To make a loud rattling noise or to rattle excessively.
Formed from the prefix 'be-' combined with 'rattle,' following Middle English patterns of intensification. The '-le' ending suggests repeated or continuous action, common in Germanic word formation.
This is a rare word that shows how English once had many more 'be-' verbs for making sounds intensely—most have disappeared, but 'berattle' and similar forms reveal how creative medieval English speakers were at building vivid action words.
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