noun
Refers to an ideology or attitude that seeks to exclude certain groups, ideas, or influences. Often used in political, social, or religious contexts.
その政党の排除主義的な政策は批判を浴びた。
The party's exclusionist policies drew criticism.
排除主義は多様性を認めない考え方だ。
Exclusionism is a way of thinking that does not accept diversity.
Compound of 排除 (exclusion) + 主義 (principle, -ism). The exact historical derivation is uncertain, but it follows the standard pattern for forming ideological terms in modern Japanese.