lurkingly

[…] when the Feat of the Loose-Coat Skirmish happeneth to be done under-hand and privily, between two well-disposed, athwart the Steps of a Pair of Stairs, lurkingly, and in covert, behind a Suit of Hangings, or close hid and trussed upon an unbound Faggot, it is more pleasing to the Cyprian Goddess […] than to perform that Culbusting Art, after the Cynick manner, in the view of the clear Sunshine, or in a rich Tent, under a precious stately Canopy […]