I.unclean, filthy, foul (cf.: obscenus, spurcus, immundus).
II. Trop., unclean (in a moral sense), impure, defiled, filthy, infamous, abandoned, vile.
A. Of living beings: “impudens, impurus, inverecundissimus,” Plaut. Rud. 3, 2, 38: “in his gregibus omnes aleatores, omnes adulteri, omnes impuri impudicique versantur,” Cic. Cat. 2, 10, 23: “persona illa lutulenta, impura, invisa,” id. Rosc. Com. 7, 20: “o hominem impurum!” Ter. Ad. 2, 1, 29: impuri cujusdam et ambitiosi sententia, Cic. Lael. 16, 59: “cum impuris atque immanibus adversariis decertare,” id. Rep. 1, 5: “(dux) audax, impurus,” id. ib. 1, 44: “impurus et sceleratus,” id. Att. 9, 15 fin.: “erat hic Corinthia anus haud impura,” tolerably decent, Ter. Heaut. 4, 1, 16: “homo haud impurus,” id. Eun. 2, 2, 4: “libidine omni,” Petr. 81.—Comp.: “quis illo qui maledicit impurior?” Cic. Phil. 3, 6, 15.— Sup.: omnium non bipedum solum, sed etiam quadrupedum impurissimus, Auct. Or. pro Dom. 18, 48.—
B. Of inanim. and abstr. things: “lingua,” Sen. Ep. 87 med.: “animus,” Sall. C. 15, 4: “mores,” Cat. 108, 2: “adulterium,” id. 66, 84: “historia,” Ov. Tr. 2, 416: “medicamina, i. e. venena,” Flor. 2, 20: “quid impurius, quam retinuisse talem (adulteram),” Quint. 9, 2, 80. —Hence, adv.: impūrē (acc. to II.), impurely, basely, shamefully, vilely: “impure atque flagitiose vivere,” Cic. Fin. 3, 11, 38: “multa facere impure atque taetre,” id. Div. 1, 29, 6: “atque intemperanter facere,” id. Phil. 2, 21, 50: “a quo impurissime haec nostra fortuna despecta est,” id. Att. 9, 12, 2.