Here are some antonyms for assimilation, depending on the context:
General:
* Separation: This refers to a lack of integration or blending.
* Isolation: This implies a state of being alone or apart.
* Differentiation: This emphasizes the distinctness of individuals or groups.
* Exclusion: This suggests being kept out or barred from participating.
Cultural context:
* Preservation: This focuses on maintaining cultural traditions and identities.
* Resistance: This implies actively opposing assimilation efforts.
* Autonomy: This refers to the ability to self-govern and maintain cultural independence.
* Multiculturalism: This promotes the coexistence of different cultures within a society.
Biological context:
* Divergence: This refers to the process of becoming more different over time.
* Mutation: This involves a change in genetic material, leading to variation.
* Differentiation: This describes the process of cells becoming specialized.
To provide a more specific antonym, please clarify the context in which you're using the word "assimilation."