MYOB is an acronym for "Mind Your Own Business", a phrase typically used to tell someone to stay out of someone else's affairs. There are several synonyms for MYOB that can be used to politely advise someone to stop interfering in someone else's issues. Some common synonyms include "stay in your lane", "mind your own beeswax", "keep to yourself", "don't meddle", and "stay out of it". These phrases convey a message of respect for privacy and boundaries, and they can be useful in a variety of situations where people may be tempted to pry into matters that are not their concern.