naturalism
noun
[ ˈnatʃ(ə)rəlɪz(ə)m ]
• (in art and literature) a style and theory of representation based on the accurate depiction of detail.
• "his attack on naturalism in TV drama"
• the philosophical belief that everything arises from natural properties and causes, and supernatural or spiritual explanations are excluded or discounted.
• "this romanticized attitude to the world did conflict with his avowed naturalism"