v. [ad. late L. apostatīzā-re for earlier apostatāre, f. apostata: see -IZE.]

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  1.  To abandon or renounce one’s religious faith or moral allegiance; to become an apostate.

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1611.  Cotgr., Apostasier, to play th’ Apostata, to Apostatize it.

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1634–46.  Row, Hist. Kirk (1842), 373. Who will not perjure themselves by apostatizing with perjured prelatts.

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1754.  Edwards, Freed. Will, II. xi. (ed. 4), 162. A very great part of the angels apostatised.

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1849.  Macaulay, Hist. Eng., II. 14. If ever he [Kirke] did apostatize, he was bound by a solemn promise … to turn Mussulman.

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  b.  Const. from the original faith, to the new.

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1552.  Latimer, Serm. & Rem. (1845), 313. Many princes and supreme pontiffs … have been found to apostatise from the faith.

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1676.  I. Mather, Philip’s War (1862), 108. A wretched English man that apostatized to the Heathen.

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1839.  De Quincey, in Blackw. Mag., XLVI. 817/2. All China apostatized to the new faith.

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  2.  gen. To abandon a principle, desert a party.

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1648.  Cromwell, Lett., liii. (Carl.). He apostatised from your cause and quarrel.

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1722.  Wollaston, Relig. Nat., ix. 177. To cast off reason … apostatize from humanity, and recoil into the bestial life.

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1851.  Dixon, W. Penn, xi. (1872), 89. Some of the courtiers were apostatising.

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  † 3.  Med. To become resolved into a purulent discharge. (Cf. medical Gr. ἀπόστασις suppurative inflammation.) Obs. rare.

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1651.  Biggs, New Dispens., ¶ 236. Whatsoever has once apostatized into … corruption in the body.

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