One who is eager or keen; a person characterized by intense desire or enthusiasm for something.
From Middle English 'eger,' from Old English and Germanic roots related to 'eager' (sharp, keen, keen for action). The '-er' suffix marks someone who possesses the quality of eagerness.
Medieval people used 'aeger' as a noun for an eager person the same way we might say 'go-getter' today—it captures the idea that eagerness is so much part of someone's character it defines who they are.
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