(a.) Incapable of being fatigued; not readily exhausted; unremitting in labor or effort; untiring; unwearying; not yielding to fatigue; as, indefatigable exertions, perseverance, application.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). indefatigable. Retrieved September 20, 2026, from http://smartdefine.org/indefatigable/definitions/2020705 |
| Chicago | Webster's. 2011. "indefatigable" http://smartdefine.org/indefatigable/definitions/2020705 (accessed September 20, 2026). |
| Harvard | Webster's 2011, indefatigable, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/indefatigable/definitions/2020705>. |
| MLA | Webster's. "indefatigable" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/indefatigable/definitions/2020705> |