grutter

1. verb - to grumble and mutter simultaneously.

2. verb - to incomprehensibly express displeasure vocally.
"Dang kids and their stupid cell phones", the unhappy codger gruttered.

The vocal expression which is gruttered is called a "grutterance".
by G-Force April 19, 2006
mugGet the gruttermug.

Grutter Paw

A child that has the personality of a gremlin or little hands that could be the hands of a gremlin.
June is a total grutter paw! Don't be such a Grutter Paw!
by RedRumandLadyBug July 29, 2019
mugGet the Grutter Pawmug.