The term "separate returns" refers to a legal and financial term that pertains to the individual tax return of a legally married couple. There are several synonyms that may be used in place of "separate returns." This includes "individual tax returns," "solo tax filings," or "separate tax reports." These terms all refer to the same concept of individual tax filings, which are separate from those of a partner or spouse. It is important to understand the differences between joint and separate returns, as the filing method can have a significant impact on tax liability and overall financial standing for married couples.