When Siri works, it’s obviously really awesome. The one really cool thing about Siri is that it remembers relationships with your other contacts. How? Just tell it!

Setting up a relationship

Tell Siri “Kyle is my brother” and it’ll set up the relationship for you. You’ll obviously want to replace Kyle with your contact’s name and brother with your relationship to this contact.

Removing that relationship

I couldn’t find a way for Siri to forget the relationship, but there’s a way you can do it yourself. In the Contacts app on your phone, find the contact card Siri is using for you, scroll until you see the relationship you want to forget and delete it.