Cwealm-bealu

According to the Old English Dictionary:

cwealm-bealu

gen. -bealuwes; n. [bealo, bealu bale, evil] Deadly evil; cædis malum :-- Ðæt hit móste cwealmbealu cýðan that it must make known the deadly evil, Beo. Th. 3884; B. 1940. cwealm-bealu