yo-yo

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yo-yo / ˈyō ˌyō/ • n. (pl. -yos) a toy consisting of a pair of joined discs with a deep groove between them in which string is attached and wound, which can be spun alternately downward and upward by its weight and momentum.. ∎  [often as adj.] a thing that repeatedly falls and rises again: the yo-yo syndrome of repeatedly losing weight and gaining it again. ∎ inf. a stupid, insane, or unpredictable person.• v. (-yoes, -yoed) [intr.] move up and down; fluctuate: popularity polls yo-yo up and down with the flow of events. ∎  [tr.] manipulate or maneuver (someone or something): don't yo-yo me around.

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