[ sȳd] == [sīd]

+sydian = [+sidian]

[ syfan] == [seofon]

syfe = [sife]

[ sȳferǣte] abstemious, RB 11925.

[ sȳferlic] (ē) neat, cleanly, pure, sober. adv. -līce.

[ sȳferne] asm. of [sȳfre].

[ sȳfernes] f. cleanliness, purity, sobriety, moderation, Æ.

syfeða = [seofoða]

syfian = [seofian]