(~s, prattling, ~d)
If you say that someone ~s on about something, you are criticizing them because they are talking a great deal without saying anything important. (INFORMAL)
Lou ~d on about various trivialities till I wanted to scream...
She ~d on as she drove out to the Highway...
Archie, shut up. You’re prattling.
= witter
VERB: V on/away about n, V on/away , V disapproval
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Prattle is also a noun.
What a bore it was to listen to the woman’s ~!
N-UNCOUNT