Obs. rare. [ad. (prob. through Fr.) L. adversātiōn-em, n. of action, f. adversā-ri: see ADVERSANT.] Opposition, hostility.
1470. Harding, Chron., lxvii. Hym and his men to kepe frome [all] aduersacyon, of Scottes & Peyghtes. Ibid., lxxxviii. Eche kyng warred on others lande … And Britons also did great aduersation.
