Meanings
adjectivedefatigable (comparative more defatigable, superlative most defatigable)
comparative more defatigable · superlative most defatigable
- rareEasily tired or wearied; capable of being fatigued.
The author wishes to acknowledge the help of his peerful editor, Fredrica Friedman, and his defatigable researcher, Susan Hall, as well as that of his severest critic, P. Bear.
2001, Cleveland Amory, The Cat Who Came for Christmas
Origin
- Proto-Indo-European*de
- Proto-Indo-European*déh₁
- Proto-Italic*dē
- Latindē
- Latindē-
- Latinfatīgō
- Latindēfatīgō
- Latindēfatīgātus
- Englishdefatigable
From Latin defatigatus, past participle of defatigare (“to tire or weary”).
More words from Latin
Full word history & related roots →Cite this entry
APA
defatigable. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/defatigable
MLA
“defatigable.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/defatigable. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “defatigable,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/defatigable.
Source: defatigable on Wiktionary, CC BY-SA 4.0.