Pertinacity and Relentlessness

Pertinacity

Pertinacity noun - A steadfast adherence to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Usage example: without the pertinacity of the suffragists, voting rights for women would never have become a reality

Relentlessness and pertinacity are semantically related In some cases you can use "Relentlessness" instead a noun "Pertinacity".

Nearby Word: pertinacious

Relentlessness

Relentlessness noun - Mercilessness characterized by an unwillingness to relent or let up.
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Synonyms for Relentlessness

Pertinacity and relentlessness are semantically related in stubbornness topic. You can use "Pertinacity" instead a noun "Relentlessness".
Cite this Source
Relentlessness and Pertinacity. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/pertinacity/relentlessness
Pertinacity & Relentlessness. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/pertinacity/relentlessness>.
Relentlessness or Pertinacity. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/pertinacity/relentlessness.
Google Ngram Viewer shows how "pertinacity" and "relentlessness" have occurred on timeline