Fremful-lic

According to the Old English Dictionary:

fremful-lic

adj. Profitable, advantageous, beneficial :-- Is swíðe fremfullic þæt gehwá hine gelóme and geornlíce tó Gode gebidde, Hml. Th. ii. 430, 3. Him ne ðúhte ná fremfullic ꝥ hé fénge tó þǽre gife, Hml. S. 31, 101. fremful-lic