The term "backstops" refers to a barrier or device which prevents objects from moving beyond a specific boundary. Antonyms for backstops may include words like "allow," "permit," "advance," or "progress," which all indicate movement or forward momentum. Other antonyms for backstops might include "release," "unrestrained," "free," and "unrestricted," which suggest a lack of boundaries or limitations. While backstops are often used in sports to prevent balls from leaving the playing field, antonyms for this term could be applied in a variety of contexts, from business to personal relationships, where limits or boundaries may not be ideal or desirable.