Synonyms of implacable in English:

implacable


See definition of implacable

adjective

1‘he was their most implacable critic’

SYNONYMS
unappeasable, unpacifiable, unplacatable, unmollifiable, unforgiving, unsparing, grudge-holding
inexorable, intransigent, adamant, determined, unshakeable, unswerving, unwavering, inflexible, unyielding, unbending, uncompromising, unrelenting, relentless, ruthless, remorseless, merciless, pitiless, heartless, cruel, hard, harsh, stern, steely, tough