" spuriousness "

1: the state or fact of being born out of wedlock;

  * e.g., " ... the spuriousness of her birth had always bothered her "

•  Synonyms : 

•  bar sinister,

•  bastardy,

•  illegitimacy

•  Antonyms : 

•  legitimacy

1: being such in appearance only and made or manufactured with the intention of committing fraud;

  * e.g., " ... a spurious Picasso painting that wouldn't have fooled an art expert for a second "

•  Synonyms : 

•  bogus,

•  counterfeit,

•  fake,

•  false,

•  forged,

•  inauthentic,

•  phony,

•  sham,

•  snide,

•  unauthentic

•  Antonyms : 

•  authentic,

•  bona fide,

•  genuine,

•  real,

•  unfaked

2: lacking in natural or spontaneous quality;

  * e.g., " ... claimed that the governor's election-year enthusiasm for conservation was spurious, since he had cut funding for state parks "

•  Synonyms : 

•  affected,

•  artificial,

•  assumed,

•  bogus,

•  contrived,

•  factitious,

•  fake,

•  false,

•  feigned,

•  forced,

•  mechanical,

•  mock,

•  phony,

•  plastic,

•  pretended,

•  pseudo,

•  put-on,

•  sham,

•  simulated,

•  strained,

•  unnatural

•  Antonyms : 

•  artless,

•  genuine,

•  natural,

•  spontaneous,

•  unaffected,

•  uncontrived,

•  unfeigned,

•  unforced

3: born to a father and mother who are not married;

  * e.g., " ... the spurious son of Charles II, the Duke of Monmouth would later mount a rebellion in a disastrous attempt to claim the throne "

•  Synonyms : 

•  baseborn,

•  illegitimate,

•  misbegotten,

•  natural,

•  supposititious,

•  unfathered

•  Antonyms : 

•  legitimate