IMPLACABLE Synonyms: 128 Similar and Opposite Words

implacable

adjective

(ˌ)im-ˈpla-kə-bəl

Definition of implacable

as in adamant

sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion an implacable judge who knew in his bones that the cover-up extended to the highest levels of government

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in relentless

showing no signs of slackening or yielding in one's purpose an implacable dedication to the proposition that everyone is entitled to a quality education

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of implacable But bonding keeps getting interrupted as big, implacable questions rear their head, like wildebeests slowly amassing and waiting to stampede. — Sara Holdren, Vulture, 20 May 2026 As this Premier League campaign has perhaps demonstrated more than most others, Villa do not need to be implacable to achieve their objectives. — Jacob Tanswell, New York Times, 26 Apr. 2026 But absent an oil-rich ally, like Russia or Venezuela, and faced with an implacable enemy, Cuban officials may have no choice but to bring Cuba back into the orbit of American power, at least for now. — Joseph J. Gonzalez, The Conversation, 23 Mar. 2026 But as all the world knows, Edmond Dantès did rise again, transformed from an innocent young sailor into that courtly yet implacable avenger, the Count of Monte Cristo. — Michael Dirda, The New York Review of Books, 19 Mar. 2026 See All Example Sentences for implacable

Recent Examples of Synonyms for implacable

Adjective

Her mom handmade her dress Parton was adamant about having her mom, Avie Lee Parton, present for her nuptials.

— Nicole Briese, PEOPLE, 27 Aug. 2026
But Coppola was adamant, and Eastman used her leverage to help secure Pacino’s place.

— Tom Tapp, Deadline, 27 Aug. 2026

Definition of adamant

Adjective

The gross margin outlook was a bit lower than expected, with Kress attributing the crunch to the relentless rise in memory prices, both for the remainder of this fiscal year and for fiscal 2028.

— Zev Fima, CNBC, 27 Aug. 2026
Fans, artists, and leaders across all industries are mourning the star whose relentless optimism, grace, and resilience was a shining light.

— Charisma Madarang, Rolling Stone, 26 Aug. 2026

Definition of relentless

Adjective

The increasing chances of being taken, whether one is in a church, mosque, school, on a trip to the capital Abuja or resting at home, is a grim reality that should not be the case given Tinubu’s firm campaign pledges.

— Alexander Onukwue, semafor.com, 31 Aug. 2026
The chattiness of Eddy’s dispatches does little to conceal that the novel’s Jamaica is a grim place for gay men.

— Katy Waldman, New Yorker, 31 Aug. 2026

Definition of grim

Adjective

But the same steadfast pursuit that’s placed the attorney at the center of nearly every call for racial justice in the past decade has earned Crump more than a few detractors.

— Ryan Young, CNN Money, 30 Aug. 2026
In spite of the steadfast testimony of those who went over the antlers as meticulously as anyone could, there are still many detractors.

— Richard P. Smith, Outdoor Life, 27 Aug. 2026

Definition of steadfast

Adjective

With his newfound resolve/death wish, Jacob is determined to keep his sister’s and nephew’s killers on that bridge until backup arrives.

— Chris Klimek, Vulture, 26 Aug. 2026
The National Hurricane Center has a set number of lists, which include one pre-determined name for every letter of the alphabet, that are used on a rotational basis, according to the World Meteorological Organization (WMO).

— Kimberlee Speakman, PEOPLE, 26 Aug. 2026

Definition of determined

Adjective

In his inaugural Jackson Hole speech as chairman, Warsh warned that persistent inflation may necessitate further monetary tightening.

— William Pesek, Forbes.com, 31 Aug. 2026
Mehta increased his price target on FANG stock to $220 from $212 and reiterated a buy rating, citing the company's capital-efficient volume growth as oil prices remain high amid persistent supply disruption in the Middle East.

— TipRanks.com Staff, CNBC, 30 Aug. 2026

Definition of persistent

Browse Nearby Words

implacability

implacable

implant

See all Nearby Words

Cite this Entry

Style

“Implacable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/implacable. Accessed 1 Sep. 2026.

Copy Citation

Synonyms of implacable

adjective

Example Sentences

Browse Nearby Words

Podcast

Cite this Entry

More from Merriam-Webster

Word of the Day

conscientious

Popular in Grammar & Usage

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Why does English have so many silent letters?

7 Pairs of Commonly Confused Words

Popular in Wordplay

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Even More Words That Sound Like Insults But Aren't

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World

Popular

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Games & Quizzes