He couldn't stand their endless 'chatter' [='prattle'] about celebrities and movies.
He was 'chattering' [='jabbering'] away on a cell phone.
Children 'chattered' in the middle of the playground.
(..) Now, get this, gentlemen, The D, E, A, is going to back us up this time, This is going to be our prize, The assignment? Baker and the Rough Riders, (excited chatter) All right, everybody, Listen up, I want you all to report to me individually for your work assignments, Now let's hit some home runs (..)1994 The Glass Shield