Un-sac
Bosworth & Toller Anglo-Saxon Old English Dictionary - un-sac
According to the Old English Dictionary:
(-sæc?);
- un-sac
- adj. Free from any charge :-- Unsac hé wæs on lífe no charge was brought against him while alive, Lchdm. iii. 288, 6. and cf. Icel. ú-sekr not guilty. un-sac