I agree with JohnnyPhotoshop. Why is there not an option to hide rejected images. SIMPLE HIDE THE REJECTS. Should not require ten people to answer this question.
"Using the filter bar right above the filmstrip at the bottom, you can choose to show any combination of rated, unrated, rejected. In your case, you choose rated and unrated (click on each until it is highlighted). Then do X as you suggest. Then you unclick rated and unrated, and only click/select rejected. As soon as you change any one of them to rated or unrated it will disappear from your filtered selection of rejects. Then you can select all the rejects and delete them.
If this filtering option does not show up on that bar, start by clicking next to "Custom Filter" and choose ratings to show up."
Really? how about "hide rejects" two words one mouse click. no BS. I know that some ppl will say oh there's a learning curve. That is not an excuse to me for this kind of complication. Filter "hide rejects" is not an option. please refer to the ten step process above. Grrr