For-

According to the Old English Dictionary:

for-

Other forms of the prefix are fær, fer: e. g. faer-tyhted, Txts. 51, 483: fær-réd (fer-), 89, 1635: fer-uuaenid, for-uuened, 70, 548: fær-hæfdnes (for-). Past. 41, 14: fær-wyrd (for-), 133, 20: fer-ðrycednis, Ps. Srt. 31, 7. for-,for