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1. Lacking authenticity or validity in essence or origin; not genuine: spurious poems attributed to Shakespeare.
2. Not trustworthy; dubious or fallacious: spurious reasoning; a spurious justification.
3. Archaic Born to unwed parents.
[From Late Latin spurius, from Latin, illegitimate, probably of Etruscan origin.]
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|Noun||1.||spuriousness - state of lacking genuineness|
falseness, falsity - the state of being false or untrue; "argument could not determine its truth or falsity"
genuineness - the state of being genuine