subs. (old).—A renegade, an apostate, ‘he that quits one and embraces another party’ (B. E.), ‘one who has changed his party from interested motives’ (GROSE). Hence TO TURN COAT (or A COAT) = to change, to pervert.

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  1579.  TOMSON, Calvin’s Sermons, Timothy, 107. 2. We shall see these backesliders whiche knowe the Gospell, reuolt and TURNE THEIR COATES.

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  1600.  SHAKESPEARE, Much Ado about Nothing, i. 1. 125. Beat. Courtesy itself must convert to disdain if you come in her presence. Ben. Then is courtesy a TURNCOAT.

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  d. 1674.  MILTON, Answer to Salmasius, Preface, 13. Crafty TURN-COAT! Are you not asham’d to shift hands thus in things that are Sacred?

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  1849.  MACAULAY, The History of England, viii. The Chief Justice himself stood aghast at the effrontery of this venal TURNCOAT.

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  1871.  GRENVILLE MURRAY, Member for Paris, xx. They blackguarded him … said he only wanted to get into the House to finger the salary and then TURN HIS COAT.

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  1888.  Westminster Review, cxxviii. 526. Mr. Bright should be the last man to charge a political opponent with ‘TURNING HIS COAT,’ for the change in his own position and sentiments is of the most sweeping character.

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