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one-up

[wuhn-uhp]
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verb (used with object), one-upped, one-up·ping.
  1. to get the better of; succeed in being a point, move, step, etc., ahead of (someone): They one-upped the competition.
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Origin of one-up

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for one-upping

angle, beguile, bluff, exploit, finagle, finesse, jockey, maneuver, manipulate, operate, play, rig, wangle

British Dictionary definitions for one-upping

one-up

adjective
  1. informal having or having scored an advantage or lead over someone or something
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012