Gravity Perks Blocklist

Gravity Perks Blocklist plugin allows you to validate a field’s value against the WordPress Disallowed Comment Keys validation. This option can be set for a single field, multiple fields, all fields within a form. If the field fails validation it will display an error to the end user stating that their field contains disallowed words. You need to installGravity Perksalong with Gravity Forms plugin in order to use this plugin.