pro et conadv.

1566 J. Rastell Third Bk. beware of M. Iewel f. 55^v After great arguments made Pro et Con, within himself.

1578 T. Blenerhasset 2nd Pt. Mirrour for Magistrates Sigebert f. 47 Maroes shepherds..dyd often times disclose very intricate mysteries, reasoning pro et con of many high poynts belonging vnto the common weale.

1630 T. Taylor Progresse of Saints 130 A teacher..who is..prepared to dispute pro et con of the least apex or iota in Divinity.

1639 T. Heywood True Rel. 2 Most Famous Eng. Pyrats sig. B 7^v These things were Pro et con long debated.

1790 New Geogr., Commerc., & Hist. Gram. I. 345 If a bill, originally begun in the House of Commons, happens, upon the first reading, to be debated pro et con, and that upon the debate, the house calls for the question.

1868 Proc. & Deb. Constit. Convent. State N.Y. 3 2316 I have listened to the arguments advanced pro et con.

1909 Virginia Law Reg. 14 701 Other witnesses were also examined ‘pro et con.’ giving with more or less circumstantiality their recollections of casual conversations had with the parties.

1963 A. A. Luce Dialectic Immaterialism iv. 68 Often one cannot tell whether Bayle is giving his own views, or arguing upon the principles of others, or, indeed, arguing irresponsibly pro et con for the fun of arguing.

1998 K. F. Johansen Hist. Anc. Philos. ixx. 283 The process itself—the search for clarification by means of conceptual analysis and argumentation pro et con—may be called dialectical.