When we talk about ex-teammates, it usually refers to someone who was once a part of our team but is not anymore. However, there are several other words that can be used as synonyms for ex-teammate. For example, you can use the term former teammate, colleague, partner or comrade. Other words could include ex-partner, previous associate or former companion. Regardless of which term you use, they all relate to someone who was once a part of our team, and who we worked closely with to achieve a specific goal. Using synonyms helps us to express our thoughts and communicate ideas more effectively.