- a candidate, competitor, etc., regarded as certain to win.
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. 2018
- a person or thing that is certain to win or succeed
- a match or contest that is easy to win
Word Origin and History for shoo in
Online Etymology Dictionary, © 2010 Douglas Harper