The phrase "be ever present" suggests being constant and always available. Its antonyms would be words that connote absence or inconsistency. Some antonyms for this phrase include, but are not limited to, "disappear," "vanish," "ephemeral," "infrequent," or "intermittent." These antonyms describe a state of being that is very different from being ever present. To disappear or vanish implies a complete absence, while ephemeral suggests something that is fleeting or brief. Similarly, infrequent and intermittent imply a lack of constancy or reliability. Overall, these antonyms provide a range of options for describing the opposite of being ever present.