It implies someone who talks a lot, often without much substance to their conversation.
Here are some synonyms for garulous:
* Talkative
* Chatty
* Loquacious
* Voluble
* Glib
* Rambling
* Prolix
Here are some examples of how "garulous" can be used in a sentence:
* "The garulous old man regaled us with stories of his youth, many of which were quite unbelievable."
* "She was a bit too garulous at the party, interrupting everyone's conversations."
* "The garulous bartender kept us entertained with his witty anecdotes."