1. to remove someone from one's list of friends on a social media platform
Usage: informal; chiefly used in the context of social networking sites such as Facebook

Examples

• She decided to defriend her ex-boyfriend after their breakup.
• I defriended several people who kept posting offensive content.
• He was hurt when he realized his former best friend had defriended him.
• Many users defriend accounts that spam their feeds with advertisements.
• After the argument, they defriended each other on all social media platforms.
• I'm going to defriend anyone who doesn't respect my privacy settings.