unalterable” is code for “we have no intention of changing the system, period.
She had loved this unalterable good-temper of his, and admired the tactful way he had of humouring women.
To doing this, in a book, I have an unfashionable but unalterable objection.
They are turned from their historical meaning and presented as unalterable and sacred things-in-themselves.
Lewis answered that on that point his resolution was unalterable.
It made it easier to talk of the future she had arranged, which now was an unalterable thing.
Time, with its seasons, passes him in unalterable procession.
He felt one clear, unalterable conviction—under God, it should not be for long.
But he continued to shake his head with an air of unalterable resolution.
For what modest person would venture to maintain his own experience to be altogether and absolutely firm and unalterable?