indefatigation

English

Noun

indefatigation (uncountable)

1. (obsolete) The quality of being indefatigable; tirelessness.
   • 1663, John Gregory, The Description and Use of the Terrestrial Globe:

     The Arabian Geographers […] holding themselves not to be inferior (as indeed they were not) either to the Indefatigation or Skill of the Greek Geographers, they hoped to have the beginning of Longitude taken from them

References

“indefatigation”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.