<p><strong>adjective</strong></p><ul><li>characterized by vigorous exertion, as action, efforts, life, etc.: a strenuous afternoon of hunting</li><li>demanding or requiring vigorous exertion; laborious: To think deeply is a strenuous task</li><li>Antonyms: easy</li><li>vigorous, energetic, or zealously active: a strenuous person; a strenuous intellect</li><li>Synonyms: forceful</li></ul>