noun turn·coat \-ˌkōt\

: a person who stops being a member of a group in order to join another group that opposes it

Full Definition of TURNCOAT

:  one who switches to an opposing side or party; specifically :  traitor

Examples of TURNCOAT

  1. <the plot of the story revolved around the gangster's relentless determination to learn the identity of the turncoat>

First Known Use of TURNCOAT



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