Lewis Short
(adverb) : immortālĭtus (inm-), immortalis, analog. with divinitus
* From heaven, by the gift of the gods: immortalitus se obtulit mihi haec facultas, Turp. ap. Non. 514, 28 (Com. Fragm. v. 89 Rib.).
Charlton T. Lewis, Charles Short, A Latin Dictionary