unnature

From un- +‎ nature.

unnature (third-person singular simple present unnatures, present participle unnaturing, simple past and past participle unnatured)

1. (obsolete, transitive) To change the nature of; to invest with a different or contrary nature.
   • a. 1587, Philippe Sidnei [i.e., Philip Sidney], “(please specify the folio)”, in [Fulke Greville; Matthew Gwinne; John Florio], editors, The Countesse of Pembrokes Arcadia [The New Arcadia], London: […] [John Windet] for William Ponsonbie, published 1590, →OCLC:

     A right heavenly nature, indeed, as it were unnaturing them, doth so bridle them [the elements].

unnature (uncountable)

1. That which is contrary to nature; the unnatural.
   • 1858, Horace Bushnell, Nature and the Supernatural:

     So as to be rather unnature, after all, than nature.