θεσπέσιος θεός, ἔσπον ῀ εἶπον, v. θέσπις
I.properly of the voice, divinely sounding, divinely sweet, Hom., Pind.
II.that can be spoken by none but God, i. e. unspeakable, ineffable; hence,
1.like θεῖος, divine, Hom.; dat. fem. θεσπεσίῃ (sc. βουλῇ) by the will of God, id=Hom.; θ. ὁδός the way of divination, of Cassandra, Aesch.