Definitions:

1. Implies a conversation that is ongoing, often without a clear purpose or point, and may be considered annoying or tiresome by others. NOUN
   • We couldn't get any work done with all the yakety-yak going on in the next room.
2. Informal expression to describe noisy, incessant, or trivial conversation or chatter. NOUN
   • The kids were yakety-yakking away in the back seat, making it hard for their parents to concentrate on driving.

Synonyms:

• Cackle
• chatter
• jabber
• prattle