Meaning

adjective not to be placated or appeased or moved by entreaty

adjective impervious to pleas, persuasion, requests, reason; ; - W.Churchill

originFrom Middle French inexorable, from Latin inexōrābilis (“relentless, inexorable”) (or directly from the Latin word), from in- (prefix meaning ‘not’) + exōrābilis (“that may be moved or persuaded by entreaty; exorable”). Exōrābilis is derived from exōrāre (from exōrō (“to persuade, win over; to beg, entreat, plead”), from ex- (prefix meaning ‘out of’) + ōrō (“to beg, entreat, plead, pray; to…

Etymology from Wiktionary, CC BY-SA 3.0