affected, artificial, assumed, bogus, contrived, factitious, fake, false, feigned, forced, mechanical, mock, phony(also phoney), plastic, pretended, put-on, sham, simulated, spurious, strained, unnatural

automatic, canned, concocted, fabricated, hokey, labored, manufactured, pat, unauthentic, unreal, unrealisticdouble-dealing, empty, facile, hollow, hypocritical, insincere, left-handed, mealy, mealymouthed, two-faced, unctuousexaggerated, histrionic, melodramatic, overacted, overdone, theatrical(also theatric)cute, cutesy, genteel, goody-goody, mincing, overrefined, simperingconventional, formal, impersonal, inflexible, rigid, stiff, stylized, woodenartful, calculated, conscious, cultivated, deliberate, premeditated, studied