IF you google it, it says the origin of the word is “full+some” meaning abundant. I know my Gramps always used the word when he had an excellent crop for the year & he always said that he had a “fulsome harvest” indicating he had an abundant crop that would feed us all winter. My Gramps wasn’t that much older than Flakes.
I have NO doubt that Flakes doesn’t know how he’s using the word; but, I don’t see him that far off base either. He’s wanting an abundant investigation that will lead to the TRUTH before he can make up his mind!!! Since he seems to be the ONLY Republican listening to what is being said, I’m find it difficult to say he’s wrong!!!