"Fearful." A river that pours from the east through poisoned vales, according to Völuspá:

From the east a river falls,
through venom dales,
with mire and clods,
Slid is its name.

In Grímnismál it is one of the rivers that flow from the spring Hvergelmir in Niflheimr. It appears to be one of the Élivágar.



  • Grímnismál, 28.
  • Gylfaginning, 4.
  • Völuspá, 40.