i Register
In some senses, speciosity is marked as rare. Watch for register when choosing this word.
noun
The state or quality of being specious.
A specious action, promise, ideology, etc.
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;
noun
The state or quality of being speciose.
The circumstance that the proportion of taxa with 12 + 14 vertebrae increased in the lower categories is due to the speciosity of the Epinephelinae.
[David] Jablonski’s end-Cretaceous mollusc genera suffer extinction to an equal degree, irrespective of their speciosity, geographical spread or other extinctionproof insurance policies.