ungrund, n.All

Ungrund (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the third kind of ground: neither a true foundation nor an abyss, but one that merely offers the perhaps necessary illusion of a foundation.