Un-sóþ
Bosworth & Toller Anglo-Saxon Old English Dictionary - un-sóþ
According to the Old English Dictionary:
es;
- un-sóþ
- n. Untruth, falsehood :-- Mid unsóðe sóð oferswíðan, Wulfst. 55, 16. Leáslíce híwian unsóð tó sóðe, 128, 9. Ic nelle secgan unsóð on me sylfe, Homl. Skt. i. 12, 195. un-soþ