How many times have you been called a "slut"? How many times have you called someone, or heard one of your friends call another girl, a "slut"?
I have heard the term thrown around quite frequently, however, most of the individuals us girls and boys are calling "sluts" are actually not. By definition, a slut is someone who has many casual sexual partners. Unless you are specifically involved with the individual you are referring to, I doubt you can truly know how many partners they have had. So, you are really basing your opinion on an assumption. Additionally, it is not any of your business anyways.
Typically, the word “slut” is used to describe a woman who dresses in a provocative manner, but a woman who chooses to dress provocatively is not the same as a "slut," so stop calling that girl something she is not. You are communicating to other people that she is something that she very well may not be. She may even be a very kind, likable individual, but my guess is you do not know her very well. Perhaps you should give her a chance before you go making assumptions.
My guess is your accusations stem from jealousy, anger or from the fact that you do not agree with her choices. Maybe you are basing your assumptions on her appearance alone or rumors you have heard. As already stated, you could not possibly, with 100 percent confidence, know how many partners the given individual has had, but that is really not the point. The point is it is none of your business. Who are you to judge whether she is a "slut" or not? It is not your business who she chooses to have intimate relationships with or the manner of those relationships. You do not determine what she is allowed to wear. Perhaps the outfit she is wearing makes her feel confident, strong and sexy — there is nothing wrong with wanting to feel that way. And as far as rumors go, they typically turn out to be untrue, so you should not believe everything you hear.
Perhaps you still do not agree with my view. I accept that, however, my aim is not to convince you that the girl you are shaming is not actually a "slut," although that would be a good take away. My point is that it is none of your business. You are not the almighty judge of this universe. You do not get to decide what is right and wrong for anyone besides yourself. The best thing for you to do is simply acknowledge that her choices are merely different than yours, and move on. There is no need to put the girl down. She may be a very nice, kindhearted individual, but you would never know that unless you got to know her.
Please think the next time you go to call that girl a slut. She is a human just like you. Ask yourself if you really know anything about her, but more importantly, consider if anyone will benefit from you labeling her as a “slut.” The answer is that no one will benefit from it. So accept your differences and focus on yourself.