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1. (of a person) To talk idly or incessantly. Now that she can talk, my little girl will just chatter away all day long. Well, he's still chattering away, but I stopped listening a while ago.
2. (of an animal) To make a series of noises. The chipmunk started chattering away as I got closer to it.
chatter about (someone or something)
To talk idly, incessantly, or excitedly about someone or something. Why are all of these people suddenly chattering about me? Well, he's still chattering about how wonderful this program is, but I stopped listening a while ago.
chatter from (something)
Of teeth, to touch together noisily, usually because one's whole body is shivering in the cold. My teeth were chattering from what seemed like Arctic winds.
the chattering classes
Educated individuals known for frequently discussing and commenting on current events, such as politics, perhaps in the media. The term is often derogatory. Primarily heard in UK, Australia. I wouldn't know what the chattering classes are on about—I pay no attention to all the talking heads.
chatter about someone or something
to talk idly and actively about someone or something. All the guests were chattering about something or other. People are chattering about you and Claire. Do you want to know what they are saying?
chatter (away)(at someone or something)
1. Lit. to talk incessantly or noisily to or at someone or something. The parrot was chattering away at its reflection in the mirror. The kids were chattering away, Stop chattering at me!
2. Fig. [for a small animal, such as a squirrel] to try to scare off someone or something. The little squirrel chattered away at the crow. The crow came close and the squirrel chattered away again.
chatter from something
[for one's teeth] to shake noisily with a chill from the cold, the dampness, a fever, etc. My teeth were chattering from the extreme cold. It was a terrible illness. My teeth chattered from the chills that followed the fever.