Sin!
A simple word, isn't it? 'Paap' in hindi.
Well, what does it mean? If we think about it for a moment. We are suddenly caught off-guard. When i posed this questions to a few people, the reaction was quite late and when it did come it was sort of inhibited. The general consensus was doing anything with the knowledge that it is wrong results in sin. So, what is sin to one might not be a sin to the other. I might do something 'wrong' without knowledge. So i have not sinned. Also if in my knowledge the thing is not wrong, I haven't sinned. But shouldn't sin be something more definite. Like adultery should be a sin for everybody. Stealing, taking that which is not yours by right, should be a sin. Whether in my mind i accept it as wrong or not, it should be a sin.
Here are a few attempts at defining sin.
Sin - The breaking of one of the Ten Commandments of the Old Testament of the Bible, but later included any non-adherence to the teachings of the Christian Churches. (What was a sin for one was not, necessarily, a sin for the other.)