To deactivate your Babylist account, you can follow the steps below. This will deactivate your entire account, not just the current registry list you're working on. If you'd like to only delete your current registry and start a new one, you can do so here.
Are you using a computer?
Click your name on the top right hand side of your registry to access the account drop down menu > Settings > Account Info. From there check "Deactivate Account," enter your password and hit Save. If you are logged in, click here to access the page directly.
Are you using the app?
Tap the menu bar in the upper left-hand corner. Tap Account > Deactivate Your Account.