Grund-fús

According to the Old English Dictionary:

grund-fús

adj. Ready for hell, hastening to hell :-- Ðæt biþ feóndes bearn hafaþ grundfúsne gǽst that is a child of the devil, hath a spirit hastening hellwards, Exon. 84 a; Th. 316, 15; Mód. 49. grund-fus