ἴθι
From LSJ
ἀνιαρῶς τε φέρει τὴν τελευτὴν, καίτοι γε τὸν πρόσθεν χρόνον διαχλευάζων τοὺς μορμολυττομένους τὸν θάνατον, καὶ πρᾴως ἐπιτωθάζων → he bears death with grief, although in a former time he criticized, and mildly derided, those that were fearing death
English (LSJ)
imperat. of εἶμι (
A ibo), come, go (q.v.): used as Adv. of encouragement, come! well then! Il.4.362; ἴ. νυν Ar.Ra.519, etc.