French-English translations for bredouiller

mumble
us
Please try not to mumble so I can hear you better.All I could hear was a mumble from the next roomHe spoke in a barely comprehensible mumble
mutter
us
The prisoners were docile, and accepted their lot with barely a mutter.You could hear the students mutter as they were served sodden spaghetti, yet again, in the cafeteria.The beggar muttered words of thanks, as passersby dropped coins in his cup.

stammerHe blushed, and stammered a few words of apology.
stutterHe stuttered a few words of thanks.The engine of the old car stuttered going up the slope. I was stuttering after the marathon