'Indefatigability' definitions:
Definition of 'indefatigability'
From: WordNet
noun
Tireless determination [syn: indefatigability, indefatigableness, tirelessness]
Definition of 'Indefatigability'
From: GCIDE
- Indefatigability \In`de*fat`i*ga*bil"i*ty\ ([i^]n`d[-e]*f[a^]t`[i^]*g[.a]*b[i^]l"[i^]*t[y^]), n. The state of being indefatigable. [1913 Webster]