inexorable Synonyms

adamant relentless unrelenting intransigent grim stern unappeasable unforgiving adamantine rigid resolute remorseless pitiless obstinate obdurate necessary merciless irrevocable irresistible iron ruthless set severe unyielding unshakable steadfast uncompromising unbending unavoidable stubborn stiff unstoppable unbendable uncompliant unpreventable steely insistent fixed firm fated fell doomed diamantine determined destined crushing cruel compulsory bullheaded bullhead