turncoat
UK: ˈtɜːn.kəʊt | US: ˈtɜːrn.koʊt
n. a person who deserts one party, cause, or allegiance to join another, often for personal gain; a traitor or renegade.
The term "turncoat" originated in the 16th century, combining "turn" (from Old English tyrnan, meaning "to change direction") and "coat" (from Old French cote, meaning "outer garment"). Historically, it referred to someone who literally turned their coat inside out to disguise their allegiance—a symbolic act of betrayal. Over time, it evolved into a metaphor for political or ideological treachery, emphasizing the visual and practical act of switching sides.
The politician was labeled a turncoat after abandoning his party’s policies.
In wartime, deserters were often scorned as turncoats.
She accused her colleague of being a turncoat for joining the rival company.
The novel’s villain is a cunning turncoat who betrays his allies.
History remembers him as a turncoat who switched loyalties for power.