My teeth were chattering after just a few minutes in the
freezer.
The chattering noise came from over there.
The poor chipmunk was chattering in fear after we caught it.
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A chattering bird with six letters
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Yes chattering can be classed as onomatopeia because
omomatopoeia is a word that sounds like its description. for
example "Snap" "Crackle" "pop" and yes "chattering" because as you
say the word it sounds like a group of people chattering away
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The birds were chattering loudly in the trees outside my window.