Simple Definition of turncoat

from our Learner's Dictionary

turncoat

noun

ˈtɚnˌkoʊt

plural turncoats

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

a political turncoat

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“Turncoat.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/turncoat. Accessed 21 Jun. 2026.

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