ἄφιππος
From LSJ
συνετῶν μὲν ἀνδρῶν, πρὶν γενέσθαι τὰ δυσχερῆ, προνοῆσαι ὅπως μὴ γένηται· ἀνδρείων δέ, γενόμενα εὖ θέσθαι → it is the part of prudent men, before difficulties arise, to provide against their arising; and of courageous men to deal with them when they have arisen
English (LSJ)
ον,
A unsuited for cavalry, Καρία X.HG3.4.12, cf. Plu.Ant. 47. II of persons, unused to riding, opp. ἱππικός, Aeschin.Socr. Oxy.1608 Fr.1.15; ignorant of horsemanship, Pl.Prt.350a, R.335c, Luc.Nav.30. 2 without cavalry, Polyaen.4.6.6.
German (Pape)
[Seite 412] 1) für Reiterei untauglich, Καρία Xen. Hell. 3, 4, 12 Ages. 1, 15; Plut. oft. – 2) ungeschickt im Reiten, Ggstz ἱππικοί Plat. Prot. 350 a; Rep. I, 335 c, Schol. ἀπείρως ἔχοντες ἱππικῆς; Luc. navig. 30.