χορευτέον
From LSJ
Βίων δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Bion used to say that we have two teachers for death: the time before we were born and sleep | Bion said that there are two rehearsals for death: the time before being born and sleep
English (LSJ)
one must dance, E.Ba.324.
German (Pape)
[Seite 1365] adj. verb. von χορεύω, man muß Chortänze aufführen, Eur. Bacch. 305.
Greek (Liddell-Scott)
χορευτέον: ῥηματ. ἐπίθετον τοῦ χορεύω, δεῖ χορεύειν, Εὐρ. Βάκχ. 324.
Greek Monotonic
χορευτέον: ρημ. επίθ. του χορεύω, σε Ευρ.