ὀνομαστέον

οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → keeping silence is not shameful; speaking at random is (Menander)

Click links below for lookup in third sources:

Full diacritics: ὀνομαστέον	Medium diacritics: ὀνομαστέον	Low diacritics: ονομαστέον	Capitals: ΟΝΟΜΑΣΤΕΟΝ
Transliteration A: onomastéon	Transliteration B: onomasteon	Transliteration C: onomasteon	Beta Code: o)nomaste/on

English (LSJ)

ὀνομαστέον: ῥημ. ἐπίθ. τοῦ ὀνομάζω, δεῖ ὀνομάζειν, Πλάτ. Κρατ. 387D.

adj. verb. de ὀνομάζω.