The Collaborative International Dictionary of English v.0.48:

normative \normative\ adj.
   1. relating to or dealing with norms; as, normative
      discipline; normative samples.
      [WordNet 1.5]

   2. (Grammar) giving directives or rules; prescriptive.
      Opposed to descriptive.

   Syn: prescriptive.
        [WordNet 1.5]

   3. based on or prescribing a norm or standard; as, normative
      grammar.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

normative
    adj 1: relating to or dealing with norms; "normative
           discipline"; "normative samples"
    2: pertaining to giving directives or rules; "prescriptive
       grammar is concerned with norms of or rules for correct
       usage" [syn: prescriptive, normative] [ant:
       descriptive]

Moby Thesaurus II by Grady Ward, 1.0:

44 Moby Thesaurus words for "normative":
   according to Hoyle, accustomed, appropriate, average, common,
   commonplace, condign, conventional, correct, current, customary,
   decent, decorous, due, everyday, familiar, fit, fitting, good,
   habitual, household, kosher, nice, normal, ordinary, popular,
   predominating, prescriptive, prevailing, proper, regular,
   regulation, right, right and proper, righteous, rightful, seemly,
   standard, stock, suitable, universal, usual, vernacular, wonted