For-wisnian

According to the Old English Dictionary:

for-wisnian

p. ode, ade; pp. od, ad To wither or wizen away, dry up, decay; marcescĕre, arescĕre, tābescĕre, putrescĕre :-- Wyrt forwisnaþ, weorþeþ to duste herba indūret, et arescat, Ps. Th. 89, 6: 101, 23. Ðæt biþ forwisnad wraðe sóna, ǽr hit afohten foldan losige quod priusquam evellātur, arescit, 128, 4. To hwan drehtest ðú me eal forwisnad wherefore didst than torture me all decayed? Soul Kmbl. 36; Seel. 18. for-wisnian