Antonyms for the phrase "brings in to open" could include "keeps closed," "shuts out," or "conceals." In contrast to "bringing in to open," these words suggest a sense of containment, restriction, or secrecy. Keeping something closed or shut out can be a form of protection or privacy, while concealing something altogether can be a way of avoiding scrutiny or judgment. However, there may also be a sense of missed opportunities or potential risks associated with these antonyms, as keeping things closed can prevent growth, innovation, or collaboration. Ultimately, the choice between "bringing in to open" or keeping things closed may depend on the specific context and goals involved.