The phrase "dealing one in" refers to the act of including or involving someone in a particular situation, conversation or activity. Some possible antonyms for this phrase could be "excluding", "omitting", "ignoring" or "avoiding". These words imply a deliberate decision to keep someone or something out of the equation. In contrast, "dealing one in" suggests a willingness or desire to include others and share experiences. By using different antonyms for this phrase, we can emphasize the importance of either including or excluding individuals depending on the context and the goals of the situation.