from Latin innūbilus, from in- (in-) + nūbilus nubilous, cloudy, foggy, misty
From: The British Apollo,
Or, Curious Amusements for the Ingenious.
To which are added the most Material Occurrences Foreign and Domestick.
Perform'd by a Society of Gentlemen
From Wednesday, September 1st to Friday September 3d, 1708