Un-syn[n]

According to the Old English Dictionary:

e;

un-syn[n]

f. Not guilt, not crime :-- Ne húru Hildeburh herian þorfte Eótena treowe; unsynnum (with no faults on her part, undeservedly; gratis. Cf. un-synnig, II) wearð beloren leófum æt ðam lindplegan, bearnum and bróðrum, Beo. Th. 2149; B. 1072. un-synn