General Terms:
* Rambling: This describes someone who talks at length without much focus or coherence.
* Gushing: This refers to speaking excitedly and excessively, often without much thought.
* Chattering: This suggests talking rapidly and incessantly, often about trivial matters.
* Blabbering: This implies talking foolishly and revealing secrets or information that shouldn't be shared.
* Prating: This word suggests speaking pompously and foolishly.
* Gabbing: This is a more informal word for talking a lot, usually in a casual way.
More Negative Terms:
* Babbling: This describes talking in a nonsensical way, like a baby.
* Ranting: This implies speaking angrily and irrationally.
* Raving: This describes talking wildly and incoherently, often due to madness or excitement.
Informal Terms:
* Shooting your mouth off: This means talking without thinking, often saying something you shouldn't.
* Running off at the mouth: This implies talking excessively and without control.
The best word to use will depend on the specific context and the tone you want to convey.