Ballin' is a slang term commonly used to describe someone who is living extravagantly, or experiencing excessive financial success. The phrase is often associated with hip-hop music and culture. Synonyms for ballin' might include phrases such as "living like royalty," "rolling in the dough," or "living large." Other popular terms that convey a similar meaning include "getting money," "living the dream," or "making it big." These expressions are often used to describe individuals who are seen as successful and wealthy, and can be used both positively and negatively based on the context and the attitudes of the speaker.