| Strenuous (a.) Eagerly pressing or urgent; zealous; ardent; earnest; bold; valiant; intrepid; as, a strenuous advocate for national rights; a strenuous reformer; a strenuous defender of his country. Thesaurus Entries Herculean, active, arduous, breathless, burdensome, demanding, determined, difficult, dogged, dynamic, eager, earnest, effortful, energetic, enthusiastic, exhausting, hard, indefatigable, intense, laborious, lusty, mean, operose, persistent, pertinacious, red-blooded, resolute, sincere, taxing, tenacious, tireless, tiring, toilsome, tough, uphill, vigorous, vital, wicked, zealous |