Pl. Specious actions, promises, ideologies, etc.(noun)
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Use "speciosity" in a sentence
"It is observed in similitude, inasmuch as it forms the ground of species or form, and so is called speciosity, because beauty is nothing but numerical equality, or a certain disposition of parts accompanied with sweetness of color."
"It is unfortunate, for when Anna is stirred by the sight of him and his all-conquering speciosity, any reader is sure to protest."
"To examine whether or not an association exists between the conservation status of species within genera and their position in Darwin's manufactory schema, all the world's bird genera were divided into four groups based on their speciosity and the richness of their subspecies."