Third-person singular present tense of bemurmur; murmurs or speaks softly about.
From 'bemurmur' with the standard third-person singular '-s' suffix used in English verb conjugation.
Like all these archaic verbs, 'bemurmurs' is purely grammatical—it shows what these words would have looked like when used in sentences, reminding us that archaic words had full, regular conjugations.
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