Also found in: Legal.
profit by (something)
1. Literally, to make money from something. I promise, you'll profit by this business venture. There are stacks of bills in your future.
2. To learn from some experience. Well, as long as you profit by this error, then it's not so bad, right?
profit by somethingand profit from something
1. Lit. to gain money from something. You will surely profit by investing in this stock. I know I will profit from this investment.
2. Fig. to learn from something. I am sure you will profit by your unpleasant experience. Yes, I will profit from my failure.