Active
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
Active and untiring are semantically related. Sometimes you can use "Active" instead an adjective "Untiring".
Nearby Word: untiringly
Mutual synonyms
Cite this Source
Untiring and Active. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/active/untiring
Active & Untiring. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/active/untiring>.
Untiring or Active. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/active/untiring.
Google Ngram Viewer shows how "active" and "untiring" have occurred on timeline