If you have a mac you will know that what comes with it is the default dictionary, something I’ve always loved. This was not so with the iPhone/iPad and iOS devices, or that’s what I thought anyway. Perhaps you already know this workaround or perhaps you have been living under a rock for a while like me.
Anyway here goes, open the default note app on your iOS device and write a word, I have used the word dictionary as I thought it appropriate. Highlight and select the word.
The next time you define a word it will appear automatically. On the mac with a workaround I was able to add an English-Italian dictionary, I don’t see that being the case here, although I haven’t looked around much. If there’s anyone out there who does, give me a shout!