Wiktionary
unmortgage
vb. To release from a mortgage.
Usage examples of "unmortgage".
The carriages therefore appeared at half past ten and rolled away, leaving Stephen, Diana, and Jagiello with a delightful sense of holiday, of free, unexpected, unmortgaged time.
Yet he arrives in Nylan with some well-made clothes and half-owner of an unmortgaged and valuable cargo that nets him more than a hundred golds.