insecurity

Feeling insecure, simply translates to feeling inferior, it may be because of a physical attribute or an intellectual one. But everyone has them right? You already know that everyone has flaws, and no one is perfect, still you can not get yourself out of this bind? Why? Because it's not they who are looking down at you, rather, it's you who is looking upto them. Most of the times, it's not they who have superiority complex, rather it's you, who has inferiority complex.

So, if you're insecure that someone is more smarter than you, that means you don't consider yourself that smart.