1 example sentence using erroneousness.
Erroneousness used in a sentence
Erroneousness in a sentence as a noun
Now if CyclOp had presented actual support for their claim, or the erroneousness of Saagar's comment just responding with "Saagar knows more than you" would be BS, but that isn't what happened here. In honesty, I'd also consider lapcat an authority on Mac and iOS dev as well.
Erroneousness definitions
noun
inadvertent incorrectness
See also: error