a., adv., and v. [f. TWENTY + -FOLD. Cf. OE. twentiʓfeald.]

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  A.  adj. Twenty times as many or as great; multiplied by twenty; twenty times repeated.

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1610.  Holland, Camden’s Brit. (1637), 679. Rye with twenty fold encrease.

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1653.  T. C., in Blithe, Eng. Improv. Impr., To Capt. W. B., C vj. To raise from one to ten, yea Twentyfold.

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1855.  Milman, Lat. Chr., XIV. iii. (1864), IX. 160. The interminable process of twentyfold assertion, twentyfold objection, twentyfold conclusion.

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1897.  P. Warung, Tales Old Regime, 207. Even in the twenty-fold perjurer and the thrice condemned murderer.

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  B.  adv. Twenty times (in amount); twenty times as much.

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1872.  Tennyson, Gareth & Lynette, 970. The savour of thy kitchen came upon me A little faintlier: but the wind bath changed: I scent it twentyfold.

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1905.  Standard, 3 March, 2/5. After … heavy rains,… the volume of water … was twentyfold as great.

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  † C.  vb. To multiply by twenty. Obs. rare–0.

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1611.  Florio, Ventiplicare, to twentyfold.

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