[f. QUACK sb.1 + -ERY.] The characteristic practices or methods of a quack; charlatanry.

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1709–11.  J. Spinke (title), Quackery Unmask’d.

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1717.  Lady M. W. Montagu, Lett. to Abbé Conti, 1 April. I know you Condemn the quackery … as much as you revere the … truths, in which we both agree.

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1798.  Trans. Soc. Arts, XVI. 190. All the nostrums offered … are mere quackery.

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1840.  Carlyle, Heroes (1858), 187. Quackery and dupery do abound; in religions … they have fearfully abounded.

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1874.  Mahaffy, Soc. Life Greece, ix. 273. The old quackery of charms and incantations.

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1885.  Contemp. Rev., June, 908. Theosophy [is] … one of the least … interesting and least intellectual of spiritual quackeries.

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