mumble

[ US /ˈməmbəɫ/ ]
[ UK /mˈʌmbə‍l/ ]

VERB

grind with the gums; chew without teeth and with great difficulty
the old man had no teeth left and mumbled his food
talk indistinctly; usually in a low voice

NOUN

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How To Use mumble In A Sentence

They mumbled quietly to each other for the rest of the journey.
She climbed aboard the Mumbles train and huddled in a seat in the warmth of the lower deck.
Stuart Braithwaite mumbled into the mike for another newie, Secret Pint.
She mumbled an apology and left.
The driver mumbled a non-committal reply.
Slumping forward onto the gigantic gadget, he mumbled, Good luck finding enough ice for hockey on this dustball. Reap the Whirlwind
Aimee mumbled to herself about getting a lock for her door and pulled the comforter to her bed, cuddling up under it so that she could get back to sleep.
His speech is a mumble, his face immobile, his gait unsteady.
Will there be a lot of ash in the atmosphere down on Rakatan, Doctor—" She paused, trying to remember the name he'd mumbled upon his appearance. Firestorm
Which is why he mumbled something unintelligible instead. The Sun