Major league is a popular term used to describe a professional sports league or organization with the highest level of competition. However, there are several synonyms to describe this term, including premier league, top-tier league, elite league or highest level league. These terms are often used interchangeably to describe the most competitive leagues in different sports, such as the NFL, NBA or MLB. While the phrase "major league" is particularly associated with baseball, these synonyms can be applied to any sport that has a top-tier level of competition. The bottom line is that major league and its synonyms represent the most elite level of professional sports, where only the best of the best compete.