Hard
Strenuous
Strenuous adjective - Requiring considerable physical or mental effort.
Usage example: a strenuous workout on the obstacle course
Hard is a synonym for strenuous in difficult topic. You can use "Hard" instead an adjective "Strenuous", if it concerns topics such as arduous, rigid, demanding, tiresome.
Nearby Word: strenuously
Mutual synonyms
Both words in one sentence
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Sometimes a hard and strenuous workout isn't worth the effort to get muscles, or the character just isn't that well-built.
Source: Fake Muscles -
One is that the life is strenuous and therefore the savage is nobly brave, hard-working, and honorable.
Source: Noble Savage -
Foreshadowing: If a character is described as not breathing hard but feeling hot after some strenuous activity, that means they are a robot.
Source: Fanfic / Marionettes
Cite this Source
Strenuous and Hard. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/hard/strenuous
Hard & Strenuous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/hard/strenuous>.
Strenuous or Hard. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/hard/strenuous.
Google Ngram Viewer shows how "hard" and "strenuous" have occurred on timeline