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strenuous

English

  1. 🔊 characterized by or performed with much energy or force
    “strenuous exercise”
  2. 🔊 taxing to the utmost
    “his final, straining burst of speed”

Spanish

  1. 🔊 extenuante strenuous
  2. 🔊 ímprobo strenuous

Similar words

arduous straining herculean active arduous breathless burdensome demanding determined difficult dogged dynamic eager earnest effortful energetic enthusiastic exhausting hard indefatigable intense laborious lusty mean