Laborious
Laborious adjective - Involved in often constant activity.
Both words in one sentence
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This sort of warfare was slow, laborious and terrifying, especially when Your Tunnel met Their Tunnel very suddenly.
Source: Buried Alive
Cite this Source
Slow and Laborious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/laborious/slow
Laborious & Slow. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/laborious/slow>.
Slow or Laborious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/laborious/slow.
Google Ngram Viewer shows how "laborious" and "slow" have occurred on timeline