For-belganボズワースとトラーラーのアングロ・サクソン古英語辞典 - for-belgan古英語辞典によると:for-belganp. bealg(-h), reflex. To get angry, get in a rage :-- Forbealh hé hine for þon þe ꝥ hrýþer him þúhte on wédenheorte, Bl. H. 199, 10. for-belgan