strenuous

2 definitions • 4 examples

needing or using a lot of physical or mental effort or energy:

He rarely does anything more strenuous than changing the channels on the television.

His doctor advised him not to do any strenuous exercise.

Strenuous efforts were made throughout the war to disguise the scale of civilian casualties.

needing or using a lot of effort or energy:

I think football is much more strenuous than baseball.