Bigwheel is a term used to describe an important or influential person. However, there are different synonyms that can be used interchangeably with this word. Some of the common synonyms for bigwheel are big shot, high flyer, top dog, boss, leader, mogul, heavyweight, and influential. These words can be used to describe individuals who hold significant positions in their industries and organizations. A big shot or high flyer is someone in a position of power or influence who is successful and well-respected. Meanwhile, top dog, boss, and leader all describe someone who is in charge or has a high level of authority. Mogul and heavyweight, on the other hand, are terms typically used in business to describe individuals who are dominant and influential in their field.