Middle English word forburnen comes from Old English biernan ((intransitive) To burn.), Old English for-, Old English forbærnan, Middle English forbyrnan, Old English forbeornan

Detailed word origin of forburnen

Dictionary entry	Language	Definition
biernan	Old English (ang)	(intransitive) To burn.
for-	Old English (ang)	Forming verbs from verbs with various senses especially ‘wrongly, away from, astray, abstention, prohibition, perversion, destruction’. Used to create intensified adjectives and verbs from other adjectives and verbs, with the sense of completely or fully. Compare Modern English use of up. Very.
forbærnan	Old English (ang)
forbyrnan	Middle English (enm)
forbeornan	Old English (ang)
forbiernan	Old English (ang)	To burn up, burn away, be consumed by fire.
forbrinnen	Middle English (enm)

Words with the same origin as forburnen