εἴην
From LSJ
πωγωνοτροφία φιλόσοφoν οὐ ποιεῖ → a long beard does not make the philosopher
Greek (Liddell-Scott)
εἴην: εὐκτ. ἀορ. β΄ τοῦ ἵημι· ἀλλ’ εἴην εὐκτ. ἐνεστ. τοῦ εἰμὶ (ὑπάρχω).
French (Bailly abrégé)
opt. de εἰμί.
English (Strong)
optative (i.e. English subjunctive) present of εἰμί (including the other person); might (could, would, or should) be: mean, + perish, should be, was, were.
Greek Monotonic
εἴην: ευκτ. του εἰμί (sum)· εἶεν, γʹ πληθ. αντί εἴησαν.
Russian (Dvoretsky)
εἴην: opt. к εἰμί.