spurious

adj.

[1]	false , specious , counterfeit , sham , fake , fraudulent , bogus , mock , imitation , simulated , unauthentic , ungenuine , forged , feigned , pretended , deceitful , meretricious , contrived , factitious , artificial , ersatz , synthetic , (Colloq) pseudo , phoney/(US) phony
[2]	bastardly , misbegot , misbegotten
[3]	inauthentic , unauthentic