Meaning

1 senses
  1. (Internet, humorous, uncountable)Seriousness, especially self-seriousness.

    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.

Origin

Pseudo-Latinism, derived from serious + -itude, with the spelling changed to suggest a pse

Pseudo-Latinism, derived from serious + -itude, with the spelling changed to suggest a pseudo-Latin derivation.

Wiktionary, CC BY-SA 4.0 · source

See also

neighbours in the dictionary
seriositude — meaning, examples, forms, synonyms | Krumeto