Noah Webster
Inexorable
INEX'ORABLE, adjective [Latin inexorabilis; in and exorabilis, from exoro, to entreat; ex and oro, to pray.]
1. Not to be persuaded or moved by entreaty or prayer; too firm and determined in purpose to yield to supplication; as an inexorable prince or tyrant; an inexorable judge.
2. Unyielding; that cannot be made to bend.
Inexorable equality of laws.