Bíd-fæst

According to the Old English Dictionary:

bíd-fæst

adj. [bíd an abiding, delay; fæst fast, firm] Stationary, firm; stabilis :-- Hyre fóta wæs bídfæst [biidfæst MS.] óðer one of its feet was stationary, Exon. 114 a; Th. 438, 13; Rä. 57, 7. bid-fæst