τλήθυμος

ον
A. of enduring soul, stout-hearted, Ὀδυσσεύς AP 9.472; τ. κύων a staunch hound, Pi. Fr. 234; ἀλκὰ παγκρατίου τ. Id. N. 2.15.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project