Here’s an idea for word processors and spell checkers. They already underline words in red that they don’t find in their dictionary.
How about if obscure words were underlined in yellow? For instance, I have a habit of typing “manger” instead of “manager” when I’m typing too fast. The word “manger” is probably not used much except around Christmas. It’d be nice if it were flagged in yellow and I could right-click to get a list of more common words with a similar spelling.
Have any spell checkers already implemented something like this? Let me know if you’ve seen it anywhere.