Showing great care, attention, and persistent effort; diligent and dedicated in application to a task. Characterized by constant, attentive work.
From Latin 'assiduus' meaning 'sitting close to' or 'constantly present,' from 'ad-' (to) + 'sedere' (to sit). Originally described someone who sits by attentively, like a devoted student or worker.
Think 'ASS-IN-DESK-UOUS' - someone so dedicated they keep their behind in the desk chair working constantly! The root 'sed-' (sit) appears in 'sedentary' - assiduous people sit and work persistently.
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