The term "round robins" generally refers to a circular activity or event where each participant takes turns doing something. Antonyms for the term could include words such as "individual," "solo," or "isolated," which imply actions or events that are done independently or separately from others. Other antonyms might include words like "one-sided," "biased," or "exclusive," which imply a lack of fairness or inclusivity in an activity. Additionally, terms like "decisive," "conclusive," or "final" could imply that a decision has been made, as opposed to the open-ended nature of a round robin activity.