A person or animal that gaggles, or something that makes gaggling sounds; one who participates in a gaggle or disorderly group.
From 'gaggle' plus the agent suffix '-er.' The root 'gaggle' derives from onomatopoeia for goose calls combined with Germanic word roots, creating a vivid term for noisy, chaotic behavior.
A 'gaggler' is what you might call someone in a loud, gossipy group—the word preserves the image of geese being loud and argumentative, making it perfect for describing human social behavior in modern English!
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