'Unnaturalness' definitions:

Definition of 'unnaturalness'

From: WordNet
noun
The quality of being unnatural or not based on natural principles [ant: naturalness]

Definition of 'Unnaturalness'

From: GCIDE
  • Unnatural \Un*nat"u*ral\ (?; 135), a. Not natural; contrary, or not conforming, to the order of nature; being without natural traits; as, unnatural crimes. [1913 Webster]
  • Syn: See Factitious. [1913 Webster] -- {Un*nat"u*ral*ly}, adv. -- {Un*nat"u*ral*ness}, n. [1913 Webster]