The only reason I ask is because more often than not, little things like scat, female and infantilism (which is apparently a thing... the more you know) are always slipping past my blacklist. It's rather annoying to combat it since some tags aren't as widely-known by uploaders as they should be.

That, and because most new users prefer not to read the wikis on uploading and tagging. Been there, done that. _{^{And still kind of doing it...}}

So the question is,

What are some undertagged things you come across as a tag editor?