Á-íþan

According to the Old English Dictionary:

á-íþan

p. de To lay waste, destroy, devastate:--Áiéþan abolere, Wrt.Voc. ii. 5, 7. Hé wolde for wera synnum eall áǽðan þæt on eorðan wæs, Gen. 1280. Áiéðende exterminans, Wrt. Voc. ii. 84, 53: 31, 27. Áíþende demolitus, 25, 41. [O. H. Ger. ar-óden vastare, devastare.] a-iþan