Android :: Add A Word To Dictionary For Prediciton

My mind has just been blown. I consider myself a fairly careful and exploratory user of most things, and Android is no exception - I'd like to think of knowing most its functions, and when people make posts in this forum, I do tend to already know them. But no - my mind was just blown with something so simply that I'm sure i'm behind the curve here. It always annoyed me how difficult it was to add a word to the dictionary for prediciton? Or, not difficult, but time consuming, going into the settings, text and locale, diction, add. The other day I had a moment of brilliance when I realised that long-holding the text box after typing in a word brought up the option (right at the bottom of the list) to add it to the dictionary. This was faster, but still a bit annoying because it took a second to load the dictionary, then you had to click "Add" again. I just realised, however, that if you long-hold a word itself in the text entry box, it just adds it. It comes up saying "saved" and bam, it's done.