Question

why has the word chatter been repeated in the poem class 9 Chapter 6

Answer 1

because the brook are making eco sound because she is happy because she finally join the brimming river

Answer 2

Hi friend
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Your answer
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I think your are referring to the poem ,"The Brook" , written by Alfred Lord Tennyson.

Now,
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How does the Brook chatter?

Answer => As the Brook is following continuously over the stony paths , it plunges over the rocks and pebbles , it makes kind of chattering sound . The poet has used a poetic device called "Personification" here to give life to the appearance of the Brook.

HOPE IT HELPS