I cannot find where to add the word I'm trying to find the definition to

firefox is underlined in red so yes as a PC browser firefox is dead to me due to your crappy crappy spell check! I don't know what happened but I'm done with you! I have never had this issue and I've been down since the days of netscape which is also inderlined in red which means this is a total piece of shit toodles dillholes!

There's no link to look up any words, and many of the words it underlines as incorrect are actually correct. It's obviously not working as it should.

Hi