honorary
Given as a special honor, without the usual requirements.
Honorary describes a title, position, or degree given to honor someone rather than because they completed the usual requirements. When a university awards someone an honorary doctorate, they're recognizing that person's achievements and contributions without requiring them to attend classes or write a dissertation.
Schools sometimes make beloved teachers honorary members of graduating classes. Cities name people honorary citizens to celebrate their service or connection to the community. Your little sister might declare herself the honorary captain of your backyard soccer team, even though she's too young to play, because everyone loves having her around.
An honorary position often comes with privileges like attending special events or being listed officially, but usually not with the regular duties or pay. When someone receives an honorary title, it's a way of saying “we respect what you've done and want you to be part of our group,” even if the typical path to that position doesn't quite fit.
You might also hear someone called an honorary member of a family when they're so close and loyal that they feel like real family, even without the biological connection.