Deorfan

According to the Old English Dictionary:

ic deorfe, ðú dyrfst, he dyrfþ,

DEORFAN

pl. deorfaþ; p. dearf, pl. durfon; pp. dorfen To labour; laborāre :-- Ne wiðcweðe ic to deorfenne gyt, gif ic nýdbehéfe eom gyt ðínum folce I refuse not to labour still, if I am yet needful to thy people, Homl. Th. ii. 516, 26. Þearle ic deorfe I labour very much, Coll, Monast. 19, 13. [O. Sax. far-dervan to perish: Ger. M. H. Ger. ver-derben to destroy, perish.] DER. ge-deorfan. deorfan