Insistent and Pertinacious

Insistent

Insistent adjective - Continuing despite difficulties, opposition, or discouragement.
Usage example: Margaret Sanger is remembered as an insistent crusader for birth control

Pertinacious is a synonym for insistent in stubborn topic. In some cases you can use "Pertinacious" instead an adjective "Insistent", when it comes to topics like unyielding, diligent.

Pertinacious

Pertinacious adjective - Continuing despite difficulties, opposition, or discouragement.
Usage example: a pertinacious little boy who was determined to catch and collect reptiles

Insistent is a synonym for pertinacious in determined topic. You can use "Insistent" instead an adjective "Pertinacious", if it concerns topics such as obstinate, stubborn, unyielding, diligent.

Nearby Word: pertinacity
Cite this Source
Pertinacious and Insistent. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/insistent/pertinacious
Insistent & Pertinacious. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/insistent/pertinacious>.
Pertinacious or Insistent. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/insistent/pertinacious.
Google Ngram Viewer shows how "insistent" and "pertinacious" have occurred on timeline