strenuous
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(satellite adjective) characterized by or performed with much energy or force; "strenuous exercise" |
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| 2. |
(satellite adjective) taxing to the utmost; testing powers of endurance; "his final, straining burst of speed"; "a strenuous task"; "your willingness after these six arduous days to remain here"- F.D.Roosevelt |
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Synonyms: arduous, straining |
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