English version

sparring partner

From Longman Dictionary of Contemporary English
Related topics: Sport
sparring partnerˈsparring ˌpartner noun [countable]  1 DSsomeone you practise boxing with2 ARGUEsomeone you regularly have friendly arguments with
Examples from the Corpus
sparring partnerDoubt acts as a sparring partner both to truth and error.The most telling exchanges came between Sir Lewis and his long-time sparring partner, shareholder James Middlemass.Hollins will be keeping his eye on Councilman Keith Beier, his ideological nemesis and verbal sparring partner on the council dais.
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