Lewis Short
(adj.adv.) : interjectīvus, a, um, adj.interjacio
* Placed between (post-class.): rigor, Simplic. de Re Agrar. p. 78.—Hence, in-terjectīvē, adv., in the manner of an interjection, Prisc. 15 fin.
Charlton T. Lewis, Charles Short, A Latin Dictionary