Indefatigable and Spent

Indefatigable

Indefatigable adjective - Showing no signs of weariness even after long hard effort.
Usage example: an indefatigable laborer who can work from sunrise to sunset

Spent is an antonym for indefatigable.

Spent

Spent adjective - Depleted in strength, energy, or freshness.

Indefatigable is an antonym for spent.

Nearby Word: spend
Cite this Source
Spent and Indefatigable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/indefatigable/spent
Indefatigable & Spent. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/indefatigable/spent>.
Spent or Indefatigable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/indefatigable/spent.
Google Ngram Viewer shows how "indefatigable" and "spent" have occurred on timeline