/ Dictionary / Index S strenuous: Meaning and Definition of Find definitions for: stren•u•ous Pronunciation: (stren'y-us), [key] — adj. 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: strenuous (Thesaurus) strengthless strep Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language