I challenged a person the other day who replied to something I wrote pointing out that a word I used was not a word.

I asked him "Says who?" "Or did you maybe look it up in a dictionary?" then I pointed out that this makes it an appeal to authority.

I asked him if he knew what my "not word meant" as it was pretty clear.

I told him the purposed of communication is to transmit and share thoughts so if he understood what I was writing then it likely was a word. :) Whether it shows up in a dictionary or not is irrelevant.