The word "lowering", as in the context of lowering something, therefore making it lower in some measurable way, is pretty common.
It is so common that I often start sentences about doing the opposite, and get to the specific word, and it's completely blank. I have no idea what word could mean "making something higher according to some scale that is probably obvious in context".
What word would be good for this situation? I'm pretty sure "highering" is not valid.