Definitions by J.T.C.

Specious 

1a. In fact correct, but has achieved that truth without proper substance or reasoning.
1b. Is in substance truthful, but that truth is fallacious due to the fact that the finding of the truth was drawn from a facetiously precarious idea.
2. Deceptive, but fatally attractive.
3. No longer useful: Obsolete, but attractive.

Dr Jon: "The Black widow is specious. It is of the most exquisite & enticing spiders that exists; though deathly poison, fit for a king, it does contain."

Specious by J.T.C. January 5, 2009