im·pla·ca·ble 
/ɪmˈplækəbəl/ adjective
/ɪmˈplækəbəl/ adjective [more implacable; most implacable] : opposed to someone or something in a very angry or determined way that cannot be changed
▪ He has an implacable hatred for his political opponents. ▪ an implacable [=unyielding] opponent
▪ He has an implacable hatred for his political opponents. ▪ an implacable [=unyielding] opponent
— im·pla·ca·bly /ɪmˈplækəbli/ adverb
▪ They are implacably opposed to his proposals.
/ɪmˈplækəbli/ adverb ▪ They are implacably opposed to his proposals.
