The phrase "is unlike" can be used to describe something that is different from another thing. However, there are several synonyms that can be used in its place, depending on the context. For example, instead of saying "is unlike," you could say "differs from," "contrasts with," "varies from," "diverges from," or "deviates from." These synonyms help to provide variety in language and can help to avoid redundancy. Additionally, they may be more specific in their meaning and can help to create a more vivid and precise description. Therefore, it is important to consider the context and intended meaning when choosing a synonym for "is unlike".