"act or practice of being 'one up,'" 1952, from noun phrase one up "scoring one more point than one's opponent" (1919) + ending from sportsmanship, etc.
updated on August 25, 2019
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。