καρτερόθυμος

ον
A. stronghearted, of heroes, Od. 21.25, Il. 13.350; Μυσοί 14.512; [Ζεύς], Ἔρις, Hes. Th. 476, 225: generally, strong, mighty, ἄνεμοι ib.378.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project