Word: artificial-

synthetic, fake, imitation, mock, ersatz, faux, substitute, replica, reproduction, man-made, manufactured, fabricated, inorganic, plastic, pretend, phony, insincere, feigned, false, unnatural, contrived, put-on, exaggerated, forced, labored, strained, hollow, bogus, hokey, stilted, unreal

adjective

• made or produced by human beings rather than occurring naturally, typically as a copy of something natural.
• (of a person or a person's behavior) insincere or affected.