Feverish
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
Feverish and untiring are semantically related. Sometimes you can use "Feverish" instead an adjective "Untiring".
Nearby Word: untiringly
Mutual synonyms
Cite this Source
Untiring and Feverish. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/feverish/untiring
Feverish & Untiring. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/feverish/untiring>.
Untiring or Feverish. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/feverish/untiring.
Google Ngram Viewer shows how "feverish" and "untiring" have occurred on timeline