1620s, "feigned," past-participle adjective from simulate (v.). Meaning "imitative for purposes of experiment or training" is from 1966 (agent noun simulator in the related sense dates from 1947; also see simulation). In commercial jargon, "artificial, imitation" by 1942.
a purse of simulated alligator hide
under simulated combat conditions
simplistic
simply
simulacrum
simular
simulate
simulated
simulation
simulator
simulcast
simultaneity
simultaneous