forþ-síþ
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In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
forþ-síþ
AddExitium, i. periculum forþsíþ, útsíþ mors perdictio, Wülck. Gl. 231, 10. Ðonne him forðsíð gebyrige gýme his hláford ðæs hé lǽfe, Ll. Th. i. 434, 27. Behealdað hiera líf and hira forðsiið, Past. 205, 16. Hé þám bróþrum cýðde hyre forðsíð (obitum ), Gr. D. 169, 14: Hml. Th. ii. 184, 19. v. for-síþ.
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A Combined List of Abbreviations.