- characterized by vigorous exertion, as action, efforts, life, etc.: a strenuous afternoon of hunting.
- demanding or requiring vigorous exertion; laborious: To think deeply is a strenuous task.
- vigorous, energetic, or zealously active: a strenuous person; a strenuous intellect.
- requiring or involving the use of great energy or effort
- characterized by great activity, effort, or endeavour
