Liss

According to the Old English Dictionary:

liss

Add: mitigation, cessation :-- Swégde út ormǽte wyllspring . . . Hí micclum blissodon, and Gode þancodon heora geswinces lisse (they thanked God for the alleviation of their hardship), Hml. Th. i. 562, 17. [N. E. D. liss.] liss