strenuous
Cross references: 1. vigorous stren.u.ous \'stren-y*-w*s\ aj [L strenuus - more at STARE] 1a: vigorously active : ENERGETIC 1b: FERVENT, ZEALOUS 2: marked by or calling for energy or stamina : ARDUOUS - stren.u.ous.ly av
Cross references: 1. vigorous stren.u.ous \'stren-y*-w*s\ aj [L strenuus - more at STARE] 1a: vigorously active : ENERGETIC 1b: FERVENT, ZEALOUS 2: marked by or calling for energy or stamina : ARDUOUS - stren.u.ous.ly av