Lewis Short
immātūrĭtas | inm- (noun F) : (), , immaturus.
* Unripeness, immatureness: sponsarum,Suet. Aug. 34.—*
* Untimely haste, over-eagerness: quid haec festinatio, quid haec immaturitas tanta significat?Cic. Quint. 26, 82.
Charlton T. Lewis, Charles Short, A Latin Dictionary