adj.

Impossible to placate or appease: implacable foes; implacable suspicion.

[Middle English, from Old French, from Latin implācābilis : in-, not; see in–¹ + plācābilis, placable; see placable.]

implacability im·plac'a·bil'i·ty or im·plac'a·ble·ness n.
implacably im·plac'a·bly adv.

adjective

Firmly, often unreasonably immovable in purpose or will: adamant, adamantine, brassbound, die-hard, grim, incompliant, inexorable, inflexible, intransigent, iron, obdurate, relentless, remorseless, rigid, stubborn, unbendable, unbending, uncompliant, uncompromising, unrelenting, unyielding. Idioms: stubborn as amuleox. See resist/yield.

adj

Definition: merciless, cruel
Antonyms: kind, merciful, nice, placable

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IN BRIEF: Incapable of being pleased.

If there is a sin against life, it consists perhaps not so much in despairing of life as in hoping for another life and in eluding the implacable grandeur of this life. — Albert Camus (1913-1960), French philosopher and writer, Nobel Prize winner.

Dansk (Danish)
adj. - uforsonlig

Nederlands (Dutch)
onverzoenlijk, onverbiddelijk

Français (French)
adj. - implacable

Deutsch (German)
adj. - unversöhnlich

Ελληνική (Greek)
adj. - αδυσώπητος, ανηλεής, άτεγκτος, ανένδοτος

Italiano (Italian)
implacabile

Português (Portuguese)
adj. - implacável

Русский (Russian)
неумолимый, безжалостный

Español (Spanish)
adj. - implacable, inexorable

Svenska (Swedish)
adj. - oförsonlig, obeveklig

中文（简体） (Chinese (Simplified))
难宽恕的, 执拗的, 难和解的

中文（繁體） (Chinese (Traditional))
adj. - 難寬恕的, 執拗的, 難和解的

한국어 (Korean)
adj. - 달래기 어려운, 용서 없는, 앙심 깊은

日本語 (Japanese)
adj. - なだめられない, 執念深い

العربيه (Arabic)
‏(صفه) عنيد, حقود‏

עברית (Hebrew)
adj. - ‮קשה, שאין לפייסו‬

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