Cruel
Implacable
Implacable adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Cruel is a synonym for implacable in ruthless topic. Sometimes you can use "Cruel" instead an adjective "Implacable", if it concerns topics such as inexorable.
Nearby Words: implacability, implacably
Mutual synonyms
Related pairs
Both words in one sentence
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They have a reputation for being cruel and implacable warriors who torture prisoners graphically in their chapterhouses.
Cite this Source
Implacable and Cruel. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/cruel/implacable
Cruel & Implacable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/cruel/implacable>.
Implacable or Cruel. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/cruel/implacable.
Google Ngram Viewer shows how "cruel" and "implacable" have occurred on timeline