Un-inseglian

According to the Old English Dictionary:

un-inseglian

p. ode To unseal :-- Hí (a casket) nán man ne uninsæglode ǽr hí ealle þyder cómon ... Se portgeréfa hí uninsæglode, Homl. Skt. i. 23, 762. Hig uninseglodon ðæt loc and cǽgan, Nicod. 14; Thw. 7, 11. un-inseglian