ἀρηΐθοος

Adjective

 * 1) warlike, literally swift in the fight
 * ὀκτὼ δὴ προέηκα τανυγλώχινας ὀϊστούς, πάντες δ’ ἐν χροῒ πῆχθεν ἀρηϊθόων αἰζηῶν· τοῦτον δ’ οὐ δύναμαι βαλέειν κύνα λυσσητῆρα(Iliad 8.297) Already have I discharged eight long-bearded arrows, and they have all been fixed in the bodies of warlike youths; but I cannot strike this raging dog. (Buckley)

The word occurs in Homer only in the genitive plural, in set phrases based on χροῒ πῆχθεν ἀρηϊθόων αἰζηῶν, fixed in vigorous and warlike bodies (used to describe arrows). There is also a proper name Areithous.