What does "unnaturalism" mean?

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

What is a synonym for "unnaturalism"?

Common synonyms include: aberration, anomaly, derangement, deviation, difference, divergence.

noun

noun ·Rare ·Advanced level

Noun

1
Any behaviour, manner or style that runs contrary to nature. countable, uncountable

From unnatural + -ism.