implacable synonyms

Here's a list of possible synonyms and antonyms for the term implacable:

Princeton's WordNet

  1. implacableadjective

    incapable of being placated

    appeasable, placable, conciliable, mitigable

Dictionary of English Synonymes

  1. implacableadjective

    malicious, vindictive, inexorable, unrelenting, relentless, rancorous, unappeasable, cruel

PPDB, the paraphrase database

List of paraphrases:

relentless, unrelenting, ruthless, unforgiving, merciless, inexorable, remorseless, irreconcilable, hard-hitting, pitiless, intransigent