seriositude

Etymology
From, with the spelling changed to suggest a faux-Latin derivation.

Noun

 * 1)  Seriousness, especially self-seriousness.
 * 2) * 2008, September 11. "Caprious Deities", VCR Reporter.com.
 * I would argue that their best films are Fargo and Barton Fink, the two that straddle comedy and seriositude most ambiguously.
 * 1) * 2015, March 10. John Cole, "Hill's Presser", Balloon-juice.com. Comment by user "Bystander":
 * I think when you're refuting accusations of wrongdoing, seriositude is the way to go.