Un-geteórode

According to the Old English Dictionary:

un-geteórode

adv. (?). Indefatigably, unweariedly :-- Sume preóstas sýn þe ungeteórode (or adj. ?) ealne dæg ádreógað ymbe woroldþing sunt quidam clericorum qui in secularibus negotiis pene totum infatigabiliter deducunt diem, Chrd. 34, 8. un-geteorode