Lewis & Short

adversor (archaic advor-), ātus, 1, v. dep. [adversus]: alicui, to stand opposite to one, to be against, i. e. to resist or oppose (in his opinions, feelings, intentions, etc.; while resistere and obsistere denote resistance through external action, Doed. Syn. 4, 303; cf. adversarius; class.; freq. in Cic.); constr. with dat. or absol.: idem ego arbitror nee tibi advorsari certum est de istac re usquam, soror, Plaut. Aul. 2, 1, 21: meis praeceptis, id. As. 3, 1, 5; so id. Trin. 2, 1, 108: mihi, Ter. Hec. 4, 4, 32; 2, 2, 3: hujus libidini, Cic. Verr. 2, 5, 31, § 81: ornamentis tuis, id. Sull. 18, 50: Isocrati, id. Or. 51, 172: commodis, Tac. A. 1, 27: adversantes imperio Domini, Vulg. Deut. 1, 43: invitā Minervā, id est, adversante et repugnante natura, Cic. Off. 1, 31: non adversatur jus, quo minus, etc., id. Fin. 3, 20: adversante vento, Tac. H. 3, 42: adversantibus amicis, id. Ann. 13, 12: adversans factio, Suet. Caes. 11: adversantibus diis, Curt. 6, 10: non adversata petenti Annuit, Verg. A. 4, 127; Vulg. 2 Thess. 2, 4 al.
Note:

      1. a. In Tac. constr. also adversari aliquem, H. 1, 1; 1, 38.
      2. b. In Plaut. pleonastic, adversari contra, Cas. 2, 3, 35, and adversari adversus aliquid, Mer. 2, 3, 43.