Full of deeds or actions; characterized by doing notable or significant acts; willing or capable of taking action.
From Old English 'dǽd' (deed/action) plus the adjective suffix '-full' (full of). This formation follows the pattern of words like 'eventful,' 'harmful,' or 'peaceful,' dating back to Middle English.
Archaic literature often praises heroes as 'deedful'—it means they're action-oriented doers rather than talkers; you'll find this in medieval and Renaissance writings describing brave knights and adventurers.
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