From Wiktionary, the free dictionary
From in- + exhausted.
inexhausted (not comparable)
- Not exhausted.
1685, John Dryden, To the Memory of King Charles II:That all-forgiving king, / The type of Him above, / That inexhausted spring / Of clemency and love
1828, Thomas Gent, Poems (1828)[1]:The forms of polity, the springs of power, / Exploring still with inexhausted zeal
