Ironically, it means talkative. I remember as a young lady being called this by my teacher. I didn't know what it meant, so I laughed. She laughed too. She continued to call me this every time I talked in class when I wasn't suppose to be talking. I eventually got the picture. I learned valuable lessons about words from that experience. Can you guess what they are?
It has a contrasting meaning from my perspective. It means shallow/superficial, but it also means fluent and persuasive. The hard part is being certain how it is being used. I don't like this word. LOL!