Implacable
Implacable adjective - Showing no signs of slackening or yielding in one's purpose.
Usage example: an implacable dedication to the proposition that everyone is entitled to a quality education
Ruthless is a synonym for implacable in merciless topic. In some cases you can use "Ruthless" instead an adjective "Implacable", when it comes to topics like inexorable. popular alternative
Nearby Words: implacability, implacably
Ruthless
Ruthless adjective - Having or showing a lack of sympathy or tender feelings.
Implacable is a synonym for ruthless in mean topic. You can use "Implacable" instead an adjective "Ruthless", if it concerns topics such as relentless. popular alternative
Nearby Words: ruthlessly, ruth
Mutual synonyms
Related pairs
- inflexible and implacable
- inflexible and ruthless
- unyielding and implacable
- unyielding and ruthless
- relentless and implacable
- relentless and ruthless
- harsh and implacable
- harsh and ruthless
- hard and implacable
- hard and ruthless
- fierce and implacable
- fierce and ruthless
- merciless and implacable
- merciless and ruthless
Both words in one sentence
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Implacable Man: After Sakuya falls into Reimu's trap, Reimu is absolutely ruthless in taking her down.
Source: Fan Fic / Fantasy Kaleidoscope - Nikita is the Trope Codifier, with Jean Reno playing Victor the cleaner — a ruthless Implacable Man feared even by the trained killers of the agency.
Source: Cleanup Crew
Cite this Source
Ruthless and Implacable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/implacable/ruthless
Implacable & Ruthless. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/implacable/ruthless>.
Ruthless or Implacable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/implacable/ruthless.
Google Ngram Viewer shows how "implacable" and "ruthless" have occurred on timeline