1. making something crude, coarse, or lacking in refinement
Usage: British spelling; present participle
2. making something accessible to ordinary people, often by simplifying it
Usage: British spelling; present participle

Examples

• The critics accused the museum of vulgarising classical art with its flashy displays.
• She worried that vulgarising the complex theory would lose its essential meaning.
• The publisher was vulgarising literature by adding sensational covers to classic novels.
• He believed the media was vulgarising political discourse.
• The restaurant was vulgarising fine dining by serving it in plastic containers.
• They were vulgarising the ancient ritual by turning it into a tourist attraction.