Synonyms for the phrase "separate oneself from" include alienate, disassociate, distance oneself, detach, sever ties, and isolate oneself. The term "alienate" suggests a deliberate act of creating distance or hostility between oneself and others, while "Disassociate" implies a loss of connection or identification with a particular group or individual. "Distance oneself" and "detach" both convey a sense of putting space between oneself and others, while "sever ties" denotes a more extreme and definitive separation. Lastly, to "isolate oneself" is to remove oneself completely from others or society, often due to health, safety, or personal reasons. All of these synonyms imply a desire or need for separation from others.