Lewis Short
(adjective) : incomprĕhensĭbĭlis, e, 2. incomprehendo
* That cannot be seized or held, that cannot be grasped (post-Aug.).
* Lit.: parvitas arenae,Col. 10 praef. § 4: alces incomprehensibili fuga pollet,that cannot be overtaken,Sol. 20.— Neutr. as subst.: constare ex comprehensibili et incomprehensibili,Tert. Ap. 48.
* Trop.
* (The fig. is of a wrestler.) In disputando incomprehensibilis et lubricus, Plin. Ep. 1, 20, 6 Döring.
* Of the mind, incomprehensible, inconceivable: vitiosae consuetudinis immensum et incomprehensibile arbitrium est,i. e. illimitable, endless,Sen. Cons. ad Helv. 11, 1; cf., opus,id. Ep. 94, 14: cum igitur illa incerta (natura) incomprehensibilisque sit, incomprehensible, Cels. praef. med.: praecepta,Quint. 9, 1, 12.—Adv.: in-comprĕhensĭbĭlĭter, incomprehensibly, Hier. Ep. 87; Ambros. in Luc. 2, 1: natus filius, Hilar. Trin. 3, 17; Lact. 3, 2, 6.
Charlton T. Lewis, Charles Short, A Latin Dictionary