ἴφιος
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
English (LSJ)
[ῑφ], α, ον, Ep.Adj., freq. in Hom., but only in phrase ἴ. μῆλα
A fat, goodly sheep, Il.5.556,al., cf. D.P.753, etc.
German (Pape)
[Seite 1275] (ἶφι), stark, kräftig; bei Hom. ἴφια μῆλα, die starken, wohlgenährten Schaafe; wunderlich Hesych. ἀπὸ τοῦ ἰέναι σφοδρῶς ἢ σκιρτᾶν, E. M. ἰσχυροποιὰ τῶν ἐσθιόντων, Suid. ἰσχυρῶς βαδίζοντα.