loquacious, garrulous, verbose, effusive
it would have 2 t in it
Chatter
fast
rapid quickly :) Fast
Rapid location.
clinic
Another word for talking quietly is whispering.
rapid
Discussing.
Another word for talking fast is yapping, I really dont even know if It`s a word but it's just what came into my head :L x
Another word for signs is probably going to be symbols but it depends on what you're talking about
Running at the mouth