To outmaneuver (an opponent), especially with the aid of some extra resource:
"one-up." YourDictionary, n.d. Web. 14 January 2019. <https://thesaurus.yourdictionary.com/one-up>.
one-up. (n.d.). Retrieved January 14th, 2019, from https://thesaurus.yourdictionary.com/one-up
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