This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The property of being spurious.

n. Illegitimacy; the state of being bastard, or not of legitimate birth: as, spuriousness of issue.

n. The state or quality of being spurious, counterfeit, false, or not genuine: as, the spuriousness of drugs, of coin, or of writings.

n. state of lacking genuineness

"The first person to detect his spuriousness was a little child playing in the arched gateway of one of the walled buildings."

falseness    falsity   

inauthenticity    canonicalization    sacrificeis    calumniation    pint-pot