ĭn-exhaustus, a, um, adj.,
unexhausted (poet. and post-Aug.): metalla, Verg. A. 10, 174: urbes, not plundered , Sil. 14, 686: pubertas, not enfeebled , Tac. G. 20; id. H. 5, 7 (but not in Cic. Fin. 3, 2, 7; v. Madv. ad h. l.).
in-exhaustus adj., not wasted: pubertas, not enfeebled, Ta.: metalla, inexhaustible, V. ...
An Elementary Latin Dictionary