ἴσμεν

From LSJ

αὐτόματοι δ' ἀγαθοὶ ἀγαθῶν ἐπὶ δαῖτας ἴασιautomatically do the noble go to the feasts of the noble

Source

French (Bailly abrégé)

1ᵉ pl. de οἶδα, v. *εἴδω.

Russian (Dvoretsky)

ἴσμεν: 1 л. pl. praes. к *εἴδω.