Well might I dread, well might I dislike Mrs. Reed; for it was her nature to wound me cruelly; never was I happy in her presence; however carefully I obeyed, however strenuously I strove to please her, my efforts were still repulsed and repaid by such sentences as the above.
There are no more uses of "strenuous" in the book.
Show samples from other sources
The doctor recommended strenuous exercise three times a week.
Landscaping is strenuous work in the Texas summer.