To murmur together; to whisper or speak softly in company with another person or group.
From the prefix co- meaning 'together' plus murmurer, from Latin murmurare meaning 'to murmur or hum.' This is a rare or obsolete English construction combining the collaborative prefix with an onomatopoetic root.
This delightfully archaic verb captures the specific sound of a group whispering together—it's the kind of word that medieval monks might have used when describing prayers whispered in unison in monastery cells.
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