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tinkerman

British  
/ ˈtɪŋkəˌmən /

noun

  1. informal soccer a manager or coach who continually experiments by changing the personnel or formation of a team from game to game

"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

Example Sentences

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Hysterical tinkerman Ralf Rangnick makes 11 changes for the second game in a row, reverting to the team that beat Crystal Palace last weekend.

From The Guardian • Dec. 11, 2021

France do offer temptations to a tinkerman, so rich are their seams of talent.

From The Guardian • Jan. 30, 2011