What is the Latin word for mutter?

The usual Latin words for “mutter” are muttiō, hīscō, mussitō. The right choice depends on the sense; see the distinctions below.

English → Latin

“mutter” in Latin

muttiōto mutter or murmur hīscōto yawn, gape, open; to open the mouth, mutter, murmur; to speak, utter mussitōto keep quiet; to mutter, murmur

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

mutter

muttire (whence mussare and mussitare; i. e., to speak softly and gently, in broken words, not = to mutter; Vid: Ruhnken, Ter., Andr., 3, 2, 25): hiscere (to open the mouth in order to speak). Vid: also, MERMER.

Quick answer

What is the Latin word for mutter?: The usual Latin words for “mutter” are muttiō, hīscō, mussitō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.