D defs.my
Entry 1 sense Webster, 1913

Strenuous

/strĕn'-yo͞o-əs/ · Stren·u·ous · IPA /ˈstɹɛ.nju.əs/
01 a. Eagerly pressing or urgent; zealous; ardent; earnest; bold; valiant; intrepid; as, a strenuous advocate for national rights; a strenuous re…
  1. 1.
    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.
    “And spirit-stirring wine, that strenuous makes.” Chapman.
    Strenuous, continuous labor is pain.” I. Taylor.