Free agency refers to a system of professional sports where players are free to sign with any team they prefer after their contract with their current team expires. Other synonyms for free agency include unrestricted free agency, open free agency, and independent free agency. Unrestricted free agency, as the name suggests, indicates that players are not restricted by any rules in their decision to switch teams. Open free agency is another common synonym that highlights the availability of players to join any team they choose. Finally, independent free agency symbolizes the players' ability to act independently and choose their destination based on their preferences and conditions.