Galaxy S6 Edge :: Way To Clear ALL Learned Words In One Shot

Whenever I write a text message, the predictive process always suggests learned words as I begin typing a word. In my case, it is suggesting every e-mail address that my gmail has ever received an e-mail from, that has been CC'd on an e-mail I have received, or that I have sent an e-mail to.

I am looking for a way to clear ALL learned words in one shot. I know I can do it one at a time when the learned word appears, but that will take forever. There should be a way to clear all of the learned words out of my Samsung S6 Edge plus. Further, not all of the learned words even clear when I clear them individually.