1. causing someone to become hostile or opposed; provoking anger or resistance
Usage: present participle of antagonise (British spelling); American spelling is antagonizing
2. acting in opposition to; working against
Usage: less common usage

Examples

• His constant criticism was antagonising the entire team.
• She kept antagonising her colleagues by dismissing their ideas.
• The new policy is antagonising many employees who feel undervalued.
• Stop antagonising your sister or you'll both get in trouble.
• The politician's remarks were antagonising voters across the country.
• He had a habit of antagonising people without realizing it.