English

Noun

speciosity ‎(plural speciosities)

1. (uncountable) The state or quality of being specious.
2. (countable, rare) pl. Specious actions, promises, ideologies, etc.
   • 1843, Thomas Carlyle, Past and Present, book 2, ch. 8, The Electon

     Till deep misery, if nothing softer will, have driven you out of your Speciosites into your Sincerities; and you find there either is a Godlike in the world, or else ye are an unintelligible madness;

References

• “speciosity” in The American Heritage Dictionary of the English Language, Fourth Edition, Houghton Mifflin Company, 2000.
• “speciosity” in Dictionary.com Unabridged, v1.0.1, Lexico Publishing Group, 2006.
• "speciosity" in the Webster's Revised Unabridged Dictionary, MICRA, 1996, 1998.