Meanings
comparative more indefatigably · superlative most indefatigably
- In an extremely persistent and untiring manner; in an indefatigable manner
Silence, silence,’ the trumpet mouths indefatigably repeated at intervals down every corridor.
1932, Aldous Huxley, Brave New World, London: Chatto & Windus
Synonyms & antonyms
adverbwith indefatigable energy
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From indefatigable + -ly, but indefatigable itself was attested later. In use since the 16th century.
Full word history & related roots →Translations
Czech neúnavně
- neúnavněin an extremely persistent and untiring manner
Norwegian utrettelig
- utretteligin an extremely persistent and untiring manner
Cite this entry
indefatigably. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/indefatigably
“indefatigably.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/indefatigably. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “indefatigably,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/indefatigably.
Source: indefatigably on Wiktionary, CC BY-SA 4.0.