ventosity

On the one hand, a sternness and a coarseness of structure which changes its stem into a stake, and its leaf into a spine; on the other, an utter flaccidity and ventosity of structure, which changes its stem into a riband, and its leaf into a bubble.

Both of them were youths of a Sprightly Genius, and of an Alert Apprehension, attended, in the case of GRANDOLPH, with a mighty heat and ebullition of Fancy, which led early to a certain frothiness or ventosity in speech.