im·​pla·​ca·​ble | \ (ˌ)im-ˈpla-kə-bəl How to pronounce implacable (audio) , -ˈplā- How to pronounce implacable (audio) \

Definition of implacable

: not placable : not capable of being appeased, significantly changed, or mitigated an implacable enemy

Other Words from implacable

implacability \ (ˌ)im-​ˌpla-​kə-​ˈbi-​lə-​tē How to pronounce implacable (audio) , -​ˌplā-​ \ noun
implacably \ (ˌ)im-​ˈpla-​kə-​blē How to pronounce implacable (audio) , -​ˈplā-​ \ adverb

How Should You Use implacable?

Implacable is based on the Latin verb placare, meaning "to calm" or "to soothe." It joins the negative im- to the root to describe something that cannot be calmed or soothed or altered. The root placare also gave us placate. You may ask, what about the similar-looking words placid and placebo? These words are related to implacable and placate, but not as closely as you might suspect. They come from the Latin verb placēre, a relative of placare that means "to please."

Examples of implacable in a Sentence

He has an implacable hatred for his political opponents. an implacable judge who knew in his bones that the cover-up extended to the highest levels of government
Recent Examples on the Web As in the actual installation, the lines appear implacable while the setting wobbles. Washington Post, 14 Jan. 2022 But the spirit of the poem rings true to anyone who has lived through the unyielding and seemingly endless reality of an implacable earth that cares not whether the creatures that depend upon it live or die. The Salt Lake Tribune, 4 Jan. 2022 Though voting rights activists pressed Democratic senators to keep working, the filibuster—and the refusal of West Virginia’s Joe Manchin and Arizona’s Kyrsten Sinema to support changes in it—remained an implacable foe. Matt Ford, The New Republic, 7 Dec. 2021 In some cases, that has crystallized into something more implacable: an ideological refusal to have the shot. New York Times, 22 Dec. 2021 When Betty, a nosy Compton neighbor, calls social services on the Williams family because their father (Will Smith) has had the girls practicing in a rainstorm, the implacable Oracene crosses the street. Thelma Adams, Variety, 16 Dec. 2021 Whether or not these things happened is beside the point, not just because storytellers are entitled to some artistic license, but because this particular story unfolds in the shadow of such a stark, implacable reality. Los Angeles Times, 11 Nov. 2021 This framing will be perfectly accurate: the final shape of the bill will reflect the Manchinema roadblock and also the implacable hostility of the G.O.P. John Cassidy, The New Yorker, 25 Oct. 2021 As the regal, implacable Titania, queen of the fairies, Lauren Fadeley, in a ballet skirt that seems fashioned of sea foam, dances with powerful emphases, but her grinning, one-note facial expressions are far from aristocratic. Robert Greskovic, WSJ, 18 Oct. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'implacable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of implacable

15th century, in the meaning defined above

History and Etymology for implacable

Middle English, from Latin implacabilis, from in- + placabilis placable

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The first known use of implacable was in the 15th century

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Last Updated

16 Jan 2022

Cite this Entry

“Implacable.” Dictionary, Merriam-Webster, Accessed 16 Jan. 2022.

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More Definitions for implacable



English Language Learners Definition of implacable

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


im·​pla·​ca·​ble | \ im-ˈpla-kə-bəl How to pronounce implacable (audio) , -ˈplā- \

Kids Definition of implacable

: impossible to please, satisfy, or change implacable enemies

More from Merriam-Webster on implacable

Nglish: Translation of implacable for Spanish Speakers

Britannica English: Translation of implacable for Arabic Speakers


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