I.
noun
ADJECTIVE
▪ constant , endless , incessant
▪
Her constant ~ was starting to annoy me.
▪ excited , loud , nervous , noisy
▪ idle
▪
I wish you'd stop wasting time in idle ~.
▪ inane , mindless
▪ background
▪ Internet , radio
▪
Enemy radio ~ indicated the plane was carrying weapons.
PREPOSITION
▪ ~ about
▪
She was full of ~ about her new friends.
II.
verb
ADVERB
▪ excitedly , happily , loudly
▪ endlessly , incessantly
▪ away , on
▪
He ~ed on happily for about half an hour.
PREPOSITION
▪ about
▪
We ~ed about work.
▪ to
▪
He ~ed excitedly to his friends.
Chatter is used with these nouns as the subject: ↑ monkey , ↑ tooth