Neutral:
* Gossip: This is a general term for casual conversation about other people, often involving rumors or personal details.
* Backbiting: This implies speaking negatively or critically about someone behind their back.
* Slander: This is a more serious term, referring to false and defamatory statements made about someone.
Negative:
* Whispering: This suggests that the conversation is secretive and possibly malicious.
* Talking trash: This is a more informal and slangy term for negative or derogatory comments.
* Badmouthing: This implies that the conversation is intended to damage someone's reputation.
Other:
* Disseminating rumors: This focuses on the spread of information, often without any verification.
* Engaging in character assassination: This is a serious accusation, suggesting that the conversation is intended to ruin someone's reputation.
The best word to use depends on the specific situation and the intended meaning.