As a computer scientist, I ran into trouble recently with a piece of my game writing for a general audience, which had a few phrases like this:
For magic, each boost increments quantity.
The intention here was for "increment" to mean "adds one to", which is what it means in the technical field of computing. But I had some readers be confused by that, and I realize now that the English dictionary definition of "increment" doesn't say the same thing. E.g., the definition at dictionary.com.
Example of the feedback I received (from a fellow programmer):
I'm not sure exactly how much increments quantity means, unless Dan is nerdily assuming people will just read that as quantity++
Note that this question is distinguished from this related one, which asks for usage in a technical publication, and whose answer is "increment", which in my case readers have found to be unclear.
Am I overlooking any other single word in standard English which specifically means "to add one"?