Un-gewiss

According to the Old English Dictionary:

un-gewiss

ignorance. Add :-- Hé nyste hwæs he geléfan sceolde, þá hine þá swýþost drehton and on ungewisse gebróhton þe his witan beón sceoldon, Hml. S. 23, 398. Rómáne swíþost for þǽm besierede wǽroiþe him þæt land uncúþre wæs þonne hit Somnitum wǽre, and on ungewis on án nirewett befóran, Ors. 3, 8; S. 120, 29. un-gewiss