Intense
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
Intense and untiring are semantically related in vigorous topic. Sometimes you can use "Intense" instead an adjective "Untiring".
Nearby Word: untiringly
Mutual synonyms
Cite this Source
Untiring and Intense. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/intense/untiring
Intense & Untiring. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/intense/untiring>.
Untiring or Intense. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/intense/untiring.
Google Ngram Viewer shows how "intense" and "untiring" have occurred on timeline