adj
strenuous
STREH-nyoo-uhs
adj
1
Requiring a great deal of physical or mental effort.
"Hiking to the summit was far more strenuous than they expected."
"She made strenuous efforts to fix the misunderstanding."
How to Use Strenuous
Learner’s notesIn plain EnglishDemanding a lot of effort or energy.
Common pairings
strenuous exercise
strenuous effort
strenuous activity
Word Forms
more strenuous comparative, most strenuous superlative
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Etymology
From Latin strenuus, meaning vigorous or quick.