I had a set of 283 keywords banned for no evident reason. All of them - is it possible that all of them are deleted if some of them are adult but all of them are picked from Google suggestion tool?
Google will always give you a reason as to why any ads or keywords may have been disapproved. Check you e-mail. And note that, at the top of the Adwords Keyword Tool, it clearly states that . . . "We reserve the right to disapprove any keywords you add. You are responsible for the keywords that you select and for ensuring that your use of the keywords does not violate any applicable laws." You shouldn't assume, therefore, that your keywords will be permissible just because they were given by the Adwords Keyword Tool.
If it's adult, you're going down a narrow path in the first place. You could have a perfect set of keywords, but they find one thing they dont' like in your ad or on the landing page and they'll just disapprove everything.
Thanks for your comments, it never occured to me that I may check with the least explicit landing page. Though the are all pretty nice.
Try to look at the landing page from google's perspective though. It's hard to do because their perspective is so hard to figure out sometimes, but anything "iffy" and they'll just disapprove things.