Things You'll Need
Instructions
Turn on your PlayStation 3. Access the XMB button by pressing the PS button (the round button) in the middle of your PS3 controller.
Press the left analog stick or left on the directional pad until you are under the "system settings" option. Press the "X" button to open the menu.
Scroll down to the "Delete predictive text dictionary" option. Press the "X" button to confirm the deletion.