Wiktionary
unexhausted
a. Not exhausted.
WordNet
unexhausted
adj. not used up completely; "an unexhausted well" [ant: exhausted]
Usage examples of "unexhausted".
Highest of the effects your unexhausted air had had on Shouter, the spoolseller, how he had been riddled as if by unseen radiations.
The transient presumption of Sapor had vanished: he observed, with serious concern, that, in the repetition of doubtful combats, he had lost his most faithful and intrepid nobles, his bravest troops, and the greatest part of his train of elephants: and the experienced monarch feared to provoke the resistance of despair, the vicissitudes of fortune, and the unexhausted powers of the Roman empire.