pretend, copy, imitate
A simulacrum is an image or representation of something that can be a true copy or may just have a vague similarity to it.
When people dissimulate, they hide, conceal, or disguise their true intentions or feelings.
the act of deceiving
reproduce someone's behavior or looks
the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)
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