a. (UN-1 7.)

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1744.  Birch, Life Boyle, 32. If he were given to any vice himself, he was careful … to render it uninfectious.

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1805.  Gentl. Mag., June, 526/2. It [the publick] has … laid the foundation for the final extermination of the Small-pox, by universally disseminating the mild, uninfectious, and certain preservative [vaccination] against this cruel disorder.

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1884.  Mrs. Hoey, The Lover’s Creed, I. vii. 161. by Mrs. Cashel Hoey The romance of military life as Maxwell depicted it, its pomp and dash as Lever drew them, had given him pleasure of an intense kind, but pleasure as abstract and as uninfectious as that with which he read the ‘Arabian Nights,’ or narratives of Arctic exploration.

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1924.  A. Woollcott, Enchanted Aisles, 190–1. In the theaters along Broadway, piece after piece reminds us all that this business of acting in a vacuum is singularly uninfectious and that the most expressive and most imaginative of players cannot make good out of their own resources a basic lack of validity in the scene committed to them.

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