chitter-chatter

Etymology
From a reduplication of. Compare from ;  from ; etc.

Noun

 * 1) Light and lively discussion.
 * 2) Talk about trivial or nonsensical matters; inconsequential or incessant conversation.
 * 3)  The chattering of teeth due to trembling, shivering, etc.

Verb

 * 1) To talk trivially, nonsensically, or incessantly.