The young boy muttered angrily to himself when the teacher told him he had to stay after school.
She's a crazy old lady that mutters to herself and screams at shadows.
The old man was muttering to himself as he looked through his drawers for a pair of socks.
The
mutterings of scandal in the press are being dismissed by the government as hearsay.
The students were muttering to themselves, reviewing the vocabulary in their heads one last time before the test.
I wish you would stop muttering. If you have something to say, just say it.
He
muttered something under his breath and walked out of the room.
The students were muttering something about having too much homework as they left the classroom.
The young boy muttered an apology to his teacher and left the room.
The old man muttered something under his
breath as his wife stomped angrily out of the room.
There is muttering in the street about the need for a change of government.
One student was muttering to himself all through the test, and it was distracting some of the others.
Don't mutter; your mother is hard of hearing, so you have to speak up.
Muttering to yourself won't solve anything. Tell me clearly what is bothering you.
There have been mutterings of a strike as a result of the break down in negotiations with management.