turncoat

[ turn-koht ]
/ ˈtɜrnˌkoʊt /

noun

a person who changes to the opposite party or faction, reverses principles, etc.; renegade.

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Would a turncoat by any other name sound as treasonous? Yup!

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Origin of turncoat

First recorded in 1550–60; turn + coat

Example sentences from the Web for turncoat

British Dictionary definitions for turncoat

turncoat
/ (ˈtɜːnˌkəʊt) /

noun

a person who deserts one cause or party for the opposite faction; renegade