strenuous
UK: ˈstren.ju.əs | US: ˈstren.ju.əs
adj. requiring or showing great effort or energy
adj. vigorously active or energetic
The word "strenuous" originates from the Latin strenuus, meaning "active, vigorous." The morpheme stren reflects this sense of energetic effort, while -uous is an adjective-forming suffix derived from Latin -uus, indicating a quality or state. Over time, the term evolved in English to describe tasks or actions demanding significant physical or mental exertion, retaining its core association with vigor and intensity.
Climbing the mountain was a strenuous challenge for the hikers.
She maintained a strenuous workout routine to prepare for the marathon.
The debate required strenuous mental effort from both participants.
After a strenuous day at work, he felt completely exhausted.
The project demanded strenuous attention to detail and long hours.