Implacable and Spineless
Opposite meaning words
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
Spineless is an antonym for implacable.
Nearby Words: implacability, implacably
Spineless
Spineless adjective - Lacking strength of will or character.
Implacable is an antonym for spineless.
Cite this Source
Spineless and Implacable. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/implacable/spineless
Implacable & Spineless. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/implacable/spineless>.
Spineless or Implacable. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/implacable/spineless.
Google Ngram Viewer shows how "implacable" and "spineless" have occurred on timeline