An abbreviation of the L. prep. contra ‘against,’ in the phrase PRO AND CON (q.v.) ‘for and against,’ rarely con and pro.

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  A.  as adv.

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c. 1470.  [see CONTRA].

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1572.  R. H., trans. Lavaterus’ Ghostes, To Rur. (1596), A ij. The matter throughly handled Pro and Con.

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1667.  Denham, Direct. to Painter, I. xix. May Historians argue con and pro.

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1819.  Byron, Lett. to Murray, 25 Jan. The rest … has never yet affected any human production ‘pro or con.’

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  B.  sb. The adv. used as a name for itself; hence, a reason, argument, or arguer against, esp. in pros and cons.

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1589.  R. Harvey, Pl. Perc., 20. Such a quoile about pro and con, such vrging of Ergoes.

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a. 1625.  Fletcher, Nice Valour, III. ii. Now for the Con.

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1654.  R. Whitlock, Ζωοτομια, 231. Whole Tomes of Pro’s and Con’s.

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1872.  Minto, Eng. Lit., II. ix. 572. He then proceeds to state the pros and cons.

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