implacable

[ im-plak-uh-buhl, -pley-kuh- ]

adjective

1. not to be appeased, mollified, or pacified; inexorable:

   an implacable enemy.

   Synonyms: unappeasable, merciless, unbending

implacable

/ ɪmˈplækəbəl /

adjective

1. incapable of being placated or pacified; unappeasable
2. inflexible; intractable

Derived Forms

• imˈplacably, adverb
• imˌplacaˈbility, noun

Other Words From

• im·placa·bili·ty im·placa·ble·ness noun
• im·placa·bly adverb

Word History and Origins

Origin of implacable¹

First recorded in 1375–1425; late Middle English word from Latin word implācābilis. See im- ², placable

Synonym Study

See inflexible.

Example Sentences

These implacable sentries and imperial and courtly surveillance robots and AIs are theoretically superior to the human beings who would otherwise be entrusted with these tasks.

From Popular-Science

His curse is not just working like an architect works, with grueling hours and implacable clients, although that’s true.

From Nautilus

It’s me who is the victim here of foes who are implacable, Who hope that I am finally politically attackable.

From Washington Post

Esther and Mordecai confront a hostile host society and an implacable bureaucracy.

From The Daily Beast

Norm is a symbol of implacable corporate power—preening, surgically perfected, casually domineering.

From The Daily Beast

And so DeMint, an implacable foe of Obamacare, will now get paid to run the organization that helped incubate Obamacare.

From The Daily Beast

Abandoned its implacable opposition to the International Red Cross.

From The Daily Beast

Within a sentence, Funes and his implacable memory are dead, as is God.

From The Daily Beast

Hence it was that he found in Great Britain an implacable enemy ever stirring up against him European coalitions.

From Project Gutenberg

But the loathsome death of this brutal voluptuary soon delivered the church from the most implacable of its foes.

From Project Gutenberg

But this way of dealing with the message was far too mild and moderate to satisfy the implacable malice of Howe.

From Project Gutenberg

But the implacable Venus stares through the world with her steady marble eyes.

From Project Gutenberg

Ren took them in at the door, with his rifle in the hollow of his arm, and he was as implacable as a ticket taker at the opera.

From Project Gutenberg

Related Words

• inexorable
• intractable
• relentless
• ruthless
• uncompromising
• unforgiving
• unrelenting
• unyielding