Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praepostĕro, āvi, 1, v. a. [praeposterus], to reverse, invert (post-class.): ordinem, Auct. Quint. Decl. 9: versus, August. Mus. 3, 9, 20.
prae-postĕrus, a, um, adj., reversed, inverted, perverted, distorted, absurd, preposterous, unseasonable, etc. (class.; syn.: intempestivus, perversus).
- I. Of persons, absurd, preposterous: ut erat semper praeposterus atque perversus, Cic. Clu. 26, 71: imperator, id. Pis. 38, 92: homines, Sall. J. 85, 12.
- II. Of things concr. and abstract: praeposteri ficus, figs out of season, too late, Plin. 16, 27, 51, § 117: natalis, an inverted birth, i. e. with the feet foremost, id. 7, 8, 6, § 46: praeposteri aut praeproperi rigores, id. 18, 25, 57, § 208: dies, id. 17, 24, 37, § 216: frigus, Sen. Ep. 23, 1: quid tam perversum praeposterumve dici, aut excogitari potest? Cic. Rab. Post. 13, 37: ut ne quid perturbatum ac discrepans, aut praeposterum sit, id. de Or. 3, 11, 40: tempora, id. ib. 3, 13, 49: gratulatio, id. Sull. 32, 91: consilia, id. Lael. 22, 85: ordo, Lucr. 3, 621: praepostera et intempestiva oratio, Plin. Ep. 6, 5, 3.
Hence, adv.: praepostĕrē, in a reversed order, irregularly (class.): litteras reddere, Cic. Att. 7, 16, 1: agere cum aliquo, id. Ac. 2, 20, 67: laevus calceus praepostere inductus, the left inslead of the right, Plin. 2, 7, 5, § 24: dicere aliquid, Plin. Ep. 3, 9, 28: syllogismo uti, Gell. 2, 8, 1; and praepostero, Sen. Ep. 3, 2.