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vacillate

verb [I]
 
 
/ˈvæs.ɪ.leɪt/ disapproving

Definition

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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