ἐρωτητέον
From LSJ
Φιλοσοφίαν δὲ τὴν μὲν κατὰ φύσιν, ὦ Βασιλεῦ, ἐπαίνει καὶ ἀσπάζου, τὴν δέ θεοκλυτεῖν φάσκουσαν παραίτου. → Praise and revere, O King, the philosophy that accords with nature, and avoid that which pretends to invoke the gods. (Philostratus, Ap. 5.37)
English (LSJ)
verb. Adj.
A one must ask, ἐρώτημα Arist.APo.77b7.
Greek (Liddell-Scott)
ἐρωτητέον: ῥημ. ἐπίθ. τοῦ ἐρωτῶ, δεῖ ἐρωτᾶν, Ἀριστ. Ἀναλυτ. Ὕστ. 1. 12, 2.