verb Etymology: Middle English muteren, of imitative origin Date: 14th century intransitive verb to utter sounds or words indistinctly or with a low voice and with the lips partly closed, to murmur complainingly or angrily ; grumble , transitive verb to utter especially in a low or imperfectly articulated manner, ~ noun ~er noun
MUTTER
Meaning of MUTTER in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012