σέων
From LSJ
Ποιητὴς, ὁπόταν ἐν τῷ τρίποδι τῆς Μούσης καθίζηται, τότε οὐκ ἔμφρων ἐστίν → Whenever a poet is seated on the Muses' tripod, he is not in his senses
Greek (Liddell-Scott)
σέων: γεν. πληθ. τοῦ σής.
Greek Monotonic
σέων: γεν. πληθ. του σής.
Dutch (Woordenboekgrieks.nl)
σέων gen. plur. van σής.