Fram-búgan

According to the Old English Dictionary:

fram-búgan

p. -beáh, pl. -bugon; pp. -bogen To turn from or away, leave; deflectĕre, declīnāre :-- Ðæt him ða frambugon [MS. frambugan], ðe hí betst getreówodon that those left them, whom they most trusted, Ors. 2, 5; Bos. 47, 44. fram-bugan