Cut one in is a slang term that is typically used to describe someone interrupting a conversation or inserting their opinion into a discussion without being invited to do so. Antonyms for this phrase would include "stay quiet," "listen," "wait for your turn," or "observe without interruption." Using these alternatives could help facilitate productive and respectful communication, which is key to finding mutual understanding on important topics. Next time you feel the urge to cut one in, take a moment to pause and consider whether your input is wanted or necessary at that time.