Voluble is an adjective that means speaking rapidly or readily.

Volvere (vole VAR ay) is the Latin word for ‘roll’ or ‘revolve.’ The meaning of this root word evolved over time into a number of English words like ‘revolver’ and ‘revolution.’ It has also evolved and revolved into our word of the day, which is generally used to describe someone whose speech rolls along fluidly and quickly.

For example: That salesman’s patter was so voluble he persuaded me into buying a number of things I didn’t really need. But that’s what happens when dealing with a fast and smooth talker.