What is it called when two people are speaking as if someone was not there?

There are a few terms that describe when two people speak as if someone was not there, depending on the context and the intention:

1. Excluding: This is the most straightforward term, implying that the speaker intentionally leaves someone out of the conversation.

2. Sidelining: Similar to excluding, but it suggests that the speaker is deliberately putting someone on the sidelines of the conversation.

3. Conspiring: If the conversation is secretive or involves plotting, this term implies that the two people are talking as if someone was not there to hear them.

4. Gossiping: When the topic of conversation is about someone who is not present, it is often considered gossiping, which can be seen as disrespectful.

5. Ignoring: This term suggests that the two people are deliberately not acknowledging the presence of someone else.

6. Speaking over someone's head: If the conversation is about a topic that the absent person wouldn't understand, this term can describe the situation.

7. Talking behind someone's back: This is a common phrase used to describe speaking negatively about someone who is not present.

The specific term used will depend on the specific situation and the intent of the speakers.