naturalism C2+

/ˈnætʃərəˌlɪzəm/ a style or doctrine depicting things as they really are in nature

naturalistic C2+

/ˌnætʃərəˈlɪstɪk/ imitating nature or real life closely; based on naturalism

unnaturally C2+

/ʌnˈnætʃərəli/ in a way that is not natural or normal