Assiduous Definition
Hard-working, diligent or regular (in attendance or work); industrious.
Origin of Assiduous
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From Latin assiduus from assidēre to attend to ad- ad- sedēre to sit sed- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
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From Latin assiduus, from assidere (“to sit down to”), from ad- (“to”) + sedere (“to sit”).
From Wiktionary
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Cognate (via assidere) to assess.
From Wiktionary
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