Mortiferous
Relentless and mortiferous are semantically related. in deadly topic. In some cases you can use "Relentless" instead an adjective "Mortiferous".
Relentless
Relentless adjective - Showing no signs of slackening or yielding in one's purpose.
Mortiferous and relentless are semantically related. Sometimes you can use "Mortiferous" instead an adjective "Relentless".
Nearby Word: relentlessly
Mutual synonyms
Cite this Source
Relentless and Mortiferous. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/mortiferous/relentless
Mortiferous & Relentless. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/mortiferous/relentless>.
Relentless or Mortiferous. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/mortiferous/relentless.
Google Ngram Viewer shows how "mortiferous" and "relentless" have occurred on timeline