What Is It?

Bullying (verb)- to use strength or intimidation against someone to do something they want or just because they can.
This is the internet's definition of the word. If you instead asked someone who has experience bullying what it is, they'll most likely say:
Bullying (verb)- a pointless understatement of being beaten down until you can't get up, getting your dignity taken from you, and losing your will to live. It's what makes you cry yourself to sleep and what you have to face when you wake up the next morning. It's what you call when people you know or don't know to go against you when you did nothing wrong, when you did nothing to them, when you are nothing. It's the cause that makes you accept the words people call you even when they aren't true at all, because they're right, they're always right. It's what makes you want to just end it all just for it to stop. 
Now this is life's definition of the word.