How to safely remove pages from Google index?

is there any way?

[ichthyous]

I recently installed a module on my site that generates pages based on keywords I code into my images. Each word becomes a link and links to a page which shows all the images related to that keyword...similar to flikr tags. I enabled the module for one day and found problems with it, and also noticed my site slowed down somewhat. I was shocked to see a bit later in webmaster tools that google now reports almost 8,000 missing pages from my site! Googlebot must have been indexing furiously and that's why the site slowed down. I am worried that such a high number of missing pages will get my site penalized...is there any way to tell google to remove them permanently from the index?

[SEOPTI]

Get a fresh domain, this is a safe way.

[ichthyous]

Get a fresh domain? Uh ok...is that how you deal with all the problems on your sites? I looked it up on WebmasterWorld and just added disallows for these directories in robots.txt. I knew this already but had forgotten it.

[Silvery]

Your disallows in robots.txt are one good way to deal with it. Another is to place a robots META tag in your page headers with NOINDEX parameter in them.

[Achernar]

If you have a valid robots.txt file, and it's not using any wildcard in the rules, you can use google's removal tool here : [services.google.com...]