Pertinacious and Untiring

Pertinacious

Pertinacious adjective - Continuing despite difficulties, opposition, or discouragement.

Untiring and pertinacious are semantically related In some cases you can use "Untiring" instead an adjective "Pertinacious".

Nearby Word: pertinacity

Untiring

Untiring adjective - Showing no signs of weariness even after long hard effort.
Usage example: the detective's untiring investigation of the crime finally led to several arrests

Pertinacious and untiring are semantically related in determined topic. Sometimes you can use "Pertinacious" instead an adjective "Untiring", if it concerns topics such as vigorous.

Nearby Word: untiringly
Cite this Source
Untiring and Pertinacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/pertinacious/untiring
Pertinacious & Untiring. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/pertinacious/untiring>.
Untiring or Pertinacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/pertinacious/untiring.
Google Ngram Viewer shows how "pertinacious" and "untiring" have occurred on timeline