Main Entry: stren·u·ous

Pronunciation: \ˈstren-yə-wəs\

Function: adjective

Etymology: Latin strenuus

Date: 1599

1 a : vigorously active : energetic b : fervent, zealous <the proposal's most strenuous supporters>
2 : marked by or calling for energy or stamina : arduous <a strenuous hike>

synonyms see vigorous

— stren·u·os·i·ty \ˌstren-yə-ˈwä-sə-tē\ noun

— stren·u·ous·ly \ˈstren-yə-wəs-lē\ adverb

— stren·u·ous·ness noun