(~s, ~ing, ~ed)
If you ~, you speak very quietly so that you cannot easily be heard, often because you are complaining about something.
‘God knows what’s happening in that madman’s mind,’ she ~ed...
She can hear the old woman ~ing about consideration...
He sat there shaking his head, ~ing to himself...
She was staring into the fire ~ing.
VERB: V with quote, V about n, V to n, V
•
Mutter is also a noun.
They make no more than a ~ of protest.
N-COUNT
~ing (~ings)
He heard ~ing from the front of the crowd...
N-VAR