Lewis Short
(adjective) : in-spērans, ntis, (usually in the oblique cases)
* Not hoping, not expecting, contrary to one's hopes or expectations (class.): insperanti mihi, sed valde optanti cecidit, ut,Cic. de Or. 1, 21, 96: quibus tu salutem insperantibus reddidisti,id. Marc. 7, 21: insperante hoc atque invito Pamphilo,Ter. And. 3, 4, 24; Cat. 107, 5.—In nom.: aetas, Inscr. ap. Grut. 1133, 15.
Charlton T. Lewis, Charles Short, A Latin Dictionary