σύμμηρος
From LSJ
καὶ παρὰ δύναμιν τολμηταὶ καὶ παρὰ γνώμην κινδυνευταὶ καὶ ἐν τοῖς δεινοῖς εὐέλπιδες → they are bold beyond their strength, venturesome beyond their better judgment, and sanguine in the face of dangers
English (LSJ)
ον,
A with the thighs closed, μηροὶ σ. Hp.Art.77, Hippiatr. 14; = compernis, Gloss.