By the way, here's my own example of "cheap", following Andrew Tobias's definition.
Back when I was with a megacorp, once a group of us went out for lunch on Friday. We all ordered different plates. At the end of the meal, we each tossed in what should be our fair share. As my dish was something less than $12, and I only had water to drink, I put in $20 and thought that would be quite generous. A friend sitting next to me did the same thing.
To our surprise, the guy at the end of the table whose task was to count the money, making sure there was enough for taxes and tips, announced that we were short!!!
Somebody was being CHEAP!!!
Later my friend told me that he observed that another guy only put in the same $20, but he had a more expensive dish, with drink, and dessert and coffee!
Now, that very same guy, at another time, tried to impress us by saying that when not finishing up a bottle of wine, he would put on a fancy bottle stopper with nitrogen injection, yet could always tell that the wine deteriorated when he drank it later. Ha!
I thought to myself that "You are CHEAP, buddy, no matter how exquisite a taste you claim to have". But I kept it to myself and simply replied that I had never tried that kind of nitrogen preservation, that my bottles were usually too cheap for me to do that, and that I usually drank them up each meal anyway.