Un-cnyttan

According to the Old English Dictionary:

un-cnyttan

p. te To unknot, untie :-- Ðæs ne eom ic wyrðe ðæt ic his sceóna þwanga búgende uncnytte cujus non sum dignus procumbens soluere corrigiam calciamentorum eius, Mk. Skt. 1, 7: Lk. 3, 16. (Wǽron) uncnytte (vinculorum ligamina) enodarentur, solverentur, Hpt. Gl. 482, 59. un-cnyttan