To delete a suggestion from a topic, it's as easy as clicking the "trash can" at the top-right of the content card.
If you find yourself deleting a lot of suggestions, you can narrow your results by filtering by source (excluding, or isolating) or by editing your topic to exclude troublesome keywords.
Please reach out to us to help you get your search criteria just right.
To delete multiple suggestions without having to confirm with the pop-up each time, you can hold down the "alt/option" key while you do so.