Fals

According to the Old English Dictionary:

es;

fals

n. Add :-- Ꝥ deófol his falses tó fela ongemang þǽre heorde ne gesáwe. Ne wyrð nǽfre folces wíse wel gerǽde on þám earde þe man mǽst falses lufað, Ll. Th. ii. 312, 26-29. Buton ǽlcon false, Wlfst. 272, 3. fals