inexhausted

from The Collaborative International Dictionary of English v.0.48

Inexhausted \In`ex*haust"ed\, a. [Pref. in- not + exhausted: cf.
   F. inexhaustus.]
   Not exhausted; not emptied; not spent; not having lost all
   strength or resources; unexhausted. --Dryden.
   [1913 Webster]