Question

How can you rearrange ratchet to give another word of "to talk quickly in a foolish way?

Answer 1

I would say that the word you are looking for is chatter.
It is made up of the same words included in the word ratchet, and it means 'to talk quickly in a foolish way.'

Answer 2

chatter

Chatter means "to talk quickly in a foolish way". Often chatter can be considered an onomatopoeia because it has the same sound as it's meaning. Since a person's chattering is usually deemed as not worth paying attention to, the simple sound of the word can represent its meaning. People sometimes use the word chatter to describe a bunch of birds chirping back and forth in the trees nonstop and creating a lot of noise.