ē-jūro (mostly post-Aug., Cic. Fam., v. infra, and ējĕro, like pejero, class., Scip. ap. Cic. de Or. 2, 70, 285 twice; Cic. Phil. 12, 7, 18; id. Verr. 2, 3, 60, § 137; Tert. Spect. 24; id. Idol. 18), āvi, ātum, 1, v. a., to refuse or reject by oath, to abjure, a t. t. of jurid., polit., and mercant. lang.
I In jurid. lang.: forum or judicem iniquum sibi, to reject , refuse on oath a court or a judge, as unjust, Scip. l. l.; Cic. Verr. l. l.; id. Phil. 12, 7, 18 Manut. and Wernsd.—
II In polit. law lang.: magistratum, imperium, etc., to lay down , resign , abdicate an office, at the same time swearing to have administered it according to law: jurando abdicare , Tac. H. 3, 37; 68; 4, 39; id. A. 12, 4; Plin. Ep. 1, 23, 3; and absol. , Tac. A. 13, 14.—
2 Transf. beyond the polit. sphere (like abdicare), to abandon , forswear , disown any thing: militiam, to swear one's self unfit for service , cf. III. infra; Plaut. Fragm. ap. Paul. ex Fest. p. 77, 17 Müll.: patriam, Tac. H. 4, 28; cf.: patriae nomen, Just. 12, 4, 1; Asin. Pollio ap. Sen. Suas. 7: liberos, Sen. Cons. ad Marc. 19; cf. patrem (with aversari), id. Ben. 6, 4.—Poet.: fidem domitoremque inimicum (leo), Stat. Ach. 2, 188.—
III In mercant. lang.: bonam copiam (as the opp. of jurare bonam copiam), to declare on oath that one has not wherewithal to pay his debts , to swear that one is insolvent , Cic. Fam. 9, 16, 7 Manut.