To silence someone on Snapchat, follow these steps: 1. Open the Snapchat app and go to your Friends list. 2. Find the person you want to silence and tap on their name or Bitmoji to open their contact page. 3. On their contact page, look for the three-dotted menu icon located at the top. 4. Tap on the menu icon to reveal a list of options and select "Message Notifications." 5. From the Message Notifications menu, choose the "Silent" option. By enabling the Silent mode for that contact, you will no longer receive notifications for their snaps and chats. However, you can still open and view their content at your convenience, without them being aware that you have silenced their notifications.