Originated 1426–75 from Middle English speciosity (attractive), from Latin speciōsitās (beauty), from speciēs (appearance), + English -ity (noun-forming suffix).


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;


  • speciosity” in The American Heritage Dictionary of the English Language, Fourth Edition, Houghton Mifflin Company, 2000.
  • speciosity” in Unabridged:, LLC, 1995–.
  • "speciosity" in the Webster's Revised Unabridged Dictionary, MICRA, 1996, 1998.