Persistent
Persistent adjective - Continuing despite difficulties, opposition, or discouragement.
Unmerciful and persistent are semantically related in relentless topic. In some cases you can use "Unmerciful" instead an adjective "Persistent".
Unmerciful
Unmerciful adjective - Going beyond a normal or acceptable limit in degree or amount.
Persistent and unmerciful are semantically related in relentless topic. Sometimes you can use "Persistent" instead an adjective "Unmerciful".
Nearby Word: unmercifully
Mutual synonyms
Cite this Source
Unmerciful and Persistent. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/persistent/unmerciful
Persistent & Unmerciful. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/persistent/unmerciful>.
Unmerciful or Persistent. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/persistent/unmerciful.
Google Ngram Viewer shows how "persistent" and "unmerciful" have occurred on timeline