adjective \(ˌ)im-ˈpla-kə-bəl, -ˈplā-\

: opposed to someone or something in a very angry or determined way that cannot be changed

Full Definition of IMPLACABLE

:  not placable :  not capable of being appeased, significantly changed, or mitigated <an implacable enemy>
im·pla·ca·bil·i·ty \-ˌpla-kə-ˈbi-lə-tē, -ˌplā-\ noun
im·pla·ca·bly \-ˈpla-kə-blē, -ˈplā-\ adverb

Examples of IMPLACABLE

  1. He has an implacable hatred for his political opponents.
  2. <an implacable judge who knew in his bones that the cover-up extended to the highest levels of government>


Middle English, from Latin implacabilis, from in- + placabilis placable
First Known Use: 15th century


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