Just a heads up that I've created [[RuneScape:Spell check dictionary]]. It includes instructions on how to import a dictionary filled with terms from the game and other words not recognised by default dictionaries (e.g. "wyrm").
I'm not familiar with every browser and every OS, so I'm relying on those who are to provide the necessary instructions.
More terms are welcome and encouraged, just try to keep things in alphabetical order. MolMan 15:12, June 9, 2016 (UTC)