Lewis Short
(verb) : imprŏpĕro (inpr-), āre, in-propero
* To hasten into, enter hastily: quo si quis improperet, Varr. ap. Plin. 36, 13, 19, § 91.
Charlton T. Lewis, Charles Short, A Latin Dictionary
Lewis Short
(verb) : imprŏpĕro (inpr-), āvi, ātum, 1, and
* A. [corrupt. for improbro; from in - probrum], to cast as a reproach upon one, to reproach, taunt, upbraid (post-Aug., and very rare): impropero ὀνειδιζω, Gloss. Philox.: non impropero illi,Petr. 38: improperia improperantium,Vulg. Rom. 15, 3: latrones improperabant ei,id. Matt. 27, 44.
Charlton T. Lewis, Charles Short, A Latin Dictionary