* Gossip: "She's always talking about other people behind their backs."
* Blabbermouth: "He's a real talker, but you can't trust him to keep a secret."
* Empty words: "He talks a big game, but he never follows through."
* Argue/Dispute: "They were talking so loud, I thought they were going to fight."
* Interrogation: "The police talked to the suspect for hours." (can imply pressure or coercion)
* Insincere: "He talked a good game, but I didn't believe him."
It's important to note that the connotation of "talk" can depend heavily on context.