(transitive, rare) To make unnatural.

present participle of unnaturalize

plural of unnaturalness

(uncountable) The condition of being unnatural. / (countable) Something that does not occur naturally.

plural of unnaturality

plural of unnaturalism

Any behaviour, manner or style that runs contrary to nature.

(evolutionary theory, rare, sometimes humorous or derogatory) The selection of certain genes caused by the actions of humans, especially the intentional intervention in the breeding of plants or animals in order to preserve selected genetic traits; eugenics, selective breeding or culling.