The story
From non- + naturalism.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The metaethical view that (i) ethical sentences express propositions; (ii) some such propositions are true; (iii) those propositions are made true by objective features of the world, independent of human opinion; and (iv) these moral features of the world are not reducible to any set of non-moral features. Full definition →
From non- + naturalism.
Etymology from Wiktionary, CC BY-SA 4.0.