There are many synonyms for the phrase "is gone." Some of the most common ones include "has vanished," "disappeared," "has left," "is absent," "has departed," "has gone away," and "is no longer here." Other synonyms for the phrase include "is lost," "has fallen off the radar," "is out of sight," "has been whisked away," and "has been taken." Depending on the context of the situation, choosing the right synonym can help to better convey the feeling behind the phrase. Whether something or someone is missing or has simply moved on, there are plenty of ways to express the idea that "it is gone".