An-byrdnys
Bosworth & Toller Anglo-Saxon Old English Dictionary - an-byrdnys
According to the Old English Dictionary:
nyss, e;
- an-byrdnys
- f. [an contra, byrdnys status] Resistance; repugnantia :-- Gif ǽnig man anbyrdnysse beginþ if any man begin resistance, L. Edg. S. 14; Th. i. 276, 31.