You can disable your account by following these steps:

1. Log in to gravatar.com
2. Click your email address in the top right corner and click on “Disable my Gravatar“.
3. Read the notice and confirm the action by clicking on Disable Account.

Disabling your account hides all your Gravatar data and removes access to Gravatar’s settings. You can re-enable your account at any time.

If you wish to permanently close your account, you can do so by closing your WordPress.com account.