Hi Kosta and Ashley,
I just added a word to the dictionary using the container app. Honestly I found the process a little confusing.
After typing the desired word into the text field, it wasn't really clear what to do next.
Even after pressing the Done button in the bottom right, the new word stayed at the top of the screen, giving me the expectation that the process was not yet complete and I needed to find some kind of confirmation button. It was only when I moved away from the dictionary Tab, then back to it, that I found my new word to have dropped into place in the alphabetical list.
Now I know how it is ok, but I still think it could be a clearer process for people.