Synonyms for Ersatz:

adj.

all (adjective)
substitute.
artificial (adjective)
imitation, bogus, false, fake, synthetic, substitute, manufactured, counterfeit.
pretentious (adjective)
counterfeit, synthetic, overdone, facade, imitation, forged, imposture, stagy, posing, bogus, showy, Impersonating, la-di-da, artificial, forced, fake, stiff, affected, mock, false, ostentatious, stilted, theatrical, fraudulent, histrionic, unnatural, deceitful, studied, Masquerading, pretentious, mannered.
similar (adjective)
like, akin, Resembling, semblance, comparable, similar, alike, twin, close, analogous, imitative, uniform, such.

n.

disingenuous, sugary, hollow, insincere. in place of, copy, simulation, pinchbeck, rather than, on someone's behalf, for a change, instead. artificial (noun)
study at artificial, manufactured.
ersatz (noun)
artificial, unreal, imitation, substitute.

Other synonyms:

simulation, instead. pinchbeck. copy. Other relevant words:
disingenuous, insincere, manufactured, copy, hollow, sugary, pinchbeck, instead, substitute, unreal, simulation.