For-þunden

According to the Old English Dictionary:

for-þunden

part. p. [þindan; p. þand; pp. þunden to swell] Swollen up; tŭmĭdus :-- Gyf seó wund forþunden sý if the wound is swollen up, Herb. 90, 16; Lchdm. i. 198, 11. for-þunden