You could try going into settings>language and input and clicking on the settings for the keyboard ( 3sliders on the right). There is an option to unclick Word recollection. Not sure if that is what you want.
Do you mean word reselection, I don't have recollection button to unclick. Do you mean the under word suggestion settings. unfortunately, the word is still there.
Thanks for replying.
There is an option for "Personal dictionary", where you can add and remove words, but I think you're asking about the system's words, not your own. I couldn't find any way to delete the keyboard's built-in words.