Where does “indefatigable” come from?

Indefatigable comes from Latin indefatigabilis, composed of the prefix in- (not) and defatigabilis (able to be tired), ultimately from Proto-Indo-European ne (not) and h₁én (to be).

indefatigable (English): Extremely persistent and untiring

Definitions

  1. Extremely persistent and untiring

Ancestry of “indefatigable”, step by step

StepLanguageWordMeaning
1Latinindēfatīgābilis

Words derived from “indefatigable

Every word from Latin indēfatīgābilis
indefatigable — Etymology, Origin & Word History | Etymology Explorer