: requiring or showing great energy and effort
Avoid all strenuous exercise until the sprain heals.
a strenuous climb
Today has been a very strenuous day.
strenuous efforts
The proposal has faced strenuous opposition.
Cite this Entry
“Strenuous.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/strenuous. Accessed 20 Jun. 2026.
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