prescriptive linguistics has no recorded synonym. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is descriptive linguistics.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an account of how a language should be used instead of how it is actually used; a prescription for the `correct' phonology and morphology and syntax and semantics
Synonyms, antonyms and the broader and narrower relations for prescriptive linguistics come from Princeton University’s WordNet. Full sources and licences.