[ shoo-in ]
/ ˈʃuˌɪn /
a candidate, competitor, etc., regarded as certain to win.
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Origin of shoo-in
1945–50, Americanism; noun use of verb phrase shoo in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for shoo in
a person or thing that is certain to win or succeed
a match or contest that is easy to win
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