mussitate
To say (words, etc.) indistinctly; to mutter.
transitive
As for the Origination of the name Magus, […] others [derive it] from מהגה, one that muſſitates; becauſe the Magi tranſacted al their Incantations by muſſitating or muttering out their vvords.
To talk indistinctly; to mutter.
intransitive
Let none dare to think as vve hear ſome one or tvvo begins to muſſitate, that the Magiſtrates miſcarriages about the matters of Religion, does forfault him of his right to govern, and ſo cadens titulo, is no more to be ovvned as King.
Where it comes from
From Latin mussitō (“to keep quiet; to murmur, mutter”) + -ate (verb-forming suffix), from mussō (“to be silent and respectful; to say in a soft voice, murmur”) (perhaps from Proto-Indo-European *mur- (“to murmur”), originally imitative) + -itō (frequentative suffix).
Adapted from the Wiktionary entry mussitate (CC BY-SA 4.0).