Lewis & Short

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.).