indefatigable

Definition from Wiktionary, a free dictionary

Contents 1 English 1.1 Etymology 1.2 Pronunciation 1.3 Adjective 1.3.1 Synonyms 1.3.2 Antonyms 1.3.3 Derived terms 1.3.4 Translations

[edit] English

[edit] Etymology

From Latin indēfatīgābilis (“‘untiring’”), from in- (“‘not’”) + de- (“‘away’”) + fatīgō (“‘I tire’”).

[edit] Pronunciation

• (UK) IPA: /ˌɪn.dɪˈfæ.tɪ.gə.bl/
• (US) IPA: /ɪndɨˈfæɾɨgəbəl̴/

[edit] Adjective

indefatigable (comparative more indefatigable, superlative most indefatigable)

1. Extremely persistent and untiring.
   • 1749, Henry Fielding, The History of Tom Jones, a Foundling, Book XVIII, chapter 4

     […] but he was at the same time an excellent scholar, and most indefatigable in teaching the two lads.

   • 1898, H. G. Wells, The War of the Worlds, Book 1, ch. 8:

     All night long the Martians were hammering and stirring, sleepless, indefatigable, at work upon the machines they were making ready, and ever and again a puff of greenish-white smoke whirled up to the starlit sky.

[edit] Synonyms

• inexhaustible, tireless, untiring

[edit] Antonyms

• defatigable (much less common)

[edit] Derived terms

• indefatigably
• indefatigability
• indefatigableness

[edit] Translations