εἴητε

From LSJ

ἀναπλασμὸς ἐκ ματαίων ἐλπίδων → building of castles in the air

Source

French (Bailly abrégé)

2ᵉ pl. opt. de εἰμί.

Russian (Dvoretsky)

εἴητε: = εἶτε.