naturalisticPronunciation: /natʃ(ə)rəˈlɪstɪk/Definition of naturalistic adjective 1derived from or closely imitating real life or nature:a naturalistic rock garden 2based on the theory of naturalism in art or literature:naturalistic paintings of the city of or according to the philosophy of naturalism: phenomena once considered supernatural have yielded to naturalistic explanationDerivatives naturalistically adverb naturalistic in other Oxford dictionaries Definition of naturalistic in the US English dictionary