This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Low indistinct words or utterance; mumbling speech.

"Had they but known it, it might all have been seen, holy of holies, head-wagging priest, idle yawning assistant, with legs stretched out, half asleep, mumblement, jumblement and all, from a little back window in a passage opening from that Calvary gallery upstairs."