untirable

== English == === Etymology === From un- +‎ tirable. === Adjective === untirable (not comparable) Incapable of being tired; never tiring. 1965, Thom Gunn, “Misanthropos” IX (retitled as “Memoirs of the World” in Poems 1950-1966: A Selection, London: Faber & Faber, 1969, p. 41,[2] […] I laboured to become a god of charm, an untirable giver. ==== Synonyms ==== tireless === Anagrams === Butlerian, untriable