A-rǽrnes

According to the Old English Dictionary:

-ness, e;

a-rǽrnes

f. A raising, an exaltation; exaltatio :-- Heora hrýre wearþ Athénum to arǽrnesse their fall was the raising of the Athenians, Ors. 3, 1; Bos. 53, 42. a-rærnes