IPA: /əˌsɪməˈleɪʃənɪst/
KK: /əˌsɪməˈleɪʃənɪst/
A person who supports or promotes the idea of different cultures or groups becoming similar to a dominant culture, often by adopting its customs and values.
The assimilationist believed that immigrants should adopt the local culture to fit in better with society.
Assimilationist → It is formed from "assimilare" (meaning to make similar) and the suffix "-ist" (meaning a person who practices or is concerned with). The word refers to a person who advocates for or practices the process of making different groups similar or integrating them into a common culture.
Think of someone who is trying to 'make similar' ('assimilare') different cultures or groups — that's what an assimilationist does.