Definition of unnaturalist in English:

unnaturalist

Pronunciation /(ˌ)ʌnˈnatʃ(ə)rəlɪst/ /(ˌ)ʌnˈnatʃ(ə)r(ə)lɪst/

noun

  • A person who is not, or who is purported not to be, a naturalist.

Origin

Early 17th century (in an earlier sense).