indefatigable

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English[edit]

Etymology[edit]

From Middle French, from Latin indēfatīgābilis (untiring), from in- (not) + dēfatīgō (to tire out).

Pronunciation[edit]

  • (Received Pronunciation) IPA(key): /ˌɪn.dɪˈfæ.tɪ.ɡə.bəl/
  • (General American) IPA(key): /ˌɪn.dəˈfæ.tɪ.ɡə.bəl/, [ˌɪn.dəˈfæ.ɾɪ.ɡə.bəl]
  • (file)
  • (sometimes proscribed) IPA(key): /ˌɪn.dɪ.fəˈti.ɡə.bəl/, /ˌɪn.də-/
  • (file)
  • Hyphenation: in‧de‧fa‧tig‧a‧ble

Adjective[edit]

indefatigable (comparative more indefatigable, superlative most indefatigable)

  1. Extremely persistent and untiring.
    Synonyms: inexhaustible, relentless, tireless, unflagging, unsinkable, untiring, unwearying
    Antonym: (much less common) defatigable

Derived terms[edit]

Translations[edit]