infatigable

From Middle French infatigable, from Latin infatigabilis.

infatigable (comparative more infatigable, superlative most infatigable)

1. (obsolete) indefatigable
   • 1595, Samuel Daniel, “(please specify the folio number)”, in The First Fowre Bookes of the Ciuile Wars between the Two Houses of Lancaster and Yorke, London: […] P[eter] Short for Simon Waterson, OCLC 28470143:

     Th'infatigable hand that neuer ceast

infatigable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913

infatigable (masculine and feminine plural infatigables)

1. indefatigable, tireless

• incansable

Borrowed from Latin infatīgābilis; morphologically, from in- +‎ fatiguer +‎ -able.

• IPA^(key): /ɛ̃.fa.ti.ɡabl/

infatigable (plural infatigables)

1. indefatigable, tireless

• infatigablement

• “infatigable”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

From Latin infatigabilis.

infatigable (plural infatigables)

1. indefatigable, tireless, untiring, unflagging

   Synonym: incansable

• infatigablemente

• fatiga

• “infatigable”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014