
1) Act like Marlon 2) Chew words 3) Grind with the gums 4) Maunder 5) Mouth 6) Mussitate 7) Mutter 8) Say your lines a la Brando 9) Speak 10) Speak indecipherably 11) Speak indistinctly 12) Speak unclearly 13) Talk 14) Talk indistinctly 15) To fail to articulate 16) Utter 17) Verbalise 18) Verbalize
Found on
https://www.crosswordclues.com/clue/mumble

1) Murmur 2) Mussitate 3) Mutter 4) Slur 5) Sound
Found on
https://www.crosswordclues.com/clue/mumble
[software] Mumble is a voice over IP (VoIP) application primarily designed for use by gamers, similar to programs such as TeamSpeak and Ventrilo. Mumble uses a client–server architecture which allows users to talk to each other via the same server. It has a very simple administrative interface and features high sound quality and low laten...
Found on
http://en.wikipedia.org/wiki/Mumble_(software)

• (v. t.) To suppress, or utter imperfectly. • (v. t.) To chew or bite gently, as one without teeth. • (v.) To chew something gently with closed lips. • (v. t.) To utter with a low, inarticulate voice. • (v.) To speak with the lips partly closed, so as to render the sounds inarticulate and imperfect; to utter words in a gru...
Found on
http://thinkexist.com/dictionary/meaning/mumble/
Mum'ble (mŭm'b'l)
transitive verb 1. To utter with a low, inarticulate voice.
Bp. Hall. 2. To chew or bite gently, as one without teeth. « Gums unarmed, to
mumble meat in vain.»
Dryden. 3. To suppress, or utter imperfectly.
Found on
http://www.encyclo.co.uk/webster/M/115

Mum'ble transitive verb [ imperfect & past participle Mumbled ; present participle & verbal noun Mumbling .] [ Middle English momelen ; confer Dutch mompelen , mommelen , German mummelen , Swedish mumla
Found on
http://www.encyclo.co.uk/webster/M/115

[
v] - grind with the gums 2. [v] - talk indistinctly
Found on
http://www.webdictionary.co.uk/definition.php?query=mumble
noun a soft indistinct utterance
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.