Morþ-wyrhta
Bosworth & Toller Anglo-Saxon Old English Dictionary - morþ-wyrhta
According to the Old English Dictionary:
an;
- morþ-wyrhta
- m. One who causes death (by witchcraft or poison) :-- Wiccan oððe wigleras, mánsworan oððe morþwyrhtan, L.E.G. 11; Th. i. 172, 20 (see note): L. Eth. vi. 7, 36; Th. i. 316, 21, 324, 11: L.C.S. 4; Th. i. 378, 7: Wulfst. 266, 25.