Lewis Short
(adj.adv.) : prae-prŏpĕrus, a, um, adj.
* Too quick or hasty, over-hasty, sudden, precipitate (class.): praepropera festinatio,Cic. Fam. 7, 8, 1: prensatio,id. Att. 1, 1, 1: celeritas,Liv. 31, 42: ingenium,rash,id. 22, 41: nisus,Sil. 15, 757: amor,Val. Max. 6, 3, 6.— Hence, adv.: praeprŏpĕrē, very quickly, very hastily, with over-haste (rare; not in Cic. or Caes.): peri praepropere,Plaut. Mil. 2, 4, 10 (v. Ritschl ad h. l.): festinans praepropere,Liv. 37, 23, 10: raptim omnia praepropere agendo,id. 22, 19, 10; Quint. 12, 6, 2; Suet. Oth. 8.
Charlton T. Lewis, Charles Short, A Latin Dictionary