Necessitating vigor or energy; accompanied by labor or exertion.
Synonyms and Energetic, resolute.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. taxing to the utmost; testing powers of endurance
adj. characterized by or performed with much energy or force
Word Usage
"Members of the VIP protection unit in Gauteng have threatened to down tools over what they describe as strenuous working conditions and ill-treatment."