Speedy
Untiring
Untiring adjective - Showing no signs of weariness even after long hard effort.
Speedy and untiring are semantically related. Sometimes you can use "Speedy" instead an adjective "Untiring".
Nearby Word: untiringly
Cite this Source
Untiring and Speedy. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/speedy/untiring
Speedy & Untiring. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/speedy/untiring>.
Untiring or Speedy. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/speedy/untiring.
Google Ngram Viewer shows how "speedy" and "untiring" have occurred on timeline