Tough
Tough adjective - Not easily chewed.
Unmerciful and tough are semantically related. In some cases you can use "Unmerciful" instead an adjective "Tough".
Unmerciful
Unmerciful adjective - Having or showing a lack of sympathy or tender feelings.
Usage example: the critics were unmerciful in their assessments of the young actress's performance
Tough and unmerciful are semantically related. Sometimes you can use "Tough" instead an adjective "Unmerciful".
Nearby Word: unmercifully
Mutual synonyms
Cite this Source
Unmerciful and Tough. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/tough/unmerciful
Tough & Unmerciful. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/tough/unmerciful>.
Unmerciful or Tough. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/tough/unmerciful.
Google Ngram Viewer shows how "tough" and "unmerciful" have occurred on timeline