function titleRestrictionFilter($title){ global $post; $title = $post->post_title; $restrictedWord = "forbidden"; if (stristr( $title, $restrictedWord)) wp_die( __('Error: This title is containing restricted word') ); } add_action('publish_post', 'titleRestrictionFilter');
![](https://i0.wp.com/arjunphp.com/wp-content/uploads/2023/11/wordpress-restrict-a-specific-word-from-post-title_1880.jpg?fit=800%2C400&ssl=1)