The word "inter-faced" means to interact or communicate with someone or something, usually through technology or other means. Some common antonyms for "inter-faced" could include words like "ignored," "avoided," "disconnected," "separated," or "isolated." These words suggest a lack of interaction, communication or contact between persons or things. For example, avoiding someone means staying away from them or not talking to them, while disconnecting or isolating oneself suggests purposely breaking communication or social ties. These antonyms may be useful when discussing situations where technology or communication tools fail or are not available, or when there's a desire to emphasize the lack of connection or interaction between two people or things.