Inexorable
Pronunciation : In*ex"o*ra*ble
Part of Speech : a.
Etymology : [L. inexorabilis: cf. F. inexorable. See In- not, and Exorable, Adore.]
Definition : Defn: Not to be persuaded or moved by entreaty or prayer; firm; determined; unyielding; unchangeable; inflexible; relentless; as, an inexorable prince or tyrant; an inexorable judge. "Inexorable equality of laws." Gibbon. "Death's inexorable doom." Dryden. You are more inhuman, more inexorable, O, ten times more than tigers of Hyrcania. Shak.
Source : Webster's Unabridged Dictionary, 1913