Where does “lotny” come from?

lotny (Polish) comes from Polish lot, from French Lot, from Middle French lot, from Old French loz, from Frankish lot, from Proto-Germanic hlutą, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

lotny (Polish): gaseous, ethereal; volatile; agile, nimble,...