The words "coming be" are not typically used in the English language. However, if we consider the word "coming" and the verb "to be" separately, we can look at their antonyms. The antonyms for "coming" can include going, leaving, departing, or exiting, depending on the context. The antonyms for "to be" can include not existing, non-existent, absent, or non-existent. So we can say that the antonyms for the phrase "coming be" might include departing non-existence, leaving absence, or exiting non-existence. Though these combinations may seem unusual, they demonstrate how different language parts can be broken down to their meanings and antonyms.