Stupidity and ignorance are the only things I can come up with.
Why ignorance though ? I really don't see why people feel ignorance is so negative. Everyone is ignorant in some field. Even people like Albert Einstein and Stephen Hawking are ignorant in their own way. How bad being ignorant is can only be relative to specific situations. Someone who is ignorant about cooking can get by just fine as an Engineer but take a chef who is ignorant in that field and put him in the same job and then it is a problem. Ignorance is simply the lack of knowledge, easily cured by experience or the teachings of another. But stupidity which can be defined as the inability to connect the information you have and use them to come to the correct conclusions is quite different and is a perfectly valid thing to look down upon.