Be-dyrnan
Bosworth & Toller Anglo-Saxon Old English Dictionary - be-dyrnan
According to the Old English Dictionary:
bi-dyrnan;
- be-dyrnan
- p. de; pp. ed To hide, conceal; occultare :-- Ne mihte him bedyrned wyrþan it might not be hidden from him, Cd. 14; Th. 17, 18; Gen. 261 : Elen. Kmbl. 1201; El. 602 : 1164; El. 584.