i am guessing it is the act of being natural, this can be preformed by using your brains and not copying someone else, it can also be defined as a way for someone to hide them self from being...
well naturalism is related to things you do in the real world and non-naturalism does not relate to anything in the real world, and it is a bit more bizarre.
Non-naturalism is a way of portraying something that is unrealistic or not really there. It is when your performance is based on things out of the ordinary or what would not usually occur.