ἑταιρίδιον
From LSJ
οἵ γε καὶ ἐν τῷ παρόντι ἀντιπάλως μᾶλλον ἢ ὑποδεεστέρως τῷ ναυτικῷ ἀνθώρμουν → whose navy, even as it was, faced the Athenian more as an equal than as an inferior
English (LSJ)
Dim. of ἑταίρα, Ph. ap. Eus.PE8.14(pl.), Plu.2.808e, Hld.7.10.
German (Pape)
[Seite 1047] τό, dim. zu ἑταίρα, Plut. reip. ger. pr. 13 u. a. Sp.