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oscillate

verb [I]
 
 
/ˈɒs.ɪ.leɪt/ US  /ˈɑː.səl.eɪt/

Definition

to move repeatedly from one position to another: The needle on the dial oscillated between 'full' and 'empty'.Shaking, swinging and vibrating formal If you oscillate between feelings or opinions, you change repeatedly from one to the other: My emotions oscillate between desperation and hope.Changing your mind specialized (of a wave or electric current) to change regularly in strength or directionChanging direction oscillation
 
 
/ˌɒs.ɪˈleɪ.ʃən/ US  /ˌɑː.səlˈeɪ-/ noun [C or U] formal or specialized
(Definition of oscillate verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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