
1) Burble 2) Complain in a murmur 3) Grumble 4) Hamburger mum made from beef 5) Mumble 6) Murmur 7) Murmur in discontent 8) Murmur indistinctly 9) Murmuration 10) Murmuring 11) Mussitation 12) Muttering 13) Not say clearly 14) Peas 15) Say inaudibly 16) Sound 17) Speak indistinctly 18) Speak softly
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https://www.crosswordclues.com/clue/mutter

1) Grumble 2) Lamentation 3) Mumble 4) Murmur 5) Murmuration 6) Mussitate 7) Mussitation
Found on
https://www.crosswordclues.com/clue/mutter
[software] Mutter is a window manager for the X Window System, and is in the process of becoming a Wayland compositor; it became the default window manager in GNOME 3, replacing Metacity. While Metacity uses GTK+ for rendering, Mutter uses a graphics library called Clutter, and also supports OpenGL through Clutter. The Mutter window manager...
Found on
http://en.wikipedia.org/wiki/Mutter_(software)

• (v. i.) To utter words indistinctly or with a low voice and lips partly closed; esp., to utter indistinct complaints or angry expressions; to grumble; to growl. • (n.) Repressed or obscure utterance. • (v. i.) To sound with a low, rumbling noise. • (v. t.) To utter with imperfect articulations, or with a low voice; as, to mutt...
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http://thinkexist.com/dictionary/meaning/mutter/

Peas
Found on
http://www.cuisinecuisine.com/Glossary.htm

(Indian) Peas
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http://www.cuisinecuisine.com/Glossary.htm
Mut'ter intransitive verb [
imperfect & past participle Muttered ;
present participle & verbal noun Muttering .] [ Prob. of imitative origin; confer Latin
muttire ,
mutire .]
1. To utter words indistinctly or with a...
Found on
http://www.encyclo.co.uk/webster/M/121
Mut'ter transitive verb To utter with imperfect articulations, or with a low voice; as, to
mutter threats.
Shak. Found on
http://www.encyclo.co.uk/webster/M/121
Mut'ter noun Repressed or obscure utterance.
Found on
http://www.encyclo.co.uk/webster/M/122

[
n] - a low continuous indistinct sound
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http://www.webdictionary.co.uk/definition.php?query=mutter
grumble verb make complaining remarks or noises under one`s breath; `she grumbles when she feels overworked`
Found on
https://www.encyclo.co.uk/local/20974
muttering noun a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech
Found on
https://www.encyclo.co.uk/local/20974

to utter words indistinctly or in a low tone, often as if talking to oneself; murmur. · to complain murmuringly; grumble. · to make a low, rumbling sound.
Found on
https://www.infoplease.com/dictionary/mutter
No exact match found.