αἰχμητής
From LSJ
ἑὰν δὲ προσποιούμενος ᾗ τὰ μαθήματά πως ἀπείρως προβάλλων, οὐκ ἔστιν αἰτίας ἔξω → But should one profess knowledge as he puts forward something in an inexperienced way, he is not without blame (Pappus 3.1.30.31f.)
English (LSJ)
οῦ, Dor. αἰχμ-ᾱτάς, ᾶ, ὁ, (αἰχμή) poet.,
A spearman, warrior, esp. opp. to archers, Il.2.543, Od.2.19, al., Archil. 119, cj.in Alcm.68,etc. II In Pi.as Adj., 1 pointed (or spear-wielding), αἰ. κεραυνός P.1.5. 2 warlike, αἰ. θυμός N.9.37:—fem. αἴχμητις (sic), EM595.39.