Of course we could work around that limitation, but for ease of use I suggest implementing one. Unless there is one already there and I missed it some how.

I'm on board with this!

All very well but would it be UK or US English. This site seems to cater to both sides of the pond.
I quite often adjust my words to cater for US gamers. I often put middle to avoid centre / center.

Why not both? Or at least have the option to ignore and or add words to the dictionary. I am American and I usually spell words as if I was across the pond. Such as "armour". By default that should be ok or again at the very least I could make it a word.