Vaniloquie

much Babling. Dicacity, Vaniloquie.

Source: wiktionary

The writings, ſay they, of Theodorus being in all things conſonant to the vaniloquie of Neſtorius, are together with his, deſervedly rejected by the Councell of Epheſus, utpote anathemate quod adverſus Neſtorium factum eſt procedente etiam adverſus eos, qui ante illum ſimilia illi ſapuerunt: the Anathema which was pronounced againſt Neſtorius proceeding alſo againſt thoſe, who before Neſtorius thought the ſame which he did. […] And after this, thoſe other words of Proclus, written to Iohn Biſhop of Antioch, wherein he calleth the doctrines of Theodorus; or thoſe chapters which were collected out of his bookes, vaniloquie, monſtriloquie, Iudaicall impietie: […]

Source: wiktionary

Thirdly, returning to others againe, he complaineth of them, as proceeding to more ungodlineſſe, for they ſhall goe on to more ungodlineſſe; that is, they that uſe prophane vaniloquies.

Source: wiktionary

It is not therefore to be called Matheſis but Matæologie, not skill in Aſtrologie, but Vaniloquie, to go about by the ſtarres to foretell humane actions and events.

Source: wiktionary