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English definition of “vacillate”

vacillate

verb [I]     /ˈvæs.ɪ.leɪt/ disapproving
to be uncertain what to do, or to change often between two opinions: Her mood vacillated between hope and despair.Doubt and ambivalenceHesitating vacillation     /ˌvæs.ɪˈleɪ.ʃən/ noun [C or U] Doubt and ambivalenceHesitating
(Definition of vacillate verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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