"Come again" is a common phrase used in casual conversations and interactions, indicating a desire for someone to repeat something that was said or done. Synonyms for this phrase include "repeat", "say again", "recap" and "reiterate". Other similar phrases that can be used in place of "come again" include "what was that again?", "could you repeat that please?", "can you say that again?", and "pardon me?". These phrases are often used in situations where one may not have heard or understood something correctly, and wishes to clarify or confirm what was said.