ἀνέξοδος
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
English (LSJ)
ον,
A with no outlet, not to be got out of impassable, Αχέρων Theoc.12.19; δυσχωρίαι D.H.3.59; λαβύρινθος AP12.93 (Rhian.). 2 ημέρα α. unfit for an expedition, Plu.2.269e. II of persons, conditions, etc., not coming into public, unsocial, ib.242e, 426b, etc.; βίος 1098d; διάνοια 610a; λόγοι α. without practical result, 1034b.
