Mortal
Mortal adjective - Likely to cause or capable of causing death.
Relentless is a synonym for mortal in unrelenting topic. In some cases you can use "Relentless" instead an adjective "Mortal", when it comes to topics like irreconcilable, deadly.
Relentless
Relentless adjective - Showing no signs of slackening or yielding in one's purpose.
Mortal is a synonym for relentless in cruel topic. Sometimes you can use "Mortal" instead an adjective "Relentless".
Nearby Word: relentlessly
Mutual synonyms
Both words in one sentence
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There's also a more pragmatic reason: the very first Law of Magic is that Thou Shalt Not Kill a mortal with magic, and doing so earns you the wrath of the Wardens, relentless wizard "cops" who enforce the Laws with Anti-Magic Cool Swords.
Source: Guns Are Worthless
Cite this Source
Relentless and Mortal. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/mortal/relentless
Mortal & Relentless. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/mortal/relentless>.
Relentless or Mortal. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/mortal/relentless.
Google Ngram Viewer shows how "mortal" and "relentless" have occurred on timeline