The phrase "intellectual superiority" means having a higher level of intelligence or knowledge than others. It is when someone is considered smarter or more knowledgeable than the people around them. Full definition
There is no occasion to explain it by reference to an alleged Jewish intellectual superiority. (fortune.com)
The downside of a lot of atheists / agnostics is that most of them believe that this gives them some kind of intellectual superiority over believers. (religion.blogs.cnn.com)
I guess i'm just a bit stunned, seeing as how so many atheist posts were claiming intellectual superiority until this article. (religion.blogs.cnn.com)