There are a number of synonyms for the phrase "separated from," depending on the context and the level of formality needed. For instance, we could use "divorced from" or "split from" in the case of a romantic relationship that has ended. Alternatively, we might use "isolated from" or "cut off from" to describe someone who has been intentionally distanced from a group or community. In more general terms, we might also use "detached from," "distant from," or "removed from" to describe a situation in which someone is no longer connected to something or someone else. Ultimately, the best synonym to use will depend on the specific context and the intended meaning of the phrase.