spurious

1 being such in appearance only and made or manufactured with the intention of committing fraud a spurious Picasso painting that wouldn't have fooled an art expert for a second Synonyms bogus, fake, false, forged, inauthentic, phony (also phoney), queer, sham, snide, counterfeit, unauthenticRelated Words artificial, factitious, imitation, man-made, mimic, mock, simulated, substitute, synthetic; dummy, nonfunctioning, ornamental; cultured, fabricated, manufactured; deceptive, delusive, misleadingNear Antonyms natural; actual, true, validAntonyms authentic, bona fide, genuine, real, unfaked

2 lacking in natural or spontaneous quality claimed that the governor's election-year enthusiasm for conservation was spurious, since he had cut funding for state parks Synonyms affected, assumed, bogus, contrived, factitious, fake, false, feigned, forced, mechanical, mock, phony (also phoney), plastic, pretended, pseudo, put-on, sham, simulated, artificial, strained, unnaturalRelated Words automatic, canned, concocted, fabricated, hokey, labored, manufactured, pat, unauthentic, unreal, unrealistic; double-dealing, empty, facile, hollow, hypocritical, insincere, left-handed, mealy, mealymouthed, two-faced, unctuous; exaggerated, histrionic, melodramatic, overacted, overdone, theatrical (also theatric); cute, cutesy, genteel, goody-goody, mincing, overrefined, simpering; conventional, formal, impersonal, inflexible, rigid, stiff, stylized, wooden; artful, calculated, conscious, cultivated, deliberate, premeditated, studiedNear Antonyms authentic, bona fide, real, realistic, right, true; honest, ingenuous, sincere, unpretending; easy, effortless, smooth; extemporaneous, impromptu, impulsive, instinctive, unconscious, unprompted, unrehearsed, unstudiedAntonyms artless, genuine, natural, spontaneous, unaffected, uncontrived, unfeigned, unforced

3 born to a father and mother who are not married 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, bastard, misbegotten, natural, illegitimate, supposititious, unfatheredRelated Words fatherless, motherless; nameless; adopted, orphanedAntonyms legitimate