Heals-fæst

According to the Old English Dictionary:

heals-fæst

Substitute: With unbending neck, defiant, unsubmissive, proud, contemptuous :-- Hire (Hagar) mód ástáh þá heó wæs magotimbre eácen worden, ongan æfþancum ágendfreán halsfæst herian (cf. Agar concepisse se videns despexit dominam suam, Gen. 16, 4), Gen. 2238. heals-fæst