unexhaustible
Never running out
Unexhaustible means the same as inexhaustible—impossible to use up or wear out: an unexhaustible supply of energy, her unexhaustible patience.
The prefix *in-* is standard; *un-* is a less common variant that some consider nonstandard, though both forms have appeared in English for centuries.
Without termination or boundary
- ceaselessWithout interruption or end
- eternalLasting without end
- everlastingLasting for all time
- unendingLacking any terminus
interminable · perpetual · continuous · unceasing · tireless · indefatigable · unflagging · unwearying
Existing in abundance
- copiousExisting in abundance
- bountifulPlentiful and generous
- ampleFully sufficient, even excessive
- profuseExtremely abundant, overflowing
teeming · overflowing · abounding · limitless · boundless · fecund · fruitful · productive
Able to endure long-term
- regenerativeAble to renew itself
- replenishingRestoring to fullness
- restorativePromoting return to health
- resilientAble to recover quickly
recurring · cyclical · perennial · evergreen · recoverable · rebounding
endless
Without termination or boundary
- ceaselessWithout interruption or end
- eternalLasting without end
- everlastingLasting for all time
unending · interminable · perpetual · continuous · unceasing · tireless · indefatigable · unflagging · unwearying · relentless
plentiful
Existing in abundance
profuse · teeming · overflowing · abounding · limitless · boundless · fecund · fruitful · productive · rich
sustainable
Able to endure long-term
- regenerativeAble to renew itself
- replenishingRestoring to fullness
- restorativePromoting return to health
resilient · recurring · cyclical · perennial · evergreen · recoverable · rebounding
unexhaustibleexhaustible
Able to be used up
finite · limited · depletable · expendable · consumable
exhaust, exhaustible, inexhaustible, exhausted, exhausting, exhaustion, exhaustive, exhaustively, inexhaustibly