Meaning of “yo-yo” in the English Dictionary

"yo-yo" in British English

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yo-yonoun [ C ]

uk /ˈjəʊ.jəʊ/ us /ˈjoʊ.joʊ/ plural yo-yos trademark

yo-yoadjective

uk /ˈjəʊ.jəʊ/ us /ˈjoʊ.joʊ/

(Definition of “yo-yo” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"yo-yo" in American English

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yo-yonoun [ C ]

us /ˈjoʊ·joʊ/ plural yo-yos

a toy consisting of a circular object that can be made to roll down and up a string that is tied to your hand if you spin the object and move your hand quickly at the same time

yo-yoadjective [ not gradable ]

us /ˈjoʊ·joʊ/ fig.

characterized by large and sudden changes from one condition to another:

Research on yo-yo dieting indicates that going on and off diets repeatedly will make weight control difficult in the long run.

(Definition of “yo-yo” from the Cambridge Academic Content Dictionary © Cambridge University Press)