To fill or cover with the mouth; to speak about extensively or boastfully.
Combining the prefix 'be-' with 'mouth', this archaic verb likely emerged in Middle English when the 'be-' prefix was commonly used to create new verbs meaning to supply or furnish with something.
This word is so obscure that it barely appears in historical texts, but it represents a fascinating lost pattern in English—we used to casually create verbs like 'bemouth', 'beeye', or 'behand' to mean 'supply with' or 'use excessively', a productivity we've mostly abandoned.
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