I used to think that there were forbidden definitions too, but it's actually just a glitch in the website. They're actually on there, but for some reason hidden. You can unlock them by Exact Googling in your definition, then reading it Cached, but they still won't permanenty stay.

Words that never come up on Urbandictionary even if you have posted it about 5 times.

I guess it's when urban dictionary thinks' you are being too extreme when describing something. I know this is true because my retarded neighbor's definition, "Annie" never gets posted even after I've submitted it like 5 times already.

linkin park, adolf hitler as well as many male first names.

The worst idea this site has ever came up with. Some forbidden definitions are: