Main Entry:

mut·ter

Pronunciation:

\ˈmə-tər\

Function:

verb

Etymology:

Middle English muteren, of imitative origin

Date:

14th century

intransitive verb 1 : to utter sounds or words indistinctly or with a low voice and with the lips partly closed 2 : to murmur complainingly or angrily : grumble transitive verb : to utter especially in a low or imperfectly articulated manner

— mutter noun

— mut·ter·er \-tər-ər\ noun