English → Latin
“indefatigable” in Latin
assiduusconstant, regular, perpetual; unremitting, incessantimpigeractive, energetic, diligentimpigritāsactivity, indefatigableness
The English word indefatigable itself goes back to Latin indēfătīgābĭlis.
Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864
indefatigable
assiduus (active without ceasing): impiger (not fearing or minding any trouble). Indefatigable industry, assidnitas: impigritas (Cic., Non., p. 125, 20).
Quick answer
- What is the Latin word for indefatigable?
- The usual Latin words for “indefatigable” are assiduus, impiger, impigritās. The right choice depends on the sense; see the distinctions below.
Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.