ὀρκῆσι
From LSJ
βωμὸν Ἀριστοτέλης ἱδρύσατο τόνδε Πλάτωνος, ἀνδρὸς ὃν οὐδ' αἰνεῖν τοῖσι κακοῖσι θέμις → Aristotle had this altar of Plato set up — Plato, a man whom the wicked dare not even mention in praise
English (LSJ)
barbarism for ὀρχῆται, Ar.Th.1179.
Greek (Liddell-Scott)
ὀρκῆσι: βαρβαρισμὸς ἀντὶ ὀρχησάσθω, Ἀριστοφ. Θεσμ. 1179.
Russian (Dvoretsky)
ὀρκῆσι: Arph. в произнош. скифа (= ὀρχησάσθω) пускай пляшет.