying Adapting and attuning to somethingChanging frequently
fluctuation
noun [C or U] uk   /ˌflʌk.tjuˈeɪ.ʃən/ us  
fluctuations in share prices/the exchange rate/temperatureChange and changes
(Definition of fluctuate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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