Great solution to hide WordPress widget title on the front end users but keep them for admin labelling.
Completely Control/Manage your WordPress Widgets Get Started
Hide WordPress widget title is an extra little Widget Options features but of great help for most of the users. For instance, you still want to keep the title to avoid admin confusion but you don’t need them to be shown on the front end because it’s kind of unnecessary; then this feature is for you. Easily hide the widget title by just checking the checkbox provided and you’ll be in total control.