implacable
/ɪmˈplækəbəl/
adjective
implacable
/ɪmˈplækəbəl/
adjective
Britannica Dictionary definition of IMPLACABLE
[more implacable; most implacable]
:
opposed to someone or something in a very angry or determined way that cannot be changed
— implacably
/ɪmˈplækəbli/
adverb