factitious

cultured, manufactured, process

unauthentic

adulterated, designer, doctored, engineered, fudged, juggled, manipulated, tampered (with)

concocted, fabricated

counterfeit, deceptive, forged, fraudulent, misleading, phony (also phoney)

affected, brummagem, feigned, pinchbeck, pseudo, spurious

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, studied