The term "inter faces" refers to the ways in which different elements of a system or program connect and interact with each other. Antonyms for "inter faces" might include "disconnection" or "separation," referring to situations in which two components are isolated from one another and unable to communicate effectively. Another possible antonym is "unaligned," indicating a lack of consistency or compatibility between different components within a system. Other antonyms might include "noninteracting," "dissociated," or "disengaged," all of which suggest a lack of collaborative interaction between different parts of a system.