prescriptive

/prəˈskrɪptɪv/
adjective
  1. Giving rules or instructions about how something should be done, rather than simply describing how it is done.
    • The new policy is less prescriptive and allows employees more freedom to choose their own methods.
    • Some teachers take a prescriptive approach to grammar, insisting on strict rules.
    • The manual is very prescriptive, telling you exactly which button to press at each step.
  2. Relating to the idea that language should follow fixed rules of correctness, rather than how people actually use it.
    • Many linguists criticize prescriptive grammar rules for ignoring how language naturally changes.
    • The textbook takes a prescriptive stance, telling students never to split infinitives.
    • His prescriptive view of English makes him correct people's grammar constantly.
What does "prescriptive" mean? | whatsthatwordmean | whatsthatwordmean