Garrulous (adjective)

1. Excessively talkative, especially on trivial matters.
2. Inclined to talk a lot, especially about trivial matters.

Origin:

Late 16th century: from latin garrulus "talkative", from garrire "to chatter".

Examples:

1. The garrulous old man would not stop talking.
2. She found the garrulous salesman's endless chatter to be very annoying.
3. Garrulous people tend to talk a lot without saying anything of importance.
4. The garrulous person at the party was always talking but never listening.
5. Garrulous behavior can be a sign of nervousness or insecurity.