'prescriptivist' definitions:

Definition of 'prescriptivist'

From: GCIDE

prescriptivist \pre*scrip"tiv*ist\, n. A person who believes that acceptable practices should be prescribed by an authority rather than be determined by the usage of the general public; especially, a supporter of prescriptive[2] rules of grammar; -- also used attributively, as prescriptivist grammar. [PJC]