indefatigableness
nounEtymology From indefatigable + -ness.
1
The state of being indefatigable.
- . . . but too much security on the republican part will give time to his talents and indefatigableness to extricate them.1829, Memoir, Correspondence, and Miscellanies: from the papers of Thomas Jefferson:
- Synonyms
- indefatigability, persistence, stamina, tirelessness