Eácen-cræftig

According to the Old English Dictionary:

eácen-cræftig

adj. Exceedingly strong; vălĭdus, pollens, ingens :-- Wæs ðæt yrfe eácencræftig that heritage was exceedingly strong, Beo. Th. 6095; B. 3051: 4549; B. 2280. eacen-cræftig