noun. The state or quality of being specious; plausible appearance; fair external show: as, the speciousness of an argument.

noun. The state or quality of being specious.

noun. The result or product of being specious.

noun. an appearance of truth that is false or deceptive; seeming plausibility

"The passage, as it proceeds, is not without an air of speciousness, which is yet, as it appears to us, only derived from a perversion of the assumption against which it is directed."

deceptiveness  obliquity  

!xabbu  artfulness  astrophysicist  breeching  chicane  

acting  affectation  apparent character  apparent soundness  appearance