Simulation, n.
Etymology: [F. simulation, L. simulatio.]
The act of simulating, or assuming an appearance which is feigned, or not true; -- distinguished from dissimulation, which disguises or conceals what is true.
Syn. -- Counterfeiting; feint; pretense.
Shades of meaning
Fernald has no entry of its own for simulation; he lists it under pretense.
He lists it without comment; the entries above explain its neighbors.