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]

Adjective[edit]

indefatigable (comparative more indefatigable, superlative most indefatigable)

  1. Extremely persistent and untiring.

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