1. to treat someone or a group as unimportant or powerless; to push to the edge of society or a group
Usage: British spelling (American: marginalize); transitive verb
2. to reduce the importance or relevance of something; to make something seem less significant
Usage: British spelling (American: marginalize); transitive verb

Examples

• The policy marginalised low-income families by reducing access to public services.
• Women in the industry felt marginalised when they were excluded from leadership meetings.
• The government's decision to marginalise rural communities sparked widespread protest.
• Some critics argue that the media marginalises minority voices in political debates.
• Students with disabilities should not be marginalised in mainstream schools.
• The company marginalised the concerns of its workers by ignoring their safety complaints.