inexhaustible
UK: ˌɪnɪɡˈzɔːstəbl | US: ˌɪnɪɡˈzɔːstəbl
adj. incapable of being used up or depleted
adj. tireless; showing no signs of fatigue
inexhaustible = in<not> + exhaust<deplete> + ible<capable of>
- in: Prefix meaning "not," from Latin in- (negation).
- exhaust: Root from Latin exhaurire ("to drain out"), combining ex- ("out") + haurire ("to draw, drain").
- ible: Suffix meaning "capable of," from Latin -ibilis.
Etymology Origin:
The word traces back to Latin exhaurire, which originally described draining liquids (e.g., emptying a well). Over time, "exhaust" broadened to mean depleting any resource. Adding in- negates this, creating "inexhaustible"—literally "not capable of being drained out." The suffix -ible reinforces the potential nature (e.g., "capable of being endless"). This logical construction reflects how Latin roots were repurposed in English to describe abstract resilience.
Solar energy is an inexhaustible resource.
Her enthusiasm for learning seems inexhaustible.
The author’s imagination proved inexhaustible.
The desert’s vastness felt inexhaustible.
Children’s energy is nearly inexhaustible.