Antonyms for the word "most assimilated" could include "least integrated," "most isolated," "least acculturated," "most foreign," "least adapted," or "most distinct." These words describe the opposite of assimilation, in which individuals or groups blend into a dominant culture or society. Instead, they suggest a lack of integration or belonging, marked by cultural differences or an inability to adapt to a new environment. While assimilation has been a goal for many immigrants throughout history, some individuals or groups may resist assimilation in favor of preserving their own cultural identity or resisting dominant cultural norms.