unalter

The participation of matter in electromagnetic phenomena has its origin only in the fact that the elementary particles of matter carry unalter - able electric charges, and, on this account are subject on the one hand to the actions of ponderomotive forces and on the other hand possess the property of generating a field.

Out Of My Later Years Einstein, Albert, 1879-1955 1950

As death is certain: the. time when unknown; the eon - sequences awful or glorious, as the temper of the heart may be in time; as the future state is unalter - ably fixed at death; so it becomes every one to be in constant preparation for dying.

A sermon, delivered next Lord's day after the interment of Lieut. Thomas R. Roby, who died Sept. 12, 1811, in the thrity-second year of his age. By David L. Morril Morrill, David Lawrence, 1772-1849. [from old catalog] 1812

We have patched up another peace, upon fatis - faition for what is paft, and promife of amendment for the future, of which I have but little hopes, confidering it is abfolutely the uncle's humour; and what at firft watf thought peevifh, is now feen clearly to be an unalter - able difpofition.

A Collection of Original Royal Letters 1787