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Definition of implacable

implacable

/ɪmˈplæk.ə.bəl/
im · plac · a · ble
Adverb:implacably
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implacable Lexical Profile

implacable Game Scores & Validity

• adjective

1

Unable to be appeased, pacified, or mollified; forgiving or relenting under no circumstances.

Example

"Despite several public apologies, the critic remained an implacable opponent of the director's work."

2

Impossible to stop, alter, or prevent; relentless or inexorable in progression or effect.

Example

"The explorers struggled against the implacable advance of the arctic winter."

Synonyms
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Antonyms
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• Rhymes for implacable

• Nearby Words

impish
impishly
impishness
implacable
implacably
implant
implantable

Word Origin & Etymology

Borrowed in the early 16th century from Middle French implacable or directly from Latin implacabilis ('not easily appeased'), formed from the privative prefix in- ('not') and placare ('to soothe or appease'), sharing a root with 'placate' and 'placid'.

Cite this Entry

Wordmom. (2026). Definition of Implacable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/implacable
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